McCulloch Chainsaw 115377027 User Manual

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Instruction Manual  
Manual de Instrucciones  
Manuel d’Instructions  
For Occasional Use Only  
WARNING:  
Read and follow all Safety Rules andOperating Instructionsbefore  
using this product. Failure to do so can result in serious injury.  
ADVERTENCIA:  
Lea el manual de instrucciones y siga todas las advertencias  
e instrucciones de seguridad. El no hacerlo puede resultar en  
lesiones graves.  
AVERTISSEMENT:  
Lire le manuel d’instructions et bien respecter tous les avertisse-  
ments et toutes les instructions de sécurité. Tout défaut de le faire  
pourrait entraîner des blessures graves.  
McCulloch  
9335 Harris Corners  
Charlotte, NC 28269  
McCulloch  
850 Matheson Blvd. West  
Mississauga, Ontario L5V 0B4  
115377027 Rev. 1 5/1/10 BRW  
 
MAINTAIN YOUR SAW IN GOOD  
Safety Hat  
Hearing  
WORKING ORDER  
Protection  
Eye  
S Have all chain saw service performed by a  
qualified service dealer with the exception  
of the items listed in the maintenance sec-  
tion of this manual. For example, if improp-  
er tools are used to remove or hold the fly-  
wheelwhen servicingthe clutch, structural  
damage to the flywheel can occur and  
cause the flywheel to burst.  
otection  
Snug Fitti
Clothing  
Heavy Duty  
Gloves  
S Make certain the saw chain stops moving  
when the throttle trigger is released. For  
correction, refer to CARBURETOR AD-  
JUSTMENT.  
ty Chaps  
Safety Sh
S Never modify your saw in any way.  
S Keep the handles dry, clean, and free of oil  
or fuel mixture.  
S Keep all parts of your body away from the  
chain when the engine is running.  
S Keep children, bystanders, and animals a  
minimum of 30 feet (10 meters) away from  
the work area. Do not allow other people  
or animals to be near the chain saw when  
starting or operating the chain saw.  
S Do not handle or operate a chain saw when  
you are fatigued, ill, or upset, or if you have  
taken alcohol, drugs, or medication. You  
must be in good physical condition and men-  
tally alert. Chain saw work is strenuous. If  
you have any condition that might be aggra-  
vated by strenuous work, check with your  
doctor before operating a chain saw.  
S Carefully plan your sawingoperation inad-  
vance. Do not start cutting until you havea  
clear work area, secure footing, and, if you  
are felling trees, a planned retreat path.  
S Keep fuel and oil caps, screws, and fas-  
teners securely tightened.  
S Use only McCulloch accessories and re-  
placement parts as recommended.  
HANDLE FUEL WITH CAUTION  
S Do not smoke while handling fuel or while  
operating the saw.  
S Eliminate all sources of sparks or flame in  
the areas where fuel is mixed or poured.  
There should be nosmoking, openflames,  
or work that could cause sparks. Allow en-  
gine to cool before refueling.  
S Always have fire extinguishing tools avail-  
able if you should need them.  
S Mix and pour fuel in an outdoor area on  
bare ground; store fuel in a cool, dry, well  
ventilated place; and use an approved,  
marked container for all fuel purposes.  
Wipe up all fuel spills before starting saw.  
S Move at least 10 feet (3 meters) from fuel-  
ing site before starting engine.  
S Turn the engine off and let saw cool in a  
non-combustible area, not on dry leaves,  
straw, paper, etc. Slowly remove fuel cap  
and refuel unit.  
S Storetheunit and fuel in an area where fuel  
vapors cannot reach sparks or open  
flames from water heaters, electric motors  
or switches, furnaces, etc.  
OPERATE YOUR SAW SAFELY  
S Do not operate a chain saw with one hand.  
Serious injury to the operator, helpers, by-  
standers or any combination of these per-  
sons may result from one-handed opera-  
tion.  
A
chain saw is intended for  
two-handed use.  
S Operate the chain saw only in a well-venti-  
lated outdoor area.  
S Do not operate saw from a ladder or in a  
tree.  
S Make sure the chain will not make contact  
with any object while starting the engine.  
Never try to start the saw when the guide  
bar is in a cut.  
S Do not put pressure on the saw at the end  
of the cut. Applying pressure can cause  
you to lose control when the cut is com-  
pleted.  
S Stop the engine before setting the saw  
down.  
S Do not operate a chain saw that is dam-  
aged, improperly adjusted, or not com-  
pletely and securely assembled. Always  
replace bar, chain, hand guard, or chain  
brake immediately if it becomes damaged,  
broken or is otherwise removed.  
S Hand carry saw only when engine is  
stopped. Carry with muffler away from body;  
guide bar and chain projecting behind you;  
guide bar covered with a scabbard.  
KICKBACK  
WARNING: Avoid kickback which  
can result in serious injury. Kickback is the  
backward, upwardor sudden forwardmotion  
of the guide bar occurring when the saw  
chain near the upper tip of theguide bar con-  
tacts any object such as a log or branch, or  
when the wood closes in and pinches the  
saw chain in the cut. Contacting a foreignob-  
ject in the wood can also result in loss of  
chain saw control.  
S Rotational Kickback can occur when the  
moving chain contacts an object at the up-  
per tip of the guide bar. This contact can  
cause the chain to dig into the object,  
which stops the chain for an instant. The  
result is a lightning fast, reverse reaction  
which kicks the guide bar up and back to-  
ward the operator.  
3
 
S Begin and continue cutting at full speed. If  
the chain is moving at a slower speed,  
there is greater chance of kickback occur-  
ring.  
S Pinch-Kickback can occur when the the  
wood closes in and pinches the moving  
saw chain in the cut along the top of the  
guide bar and the saw chain is suddenly  
stopped. This sudden stopping of the  
chain results in a reversal of the chain  
force used to cut wood and causes the  
saw to move in the opposite direction of the  
chain rotation. The saw is driven straight  
back toward the operator.  
S Cut one log at a time.  
S Use extreme caution when re-entering a  
previous cut.  
S Do not attempt cuts starting with the tip of  
the bar (plunge cuts).  
S Watch for shifting logs or other forces that  
could close a cut and pinch or fall into  
chain.  
S Pull-In can occur when the moving chain  
contacts a foreign object in the wood in the  
cut along the bottom of the guide bar and the  
saw chain is suddenly stopped. This sudden  
stopping pulls the saw forward and away  
from the operator and could easily cause the  
operator to lose control of the saw.  
S Use the Reduced--Kickback Guide Bar  
and Low--Kickback Chain specified for  
your saw.  
MAINTAIN CONTROL  
Avoid Pinch -Kickback:  
Stand to
left of th
S Be extremely aware of situations or ob-  
structions that can cause material to pinch  
the top of or otherwise stop the chain.  
S Do not cut more than one log at a time.  
S Do not twist the saw as the bar is with-  
drawn from an undercut when bucking.  
Thumb on  
underside of  
handlebar  
Avoid Pull -In:  
S Always begin cutting with the engine at full  
speed and the saw housing against wood.  
S Use wedges made of plastic or wood.  
Never use metal to hold the cut open.  
Never
hand positions  
Kickback Path  
Elbow locked  
Obstructions  
Thumb on underside of  
handlebar  
S Keep a good, firm gripon the saw with both  
hands when the engine is running and  
don’t let go. A firmgrip will help you reduce  
kickback and maintain control of the saw.  
Keep the fingers of your left hand encir-  
cling and your left thumb under the front  
handlebar. Keep your right hand com-  
pletely around the rear handle whether  
your are right handed or left handed. Keep  
your left arm straight with the elbow  
locked.  
Clear The Working Area  
REDUCE THE CHANCE OF  
KICKBACK  
S Recognize that kickback can happen.  
With a basic understanding of kickback,  
you can reduce the element of surprise  
which contributes to accidents.  
S Never let themoving chain contact any ob-  
ject at the tip of the guide bar.  
S Keep the working area free from obstruc-  
tions such as other trees, branches, rocks,  
fences, stumps, etc. Eliminate or avoid  
any obstruction that your saw chain could  
hit while you are cutting. When cutting a  
branch, do not let the guide bar contact  
branch or other objects around it.  
S Position your left hand on the front handle-  
bar so it is in a straight line with your right  
hand on the rear handle when making  
bucking cuts. Never reverse right and left  
hand positions for any type of cutting.  
S Standwith your weight evenly balancedon  
both feet.  
S Keep your saw chain sharp and properly  
tensioned. A loose or dull chain can in-  
crease the chance of kickback occurring.  
Follow manufacturer’s chain sharpening  
and maintenance instructions. Check ten-  
sion at regular intervals with the engine  
stopped, never with the engine running.  
Make sure the bar nuts are securely tight-  
ened after tensioning the chain.  
S Stand slightly to the left side of the saw to  
keep your body from being in a direct line  
with the cutting chain.  
S Do not overreach. You could be drawn or  
thrown off balance and lose control of the  
saw.  
S Do not cut above shoulder height. It is diffi-  
cult to maintain control of saw above  
shoulder height.  
4
 
KICKBACK SAFETY FEATURES  
CHAIN BRAKE AND CKA ANGLE  
S Chain Brake, designed to stop the chain in  
the event of kickback.  
WARNING: The following features  
are included on your saw to help reduce the  
hazard of kickback; however, such features  
will not totally eliminate this danger. As a  
chain saw user, do not rely only on safety de-  
vices. You must follow all safety precau-  
tions, instructions, and maintenance in this  
manual to help avoid kickback and other  
forces which can result in serious injury.  
S Reduced--Kickback Guide Bar, designed  
with a small radius tip which reduces the  
size of the kickback danger zone on the  
bar tip. A Reduced--Kickback Guide Bar  
has been demonstrated to significantly re-  
duce the number and seriousness of kick-  
backs when tested in accordance with  
safety requirements for gasoline powered  
chain saws as set by ANSI B175.1.  
WARNING:  
WE DO NOT REP-  
RESENT AND YOU SHOULD NOT AS-  
SUME THAT THE CHAIN BRAKE WILL  
PROTECT YOU IN THE EVENT OF A KICK-  
BACK. Kickback is a lightning fast action  
which throws the bar and rotating chain back  
and up toward the operator. Kickback can be  
caused by allowing contact of the bar tip in the  
danger zone with any hard object. Kickback  
can also be caused by pinching the saw chain  
along the top of the guide bar. This action may  
push the guide bar rapidly back toward the op-  
erator. Either of these events may cause you  
to lose control of the saw which could result in  
serious injury or even death. DO NOT RELY  
UPON ANY OF THE DEVICES BUILT INTO  
YOUR SAW. YOU SHOULD USE THE SAW  
PROPERLY AND CAREFULLY TO AVOID  
KICKBACK. Reduced--kickback guide bars  
and low--kickback saw chains reduce the  
chance and magnitude of kickback and are  
recommended. Your saw has a low kickback  
chain and bar as original equipment. Repairs  
on a chain brake should be made by an autho-  
rized servicing dealer. Take your unit to the  
place of purchase if purchased from a servic-  
ing dealer, or to the nearest authorized master  
service dealer.  
Reduced Kickback Symmetrical Guide Bar  
Small Radius Tip  
Symm
S Tip contact in some cases may cause a light-  
ning fast reverse REACTION, kicking guide  
bar up and back toward operator.  
Large Radius Tip  
S Pinching the saw chain along the top of the  
guide bar may push the guide bar rapidly  
back toward the operator.  
S Low--Kickback Chain, designed with a  
contoured depth gauge and guard link  
which deflect kickback force and allow  
wood to gradually ride intothe cutter. Low--  
Kickback Chain has met kickback per-  
formance requirements when tested on a  
representative sample of chain saws be-  
low 3.8 cubic inch displacement specified  
in ANSI B175.1--2000.  
S Either of these reactions may cause you to  
lose control of the saw which could result in  
serious injury. Do not rely exclusively upon  
devices built into your saw.  
WARNING:  
Computed kickback  
angle (CKA) listed on your saw and listed in the  
CKA table below represents angle of kickback  
your bar and chain combinations will have  
when tested in accordance with CSA (Cana-  
dian Standards Association) and ANSI stan-  
dards. When purchasing replacement bar and  
chain, considerations should be given to the  
lower CKA values. Lower CKA values repre-  
sent safer angles to the user, higher values in-  
dicate more angle and higher kick energies.  
Computed angles represented indicate total  
energy and angle associated without activation  
of the chain brake during kickback. Activated  
angle represents chain stopping time relative to  
activation angle of chain break and resulting  
kick angle of saw. In all cases lower CKA val-  
ues represent a safer operating environment  
for the user.  
Contoured Depth Gauge  
Elongated Guard Link  
Deflects  
kickback force  
Lo w --- Ki ckb a c k  
and allows wood  
Chain  
to gradually ride  
into cutter  
Can Obstruct Material  
Not a Lo---Chain  
S Front Hand Guard, designed to reduce the  
chance of your left hand contacting the chain  
if your hand slips off the front handlebar.  
S Position of front and rear handlebars, de-  
signed with distance between handles and  
“in-line” with each other. The spread and  
“in-line” position of the hands provided by  
this design work together to give balance  
and resistance in controlling the pivot of  
the saw back toward the operator if kick-  
back occurs.  
The following guide bar and chain combina-  
tions meet kickback requirements of CSA  
Standards Z62.1, Z62.3, & ANSI B175.1 when  
used on saws listed in this manual. Use of bar  
and chain combinations other than those listed  
is not recommended and may not meet the  
CKA requirements per standard.  
5
 
Computed kickback angle (CKA) Table  
BAR  
CKA without chain brake  
P/N  
Length CHAIN P/N  
18530051478  
MODEL  
MC4218AV  
530044693  
33_  
NOTE: If this saw is to be used for com-  
mercial logging, a chain brake is required  
and shall not be removed or otherwise dis-  
abled to comply with Federal OSHA Regula-  
tions for Commercial Logging.  
SPECIAL NOTICE: Your saw is equipped  
with a temperature limiting muffler and spark  
arresting  
screen  
which  
meets  
the  
requirements of California Codes 4442 and  
4443. All U.S. forest land and the states of  
California, Idaho, Maine, Minnesota, New  
Jersey, Oregon, and Washington require by  
law that many internal combustion engines to  
be equipped with a spark arresting screen. If  
you operate a chain saw in a state or locale  
where such regulations exist, you are legally  
responsible for maintaining the operating  
condition of these parts. Failure to do so is a  
violation of the law. Refer to the SERVICE  
section for maintenance of the spark arresting  
screen. Failure to follow all Safety Rules and  
Precautions can result in serious injury. If  
situations occur which are not covered in this  
manual, use care and good judgement. If you  
need assistance, contact your authorized  
service dealer or call 1-800--554--6723.  
WARNING: The engine exhaust  
from this product contains chemicals known  
to the State of California to cause cancer,  
birth defects or other reproductive harm.  
SAFETY NOTICE: Exposure to vibrations  
through prolonged use of gasoline powered  
hand tools could cause blood vessel or nerve  
damage in the fingers, hands, and joints of  
people prone to circulation disorders or  
abnormal swellings. Prolonged use in cold  
weather has been linked to blood vessel  
damage in otherwise healthy people. If  
symptoms occur such as numbness, pain,  
loss of strength, change in skin color or texture,  
or loss of feeling in the fingers, hands, or joints,  
discontinue the use of this tool and seek  
medical attention. An anti-vibration system  
does not guarantee the avoidance of these  
problems. Users who operate power tools on  
a continual and regular basis must monitor  
closely their physical condition and the  
condition of this tool.  
STANDARDS: This saw is listed by Under-  
writer’s Laboratories, Inc., in accordance with:  
ANSI B175.1-2000 American National  
Standards for Gasoline--Powered Chain  
Saws -- Safety Requirements  
CSA Z62.1-03 Chain Saws -- Occupational  
Health and Safety  
CSA Z62.3-04 Chain Saw Kickback Occu-  
pational Health and Safety  
ASSEMBLY  
Protective gloves (not provided) should be  
worn during assembly.  
ATTACHING THE BAR & CHAIN (If not  
already attached)  
Clutch cove
Bar nu
WARNING: If received assembled,  
repeat all steps to ensure your saw is properly  
assembled and all fasteners are secure. Al-  
ways wear gloves when handling the chain.  
The chain is sharp and can cut you even when  
it is not moving!  
Location of  
shipping  
spacer  
1. Loosen and remove the bar nuts and the  
clutch cover from the saw.  
2. Remove the plastic shipping spacer (if  
present).  
Chain adjustment tool  
(Bar Tool)  
3. An adjusting pin and screw is used to ad-  
just the tension of the chain. It is very im-  
portant when assembling the bar, that the  
pin located on the adjusting screw aligns  
into a hole in the bar. Turning the screw will  
move the adjustment pin up and down the  
screw. Locate this adjustment before you  
begin mounting the bar onto the saw. See  
following illustration.  
6
 
nside  
view of  
clutch  
cover  
Clut
Co
Adjustment located on clutch cover  
4. Turn the adjusting screw by hand coun-  
terclockwise until the adjusting pin just  
touches the stop. This should allow the  
pin to be near the correct position.  
5. Slide guide bar on bar bolts until guide  
bar stops against clutch drum sprocket.  
12. Install bar nuts and finger tighten only.  
Once the chain is tensioned, you will  
need to tighten bar nuts.  
CHAIN TENSION  
(Including units with chain already installed)  
WARNING: Wear protective gloves  
when handling chain. The chain is sharpand  
can cut you even when it is not moving.  
NOTE: When adjusting chain tension,  
make sure the bar nuts are finger tight only.  
Attempting to tension the chain when the bar  
nuts are tight can cause damage.  
Bar bolts  
Guide bar  
6. Carefully remove the chain from the pack-  
age. Hold chain with the drive links as  
shown.  
Checking the tension:  
Use the screwdriver end of the chain adjust-  
ment tool (bar tool) to move chain around guide  
bar. If the chain does not rotate, it is too tight. If  
the chain is too loose, it will sag below the bar.  
Tip of  
Bar  
Guide  
Bar  
CUTTERS MUST FACE IN  
DIIRECTION OF ROTATION  
Chain Adjustment  
Tool  
Depth Gauge  
Cutters  
Bar Nuts  
(Bar Tool)  
Adjusting the tension:  
Chain tension is very important. Chains  
stretch during use. This is especially true  
during the first few times you use your saw.  
Always check chain tension each time be-  
fore you start the chain saw.  
Drive Links  
1. Loosen bar nuts until they are finger tight  
against the clutch cover.  
7. Place chain over and behind the clutch  
retainer, fitting the drive links in the  
clutch drum sprocket.  
2. Turn adjusting screw clockwise until chain  
solidly contacts bottom of guide bar rail.  
8. Fit bottom of drive links between the  
teeth in the sprocket in the nose of the  
guide bar.  
9. Fit chain drive links into bar groove.  
10. Pull guide bar forward until chain is snug  
in guide bar groove. Ensure all drive  
links are in the bar groove.  
11. Now, install clutch cover making sure  
the adjusting pin is positioned in the low-  
er hole in the guide bar. Remember this  
pin moves the bar forward and back-  
ward as the screw is turned.  
3. Using bar tool, roll chain around guide bar  
to ensure all links are in bar groove.  
7
 
4. Lift up tip of guide bar to check for sag.  
7. If chain does not rotate, it is too tight.  
Slightly loosen bar nuts and loosen  
chain by turning the adjusting screw.  
Retighten bar nuts.  
8. If chain is too loose, it will sag below the  
guide bar. DO NOT operate the saw if  
the chain is loose.  
Release tip of guide bar, then turn ad-  
1
justing screw / turn clockwise. Repeat  
4
until sag does not exist.  
1
Adjusting Screw --  
/
4
Turn  
NOTE: The chain is tensioned correctly  
when the weight of the chain does not cause it  
to sag below the guide bar (with the chain saw  
sitting in an upright position), but the chain still  
moves freely around the guide bar.  
5. While lifting tip of guide bar, tighten bar  
nuts securely with the bar tool.  
WARNING: If the saw is operated  
with a loose chain, the chain could jump off the  
guide bar and result in serious injury to the op-  
erator and/or damage the chain making it un-  
usable. If the chain jumps off the guide bar, in-  
spect each drive link for damage. Damaged  
chain must be repaired or replaced.  
Bar Nuts  
6. Use the screwdriver end of the bar tool  
to move chain around guide bar.  
OPERATION  
KNOW YOUR CHAIN SAW  
READ THIS INSTRUCTION MANUAL AND SAFETY RULES BEFORE OPERATING YOUR  
CHAIN SAW. Compare the illustrations with your unit to familiarize yourself with the location of  
the various controls and adjustments. Save this manual for future reference.  
Front Handle  
Front Hand Guard  
Chain  
Adjustment Tool  
(Bar Tool)  
Starter Rope  
ON/STOP  
Switch  
Choke/  
Fast Idle  
Lever  
Chain  
Muffler  
Bar Oil Fill Cap  
Bar  
Sprocket  
Hole  
Primer Bulb  
Starter Housing  
Fuel Mix Fill Cap  
Cylinder Cover  
Chain  
Brake  
C
D
o
Throttle  
Lockout  
Rear  
Handle  
Adjusting Screw  
Guide Bar  
Chain  
Catcher  
Throttle  
Trigger  
Bar Nuts  
Clutch Cover  
ON/STOP SWITCH  
The ON/STOP SWITCH is used to stop the  
engine.  
THROTTLE TRIGGER  
The THROTTLE TRIGGER controls engine  
speed.  
8
 
THROTTLE LOCK--OUT  
CHAIN BRAKE  
The THROTTLE LOCK--OUT must be  
pressed before you can squeeze the throttle  
trigger. This feature prevents you from acci-  
dentally squeezing the trigger.  
The chain brake is a device designed to stop  
the chain if kickback occurs. The chain brake  
activates automatically in the event of kick-  
back. The chain brake activates manually if the  
front hand guard is pushed forward. The chain  
brake is disengaged by pulling the front hand  
guard back toward the front handle as far as  
possible.  
CHOKE/FAST IDLE LEVER  
The choke and fast idle are set by pulling the  
CHOKE/FAST IDLE LEVER out to the full ex-  
tent for cold starting or after refueling. The  
choke provides additional fuel to the engine  
during cold starting.  
CHAIN TENSION  
It is normal for a new chain to stretch during the  
first 15 minutes of operation. You should check  
your chain tension each time before you start  
the chain saw. See CHAIN TENSION under  
the ASSEMBLY section.  
PRIMER BULB  
The PRIMER BULB circulates fuel to the car-  
buretor to provide quicker starting.  
FUEL REQUIREMENTS  
WARNING: If the saw is operated  
with a loose chain, the chain could jump off  
the guide bar and result in serious injury to  
the operator and/or damage the chain mak-  
ing it unusable.  
This engine requires the use of minimum 87  
octane [R+M]/2 clean gasoline.  
IMPORTANT  
Use of alcohol blended fuels (called gasohol or  
using ethanol or methanol) can cause major  
engine performance and durability problems.  
BEFORE STARTING ENGINE  
WARNING: Muffler is very hot dur-  
ing and after use. Do not touch the muffler or  
allow combustible material such as dry  
grass or fuel to do so.  
WARNING: Alternative fuels (not  
gasoline) such as E--15 (15% alcohol), E--20  
(20% alcohol), E--85 (85% alcohol) are NOT  
classified as gasoline and are NOT approved  
for use in 2--stroke gasoline engines. Use of al-  
ternative fuels will cause problems such as: im-  
proper clutch engagements, overheating, va-  
por lock, power loss, lubrication deficiency,  
deterioration of fuel lines, gaskets and internal  
carburetor components, etc. Alternative fuels  
cause high moisture absorption into the fuel/oil  
mixture leading to oil and fuel separation.  
BAR AND CHAIN LUBRICATION  
The bar and chain require continuous lubri-  
cation. Lubrication is provided by the auto-  
matic oiler system when the oil tank is kept  
filled. Lack of oil will quickly ruin the bar and  
chain. Too little oil will cause overheating  
shown by smoke coming from the chain and/  
or discoloration of the bar.  
WARNING: Be sure to read the fuel  
handling information in the safety rules sec-  
tionof this manual before you begin. If youdo  
not understand the fuel handling information  
do not attempt to fuel your unit. Seek help  
from someone that does understand the in-  
formation or call the customer assistance  
help line at 1-800-554-6723.  
FUELING ENGINE  
WARNING: Remove fuel cap slow-  
ly when refueling.  
HELPFUL TIP  
To obtain the correct oil mix  
ratio, pour 3.2 ounces of  
2-cycle synthetic oil into  
one gallon of fresh gas.  
In freezing weather oil will thicken, making it  
necessary to thin bar and chain oil with a  
small amount (5 to 10%) of #1 Diesel Fuel or  
kerosene. Bar and chain oil must be free  
flowing for the oil system to pump enough oil  
for adequate lubrication.  
This engine is certified to operate on un-  
leaded gasoline. Before operation, gasoline  
must be mixed with a good quality synthetic  
2-cycle air-cooled engine oil designed to be  
mixed at a ratio of 40:1. A 40:1 ratio is ob-  
tained by mixing3.2fluidounces (95ml) of oil  
with 1 gallon (4 liters) of unleaded gasoline.  
Pour the entire contents of the 3.2 ounce (95  
ml) container of oil into 1 gallon (4 liters) of  
gasoline to achieve the proper fuel mixture.  
DO NOT USE automotive or marine oil.  
These oils will cause engine damage. When  
mixing fuel follow the instructions printed on  
the container. Once oil is added to gasoline,  
shake container momentarily to assure that  
the fuel is thoroughly mixed. Always read  
and follow the safety rules relating to fuel be-  
fore fueling your unit.  
If bar and chain oil is not available, use a  
good grade SAE 30 oil.  
S Never use waste oil for bar and chainlubri-  
cation.  
S Always stop the engine before removing  
the oil cap.  
CHAIN BRAKE  
Ensure chain brake is disengaged by pulling  
the front hand guard back toward the front han-  
dle as far as possible. The chain brake must be  
disengaged before cutting with the saw.  
WARNING: The chain must not  
move when the engine runs at idle speed. If  
the chain moves at idle speed refer to CAR-  
BURETOR ADJUSTMENT within this  
manual. Avoid contact with the muffler. A hot  
muffler can cause serious burns.  
CAUTION: Never use straight gasoline in  
your unit. This will cause permanent engine  
damage and void the limited warranty.  
9
 
To stop the engine move the ON/STOP  
switch to the STOP position.  
To start the engine hold the saw firmly on the  
ground as illustrated. Make sure the chain is  
free to turn without contacting any object.  
3. Pull choke/fast idle lever out to the full  
extent (to the FULL CHOKE position).  
4. Pull the starter rope sharply 5 times with  
your right hand. Then, proceed to the  
next step.  
NOTE: If the engine sounds as if it is trying  
to start before the 5th pull, stop pulling and  
immediately proceed to the next step.  
5. Push the choke/fast idle lever in to the  
HALF CHOKE position.  
Use only 15-- 1 8 (40 -- 45 cm) of  
rope per pull.  
Hold saw firmly while pulling starter rope.  
Starter Rope Handle  
CHOKE/FAST IDLE LEVER  
Left Hand  
on Front  
Handle  
OFF  
HALF  
ULL  
Right Foot Through Rear Handle  
6. Pull the starter rope sharply with your  
right hand until the engine starts.  
7. Allow the engine to run for approximate-  
ly 30 seconds. Then, squeeze and re-  
lease the throttle trigger to allow engine  
to return to idle speed.  
STARTING A WARM ENGINE  
1. Move ON/STOP switch to the ON posi-  
tion.  
2. Slowly press primer bulb 6 times.  
3. To set the fast idle, pull the choke/fast  
idle lever out to the full extent (to the full  
choke position); then push the lever  
back in to the HALF CHOKE position.  
4. Pull the starter rope sharply with your  
right hand until the engine starts.  
WARNING: Do not attempt to throw  
or drop--start the chain saw. Doing so will put  
the operator at risk of serious injury due to  
loss of control of the chain saw.  
IMPORTANT POINTS TO REMEMBER  
When pulling the starter rope, do not use the full  
extent of the rope as this can cause the rope to  
break. Do not let starter rope snap back. Hold  
the handle and let the rope rewind slowly.  
For cold weather starting, start the unit at  
FULL CHOKE; allow the engine to warm up  
before squeezing the throttle trigger.  
NOTE: Do not attempt to cut material with  
the choke/fast idle lever in the FULLCHOKE  
position.  
5. Squeeze and release throttle trigger to  
allow engine to return to idle speed.  
DIFFICULT STARTING (or starting a  
flooded engine)  
HELPFUL TIP  
If your engine still does not  
start after following these  
instructions, please call  
1-800-554 -6723.  
The engine may be flooded with too much fuel  
if it has not started after 10 pulls. Flooded en-  
gines can be cleared of excess fuel by pushing  
the choke/fast idle lever in completely (to the  
OFF CHOKE position) and then following the  
warm engine starting procedure listed above.  
Ensure the ON/STOP switch is in the ON posi-  
tion. Starting could require pulling the starter  
rope handle many times depending on how  
badly the unit is flooded. If engine fails to start,  
refer to the TROUBLESHOOTING TABLE or  
call 1-800-554-6723.  
STARTING A COLD ENGINE (or warm  
engine after running out of fuel)  
NOTE: In the following steps, when the  
choke/fast idle lever is pulled out to the full  
extent, the correct throttle setting for starting  
is set automatically.  
NITION  
WITCH  
CHAIN BRAKE  
ON  
WARNING: If the brake band is  
worn too thin it may break when the chain  
brake is triggered. Witha broken brake band,  
the chain brake will not stop the chain. The  
chain brake should be replaced by an autho-  
rized service dealer if any part is worn to less  
than 0.020(0.5 mm) thick. Repairs on a  
chain brake should be made by an autho-  
rized service dealer. Take your unit to the  
place of purchase if purchased from a ser-  
vicing dealer, or to the nearest authorized  
master service dealer.  
STOP  
Choke  
Lever  
1. Move ON/STOP switch to the ON posi-  
tion.  
2. Slowly press primer bulb 6 times.  
10  
 
S This saw is equipped with a chain brake.  
The brake is designed to stop the chain if  
kickback occurs.  
S Practice cutting a few small logs using the  
following techniques to get the “feel” of us-  
ing your saw before you begin a major  
sawing operation.  
S The inertia--activated chain brake is  
activated if the front hand guard is pushed  
forward, either manually (by hand) or  
automatically (by sudden movement).  
S If the brake is already activated, it is  
disengaged by pulling the front hand guard  
back toward the front handle as far as  
possible.  
S
S
S
S
Squeeze the throttle trigger and allow the  
engine to reach full speed before cutting.  
Begin cutting with the saw frame  
against the log.  
Keep the engine at full speed the entire  
time you are cutting.  
Allow the chain to cut for you. Exert only  
light downward pressure. If you force  
the cut, damage to the bar, chain, or en-  
gine can result.  
S When cutting with the saw, the chain brake  
must be disengaged.  
Disengaged  
S
Release the throttle trigger as soon as  
the cut is completed, allowing the en-  
gine to idle. If you run the saw at full  
throttle without a cutting load, unneces-  
sary wear can occur to the chain, bar,  
and engine. It is recommended that  
the engine not be operated for lon-  
ger than 30 seconds at full throttle.  
Toavoid losing control when cut is com-  
plete, do not put pressure onsaw at end  
of cut.  
S
Braking function control  
CAUTION: The chain brake must be  
checked several times daily. The engine  
must be running when performing this proce-  
dure. This is the only instance when the saw  
should be placed on the ground with the en-  
gine running.  
S Stop the engine before setting the saw  
down after cutting.  
TREE FELLING TECHNIQUES  
WARNING: Check for broken or  
dead branches which can fall while cutting  
causing serious injury. Do not cut near build-  
ings or electrical wires if you do not know the  
direction of tree fall, nor cut at night since you  
will not be ale to see well, nor during bad  
weather such as rain, snow, or strong winds,  
etc. If the tree makes contact with any utility  
line, the utility company should be notified im-  
mediately.  
Place the saw on firm ground. Grip the rear  
handlewith your right hand andthe front han-  
dle with your left hand. Apply full throttle by  
fully depressing the throttle trigger. Activate  
the chain brake by turning your left wrist  
against the hand guard without releasing  
your grip around the front handle. The chain  
should stop immediately.  
Inertia activating function control  
S Carefully plan your sawingoperation inad-  
vance.  
WARNING: When performing the  
following procedure, the engine must be  
turned off.  
Grip the rear handle with your right hand and  
the front handle with your left hand. Hold the  
chain saw approximately 14(35 cm) above a  
stump or other wooden surface. Release your  
grip on the front handle and use the weight of  
the saw to let the tip of the guide bar fall forward  
and contact the stump. When the tip of the bar  
hits the stump, the brake should activate.  
S Clear thework area. You needa clear area  
all around the tree so you can have secure  
footing.  
S The chain saw operator should keep on  
the uphill side of the terrain as the tree is  
likely to rollor slidedownhill after it is felled.  
S Study the natural conditions that can cause  
the tree to fall in a particular direction.  
Natural conditions that can cause a tree to  
fall in a particular direction include:  
S The wind direction and speed.  
OPERATING TIPS  
S The lean of the tree. The lean of a tree  
might not be apparent due to uneven or  
sloping terrain. Use a plumb or level to de-  
termine the direction of tree lean.  
S Check chain tension before first use, after  
1 minute of operation, and each time be-  
fore you start the chain saw. See CHAIN  
TENSION in the ASSEMBLY section.  
S Cut wood only. Do not cut metal, plastics,  
masonry, non-wood building materials, etc.  
S Stop the saw if the chain strikes a foreign  
object. Inspect the saw and repair or re-  
place parts as necessary. If the chain  
jumps off the guide bar, inspect the chain  
for damaged drive links before reinstalling.  
Burrs on drive links, which prevent them  
from entering the groove of the guide bar,  
can be removed with a flat file.  
S Weight and branches on one side.  
S Surrounding trees and obstacles.  
Look for decay and rot. If the trunk is rotted,  
it can snap and fall toward the operator.  
Check for broken or dead branches which  
can fall on you while cutting.  
Make sure there is enough room for the tree to  
fall. Maintain a distance of 2-1/2 tree lengths  
from the nearest person or other objects. En-  
gine noise can drown out a warning call.  
Remove dirt, stones, loose bark, nails, sta-  
ples, and wire from the tree where cuts are to  
be made. Plan a clear retreat path to the rear  
and diagonal to the line of fall.  
S Keep the chain out of dirt and sand. Even a  
small amount of dirt will dull a chain, increase  
the possibility of kickback, and require chain  
sharpening or replacement.  
11  
 
NOTE: Before felling cut is complete, use  
wedges to open the cut if necessary to  
controlthedirectionof fall. To avoid kickback  
and chain damage, use wood or plastic  
wedges, but never steel or iron wedges.  
S Be alert to signs that the tree is ready to fall:  
cracking sounds, widening of the felling cut,  
or movement in the upper branches.  
Plan a clear retreat path  
Direction of Fall  
45_  
S As tree starts to fall, stop saw, put it down,  
and get away quickly on your planned re-  
treat path.  
FELLING LARGE TREES  
S DO NOT cut down a partially fallen tree  
with your saw. Be extremely cautious with  
partially fallen trees that may be poorly  
supported. When a tree doesn’t fall com-  
pletely, set thesaw asideand pull down the  
tree with a cable winch, block and tackle,  
or tractor.  
(6 inches (15 cm) in diameter or larger)  
The notch method is used to fell large trees.  
A notch is cut on the side of the tree in thede-  
sired direction of fall. After a felling cut is  
made on the opposite side of tree, the tree  
will tend to fall into the notch.  
NOTE: If the tree has large buttress roots,  
remove them before making the notch. If us-  
ing saw to remove buttress roots, keep saw  
chain from contacting ground to prevent dull-  
ing of the chain.  
CUTTING A FALLEN TREE  
(BUCKING)  
Bucking is the term used for cutting a fallen  
tree to the desired log size.  
NOTCH CUT AND FELLING THE  
WARNING: Do not stand on the log  
being cut. Any portion can roll causing loss  
of footing and control. Do not stand downhill  
of the log being cut.  
TREE  
S Make notch cut by cutting the top of the  
notch first. Cut through 1/3 of the diameter  
of the tree. Next complete the notch by cut-  
ting the bottom of the notch. See illustra-  
tion. Once the notch is cut remove the  
notch of wood from the tree.  
IMPORTANT POINTS  
S Cut only one log at a time.  
S Cut shattered wood very carefully; sharp  
pieces of wood could be flung toward opera-  
tor.  
Final (felling) cut here, 2 inches  
(5 cm) above center of notch.  
S Use a sawhorse to cut small logs. Never  
allow another person to hold the log while  
cutting and never hold the log with your leg  
or foot.  
First cut  
Notch  
S Do not cut in an area where logs, limbs,  
and roots are tangled such as in a blown  
down area. Drag the logs into a clear area  
before cutting by pulling out exposed and  
cleared logs first.  
Hinge  
TYPES OF CUTTING USED FOR  
BUCKING  
Second cut  
WARNING:  
If saw becomes  
pinched or hung in a log, don’t try to force it  
out. You can lose control of the saw resulting  
in injury and/or damage to the saw. Stop the  
saw, drive a wedge of plastic or wood into the  
cut until the saw can be removed easily. Re-  
start the saw andcarefully reenter thecut. To  
avoid kickback and chain damage, do not  
use a metal wedge. Do not attempt to restart  
your saw when it is pinched or hung in a log.  
S After removing the wood from the notch,  
make the felling cut on the opposite side of  
the notch. This is done by making a cut about  
two inches (5 cm) higher than the center of  
the notch. This will leave enough uncut wood  
between the felling cut and the notch to form  
a hinge. This hinge will help prevent the tree  
from falling in the wrong direction.  
Hinge holds tree on stump and helps  
control fall  
Opening of  
felling cut  
Use a wedge to remove pinched saw  
Turn saw OFF and use a plastic or  
wooden wedge to force cut open.  
Overcutting begins on the top side of the log  
with the bottom of the saw against the log.  
When overcutting use light downward pres-  
sure.  
Closing  
of notch  
12  
 
st  
1
Cut  
Overcutting  
Und
nd  
2
Cut  
Undercutting involves cutting on the under-  
side of the log with top of saw against the log.  
When undercutting use light upward pres-  
sure. Hold saw firmly and maintain control.  
The saw will tend to push back toward you.  
Using a support stand  
nd  
2
Cut  
WARNING: Never turn saw upside  
down to undercut. The saw cannot be con-  
trolled in this position.  
st  
1
Cut  
Always make your first cut on the compres-  
sion side of the log. The compression side of  
the log is where the pressure of the log’s  
weight is concentrated.  
st  
1
Cut  
nd  
2
Cut  
First cut on compression side of log  
LIMBING AND PRUNING  
Second cut  
Second cut  
WARNING: Be alert for and guard  
against kickback. Do not allow the moving  
chain to contact any other branches or objects  
at the nose of the guide bar when limbing or  
pruning. Allowing such contact can result in  
serious injury.  
WARNING: Never climb into a tree to  
limb or prune. Do not stand on ladders, plat-  
forms, a log, or in any position which can cause  
you to lose your balance or control of the saw.  
First cut on compression side of log  
BUCKING WITHOUT A SUPPORT  
S Overcut through 1/3 of the diameter of the  
log.  
S Roll the log over and finish with a second  
overcut.  
IMPORTANT POINTS  
S Work slowly, keeping both hands firmly  
gripped on the saw. Maintain secure footing  
and balance.  
S Watch out for springpoles. Springpoles are  
small size limbs which can catch the saw  
chain and whip toward you or pull you off bal-  
ance. Use extreme caution when cutting  
small size limbs or slender material.  
S Be alert for springback. Watch out for  
branches that are bent or under pressure.  
Avoid being struck by the branch or the  
saw when the tension in the wood fibers is  
released.  
S Watch for logs with a compression side to  
prevent the saw from pinching. See il-  
lustrations for cutting logs with a compres-  
sion side.  
BUCKING USING A LOG OR  
SUPPORT STAND  
S Remember your first cut is always on the  
compression side of the log.  
(Refer to the illustrations below for your  
first and second cut)  
S Keep a clear work area. Frequently clear  
branches out of the way to avoid tripping  
over them.  
S Your first cut should extend 1/3 of the  
diameter of the log.  
S Finish with your second cut.  
LIMBING  
S Always limb atreeafter it is cut down. Only  
then can limbing be done safely and prop-  
erly.  
nd  
Using a log for support  
2
Cut  
S Leave the larger limbs underneath the felled  
tree to support the tree as you work.  
S Start at the base of the felled tree and work  
toward the top, cutting branches and limbs.  
Remove small limbs with one cut.  
S Keep the tree between you and the chain.  
Cut from the side of the tree opposite the  
branch you are cutting.  
st  
1
Cut  
13  
 
S Remove larger, supporting branches with  
the cutting techniques described in BUCK-  
ING WITHOUT A SUPPORT.  
S Always use an overcut to cut small and free-  
ly hanging limbs. Undercutting could cause  
limbs to fall and pinch the saw.  
S Next make a 2nd cut all the way through  
the limb. Then cut a thirdovercut leavinga  
1to2 inch (2.5 to 5cm) collar from thetruck  
of the tree.  
Second cut  
Third cut  
PRUNING  
WARNING: Limit pruning to limbs  
shoulder height or below. Do not cut if  
branches are higher than your shoulder. Get a  
professional to do the job.  
S Make your first cut 1/3 of the way through the  
bottom of the limb.  
Collar  
First cut  
Pruning technique  
SERVICE  
GENERAL RECOMMENDATIONS  
The warranty on this unit does not cover  
items that have been subjected to operator  
abuse or negligence. To receive full value  
from the warranty, the operator must main-  
tain unit as instructed in this manual. Various  
adjustments will need to be made periodical-  
ly to properly maintain your unit.  
S Once a year, replace the spark plug, air filter,  
and check guide bar and chain for wear. A  
new spark plug and air filter assures proper  
air-fuel mixture and helps your engine run  
better and last longer.  
WARNING: Disconnect the spark  
plug before performing maintenance except  
for carburetor adjustments.  
We recommend all service and adjustments  
not listed in this manual be performed by an  
authorized or Master Service Dealer.  
HELPFUL TIP  
IMPORTANT: Have all  
repairs other than the rec-  
ommended maintenance  
described in the instruction  
manual performed by an  
CHECK FOR DAMAGED OR  
authorized service dealer.  
WORN PARTS  
If any dealer other than an authorized  
service dealer performs work on the  
product, we may not pay for repairs un-  
der warranty. It is your responsibility to  
maintain and perform general mainte-  
nance.  
Contact an authorized service dealer for re-  
placement of damaged or worn parts.  
NOTE: It is normal for a small amount of oil  
to appear under the saw after engine stops.  
Do not confuse this with a leaking oil tank.  
S ON/STOP Switch -- Ensure ON/STOP  
switch functions properly by moving the  
switch to the STOP position. Make sure en-  
gine stops; then restart engine and continue.  
S Fuel Tank -- Do not use saw if fuel tank  
shows signs of damage or leaks.  
S Oil Tank -- Do not use saw if oil tank shows  
signs of damage or leaks.  
CHECK FOR LOOSE  
FASTENERS AND PARTS  
S Bar Nuts  
S Chain  
S Muffler  
S Cylinder Shield  
S Air Filter  
S Handle Screws  
S Vibration Mounts  
S Starter Housing  
S Front Hand Guard  
MAINTENANCE SCHEDULE  
Check:  
Fuel mixture level . . . . Before each use  
Bar lubrication . . . . . . . Before each use  
Chain tension . . . . . . . Before each use  
Chain sharpness . . . . . Before each use  
For damaged parts . . . Before each use  
For loose caps . . . . . . Before each use  
For loose fasteners . . . Before each use  
For loose parts . . . . . . Before each use  
Inspect and Clean:  
Bar . . . . . . . . . . . . . . . . Before each use  
Complete saw . . . . . . . After each use  
Air filter . . . . . . . . . . . . . Every 5 hours*  
Chain brake . . . . . . . . . Every 5 hours*  
Spark arresting screen  
and muffler . . . . . . . . . . Every 25 hours*  
Replace spark plug . Yearly  
Replace fuel filter . . . Yearly  
CHECK CHAIN SHARPNESS  
* Hours of Operation --  
Each hour of operation is approximately  
2 tanks of fuel.  
A sharp chain makes wood chips. A dull  
chain makes a sawdust powder and cuts  
slowly. See CHAIN SHARPENING.  
14  
 
CHECK GUIDE BAR  
CHECK CHAIN BRAKE  
See CHAIN BRAKE in the OPERATION  
section.  
Conditions which require guide bar mainte-  
nance:  
S Saw cuts to one side or at an angle.  
S Saw has to be forced through the cut.  
S Inadequate supply of oil to bar/chain.  
Check the condition of guide bar each time  
chain is sharpened. A worn guide bar will  
damage the chain and make cutting difficult.  
After each use, ensure ON/STOP switch is  
in the STOP position, then clean all sawdust  
from the guide bar and sprocket hole.  
To maintain guide bar:  
S Move ON/STOP switch to STOP.  
S Loosen and remove bar nuts and clutch  
cover. Remove bar and chain from saw.  
S Clean the oil holes and bar groove after  
each 5 hours of operation.  
CLEAN AIR FILTER  
CAUTION: Do not clean filter in gasolineor  
other flammable solvent to avoid creating a  
fire hazard or producing harmful evaporative  
emissions.  
Cleaning the air filter:  
A dirty air filter decreases the life and perfor-  
mance of the engine and increases fuel con-  
sumption and harmful emissions. Always  
clean your air filter after 10 tanks of fuel or 5  
hours of operation, whichever comes first.  
Clean more frequently in dusty conditions. A  
used air filter can never be completely  
cleaned. It is advisable to replace your air fil-  
ter with a new one after every 50 hours of op-  
eration, or annually, whichever comes first.  
1. Loosen 3 screws on cylinder cover.  
2. Remove cylinder cover.  
Remove Sawdust From  
Guide Bar Groove  
3. Remove air filter cover and air filter.  
4. Clean the air filter using hot soapy water.  
Rinse with clean cool water. Air dry com-  
pletely before reinstalling.  
Oil Holes  
5. Reinstall air filter and air filter cover.  
6. Reinstall cylinder cover and 3 screws.  
Tighten securely.  
S Burring of guide bar rails is a normal  
process of rail wear. Remove these burrs  
with a flat file.  
S When rail top is uneven, use a flat file to re-  
store square edges and sides.  
Cylinder  
Air Filter  
Cover  
Cover  
File Rail Edges  
and Sides  
Square  
Air Filter  
Worn Groove  
Correct Groove  
Replace guide bar when the groove is worn,  
the guide bar is bent or cracked, or when ex-  
cess heating or burring of the rails occurs. If re-  
placement is necessary, use only the guide bar  
specified for your saw in the repair parts list or  
on the decal located on the chain saw.  
CHECK FUEL MIXTURE LEVEL  
S See FUELING ENGINE under the OP-  
ERATION section.  
LUBRICATION  
INSPECT MUFFLER AND SPARK  
ARRESTING SCREEN  
As the unit is used, carbon deposits build up  
on the muffler and spark arresting screen,  
and must be removed to avoid creating a fire  
hazard or affecting engine performance.  
Replace the spark arresting screen if breaks  
occur.  
Bar Oil  
Fill Cap  
Spark  
Arresting  
Screen  
Exhaust  
Outlet  
Cover  
S See GUIDE BAR AND CHAIN OIL under  
the OPERATION section.  
INSPECT AND CLEAN UNIT AND  
DECALS  
S After each use, inspect complete unit for  
loose or damaged parts. Clean the unit and  
decals using a damp cloth with a mild deter-  
gent.  
Nut  
Muffler  
S Wipe off unit with a clean dry cloth.  
15  
 
CLEANING THE SPARK ARREST-  
WARNING: Wear protective gloves  
when handling chain. The chain is sharp and  
can cut you even when it is not moving.  
Conditions which indicate the need for chain  
sharpening:  
ING SCREEN  
Cleaning is required every 25 hours of op-  
eration or annually, whichever comes first.  
1. Loosen and remove the nut from the ex-  
haust outlet cover.  
S Reduction in size of wood chips. The size  
of the wood chip will decrease as the chain  
gets duller until it becomes more like a  
powder than a chip. Note that dead or  
rotted wood will not produce a good chip.  
S Saw cuts to one side or at an angle.  
S Saw has to be forced through the cut.  
Tools required:  
S 5/32 inch (4 mm) diameter round file and  
file holder  
S Flat file  
S Depth gauge tool  
2. Remove the exhaust oulet cover.  
3. Remove spark arresting screen. Handle  
screen carefully to prevent damage.  
4. Clean the spark arresting screen gently  
with a wire brush. Replace screen if  
breaks are found.  
5. Replace any broken or cracked muffler  
parts.  
6. Reinstall spark arresting screen, exhaust  
outlet cover, and nut. Tighten nut securely.  
REPLACE SPARK PLUG  
The spark plug should be replaced each  
year to ensure the engine starts easier and  
runs better. Ignition timing is fixed and non-  
adjustable.  
TO SHARPEN CHAIN:  
1. Move ON/STOP switch to the STOP  
position.  
NOTE: This spark ignition system complies  
with the Canadian standard ICES--002.  
1. Loosen 3 screws on cylinder cover.  
2. Remove the cylinder cover.  
3. Pull off the spark plug boot.  
4. Remove spark plug from cylinder and  
discard.  
2. Check chain for proper tension. Adjust  
chain tension if necessary. See CHAIN  
TENSION section.  
3. Sharpen cutters.  
S
To sharpen the cutters, position the  
file holder level (90˚) so that it rests  
on the top edges of the cutter and  
depth gauge.  
5. Replace with Champion RCJ--7Y spark  
3
plug and tighten securely with a  
/
4
inch  
NOTE: The chain has both left and  
(19 mm) socket wrench. Spark plug gap  
should be 0.025 inch (0,6 mm).  
right hand cutters.  
File Holder  
Cutter  
6. Reinstall the spark plug boot.  
File  
7. Reinstall the cylinder cover and  
screws. Tighten securely.  
3
90˚  
Cylinder  
Cover  
Depth Gauge  
S
Align the 30˚ file holder marks paral-  
lelwith thebar and to the center of the  
chain.  
Spark  
Plug Boot  
Cutter  
30˚  
File Holder Line  
Cutter  
Spark  
Plug  
S
Sharpen cutters on one side of the  
chain first. File from the inside of each  
cutter to the outside. Then, turn the  
chain saw around and repeat the pro-  
cess for the other side of the chain.  
File on the forward stroke only. Use 2  
or 3 strokes per cutting edge.  
Keep all cutters the same length  
when filing.  
REPLACE FUEL FILTER  
S
S
S
To replace fuel filter, drain your unit by run-  
ning it dry of fuel. Remove fuel cap and its  
connected retainer from tank. Pull filter from  
tank and remove from line. Replace and re-  
assemble.  
File enough to remove any damage  
to cutting edges (side plate and top  
plate of cutter).  
CHAIN ADJUSTMENT  
See CHAIN TENSION in ASSEMBLY section.  
CHAIN SHARPENING  
Remove Damage  
All Cutters  
Same Length  
WARNING: Improper chain sharp-  
ening techniques and/or depth gauge mainte-  
nance will increase the chance of kickback  
which can result in serious injury.  
Top Plate  
Side Plate  
16  
 
S
File chain to meet the specifications  
as shown.  
If you require further assistance or are unsure  
about performing this procedure, contact your  
authorized service dealer or call our customer  
assistance help line at 1--800--554--6723.  
80˚  
60˚  
CARBURETOR ADJUSTMENT  
WARNING: The chain will be moving  
during most of this procedure. Wear your pro-  
tective equipment and observe all safety pre-  
cautions. The chain must not move at idle  
speed.  
The carburetor has been carefully set at the  
factory. Adjustments may be necessary if  
you notice any of the following conditions:  
S Chain moves at idle. See IDLE SPEED--T  
adjusting procedure.  
S Saw will not idle. See IDLE SPEED--T ad-  
justing procedure.  
30˚  
Hook Angle  
0.025 inch  
(0.65 mm)  
Rounded  
Corner  
Right  
Squared Off  
Corner  
Too Much Hook Angle  
Idle Speed--T  
Allow engine to idle. If the chain moves, idle is  
too fast. If the engine stalls, idle is too slow. Ad-  
just speed until engine runs without chain  
movement (idle too fast) or stalling (idle too  
slow). The idle speed screw is located in the  
area above the primer bulb and is labeled T.  
S Turn idle screw (T) clockwise to increase  
engine speed.  
Wrong  
S Turn idle screw (T) counterclockwise to  
decrease engine speed.  
WARNING:  
Maintain the proper  
hook angle according to the manufacturer’s  
specifications for the chain you are using. Im-  
proper hook angle will increase the chance of  
kickback which can result in serious injury.  
4. Check and lower depth gauges.  
If you require further assistance or are unsure  
about performing this procedure, contact your  
authorized service dealer or call our customer  
assistance help line at 1--800--554--6723.  
COOLING SYSTEM  
File  
Depth Gauge Tool  
To keep the working temperature as low as  
possible the machine is equipped with a  
cooling system.  
Depth Gauge  
The cooling system consists of:  
S Air intake on the starter  
S Air guide plate  
S
S
Place gauge tool on cutter.  
S Fins on the flywheel  
If the depth gauge is higher than the  
depth gauge tool, file it level to the top of  
the depth gauge tool.  
S Cooling fins on the cylinder  
S Cylinder cover (directs cold air over the  
cylinder)  
S
Maintain rounded front corner of  
depth gauge with a flat file.  
Clean the cooling system with a brush after  
each use, more often in demanding condi-  
tions. A dirty or blocked cooling system re-  
sults in the machine overheating which  
causes damage to the piston and cylinder.  
NOTE: The very top of the depth  
gauge should be flat with the front  
half rounded off with a flat file.  
STORAGE  
SEASONAL STORAGE  
WARNING: Perform the following  
steps after each use:  
Prepareyour unit for storage at theend of the  
season or if it will not be used for 30 days or  
more. If your chain saw is to be stored for a  
period of time:  
S Allow the engine to cool, and secure the  
unit before storing or transporting.  
S Store chain saw and fuel in a well venti-  
lated area where fuel vapors cannot reach  
sparks or open flames from water heaters,  
electric motors or switches, furnaces, etc.  
S Store chain saw with all guards in place  
and position chain saw so that any sharp  
object cannot accidentally cause injury.  
S Store chain saw well out of the reach of  
children.  
S Clean saw thoroughly before storage.  
S Store in a clean dry area.  
S Lightly oil external metal surfaces and  
guide bar.  
S Oil the chain and wrap it in heavy paper or  
cloth.  
17  
 
FUEL SYSTEM  
ENGINE  
Under FUELING ENGINE in the OPERA-  
TION section of this manual, see message  
labeled IMPORTANT regarding the use of  
gasohol in your chain saw. Fuel stabilizer is  
an acceptable alternative in minimizing the  
formation of fuel gum deposits during stor-  
age. Add stabilizer to the gasoline in the fuel  
tank or fuel storage container. Follow the mix  
instructions found on stabilizer containers.  
Run engine at least 5 minutes after adding  
stabilizer.  
S Remove spark plug and pour 1 teaspoon  
of 40:1, 2-cycle engine oil (air cooled)  
through the spark plug opening. Slowly  
pull the starter rope 8 to 10 times to distrib-  
ute oil.  
S Replace spark plug with new one of rec-  
ommended type and heat range.  
S Clean air filter.  
S Check entire unit for loose screws, nuts,  
and bolts. Replace any damaged, broken,  
or worn parts.  
S At the beginning of the next season, use  
only fresh fuel having the proper gasoline  
to oil ratio.  
HELPFUL TIP  
During storage of your gas/  
oil mixture, the oil will sepa-  
rate from the gas.  
We recommend that you  
shake the gas can weekly  
to insure proper blending of  
the gas and oil.  
OTHER  
S Do not store gasoline from one season to  
another.  
S Replace your gasoline can if it starts to  
rust.  
TROUBLESHOOTING TABLE  
WARNING: Always stop unit and disconnect spark plug before performing all of  
the recommended remedies below except remedies that require operation of the unit.  
TROUBLE  
CAUSE  
REMEDY  
Engine will not  
start or will run  
only a few  
seconds after  
starting.  
1. Move ignition switch to ON.  
2. See “Difficult Starting” in  
Operation Section.  
1. Ignition switch off.  
2. Engine flooded.  
3. Fill tank with correct fuel mixture.  
4. Install new spark plug.  
3. Fuel tank empty.  
4. Spark plug not firing.  
5. Fuel not reaching  
carburetor.  
5. Check for dirty fuel filter; replace.  
Check for kinked or split fuel line;  
repair or replace.  
1. Idle speed requires  
adjustment.  
2. Carburetor requires  
adjustment.  
Engine will  
not idle  
properly.  
1. See “Carburetor Adjustment” in the  
Service and Adjustments Section.  
2. Contact an authorized service dealer.  
1. Clean or replace air filter.  
Engine will not  
accelerate,  
lacks power,  
or dies under  
a load.  
1. Air filter dirty.  
2. Clean or replace plug and regap.  
3. Disengage chain brake.  
2. Spark plug fouled.  
3. Chain brake engaged.  
4. Carburetor requires  
adjustment.  
4. Contact an authorized service dealer.  
Engine  
1. Too much oil mixed with  
gasoline.  
1. Empty fuel tank and refill with  
correct fuel mixture.  
smokes  
excessively.  
1. Idle speed requires  
adjustment.  
2. Clutch requires repair.  
1. See “Carburetor Adjustment” in the  
Service and Adjustments Section.  
2. Contact an authorized service dealer.  
Chain moves  
at idle speed.  
18  
 
LIMITED WARRANTY  
McCulloch, a division of Husqvarna Con-  
McCulloch, a division of Husqvarna  
Consumer Outdoor Products N.A., Inc.  
9335 Harris Corners  
sumer Outdoor Products N.A., Inc., war-  
rants tothe originalconsumer purchaser that  
each new McCulloch brand gasoline chain  
saw is free from defects in material and  
workmanship andagrees torepair or replace  
under this warranty any defective gasoline  
chain saw as follows from the original date of  
purchase.  
Charlotte, NC 28269  
1--800--554--6723 In Canada, contact:  
McCulloch  
850 Matheson Blvd. West  
Mississauga, Ontario L5V 0B4  
Giving the model number, serial number and  
date of purchase of your product and the  
name and address of the authorized dealer  
from whom it was purchased.  
THIS WARRANTY GIVES YOU SPECIFIC  
LEGAL RIGHTS, AND YOU MAY HAVE  
OTHER RIGHTS WHICH VARY FROM  
STATE TO STATE.  
2 YEARS - Parts and Labor, when used for  
household purposes.  
60 DAYS - Parts and Labor, when used for  
commercial, professional, or income pro-  
ducing purposes.  
30 DAYS - Parts andLabor, if used for rental  
purposes.  
This warranty is not transferable and does  
not cover damage or liability caused by im-  
proper handling, improper maintenance or  
alteration, or the use of accessories and/or  
attachments not specifically recommended  
by McCulloch for this chain saw. This war-  
ranty does not cover tune--up, spark plugs,  
filters, starter ropes, chain sharpening, bars,  
chains, and other parts which wear and re-  
quire replacement with reasonable use dur-  
ing the warranty period. This warranty does  
not cover predelivery setup, installation of  
guide bar and chain, and normal adjust-  
ments explained in the instruction manual  
such as chain tension adjustments. This  
warranty does not cover transportation  
costs.  
NO CLAIMS FOR CONSEQUENTIAL OR  
OTHER DAMAGES WILL BE ALLOWED,  
AND THERE ARE NO OTHER EXPRESS  
WARRANTIES EXCEPT THOSE EX-  
PRESSLY STIPULATED HEREIN.  
SOME STATES DO NOT ALLOW LIMITA-  
TIONS ON HOW LONG AN IMPLIEDWAR-  
RANTY LASTS OR THE EXCLUSION OR  
LIMITATIONS OF INCIDENTAL OR CON-  
SEQUENTIAL DAMAGES, SO THE  
ABOVE LIMITATIONS OR EXCLUSION  
MAY NOT APPLY TO YOU.  
This is a limited warranty within the meaning  
of that term as defined in the Magnuson--  
Moss Act of 1975.  
The policy of McCulloch is to continuously  
improve its products. Therefore, McCulloch  
reserves the right to change, modify, or dis-  
continue models, designs, specifications,  
and accessories of all products at any time  
without notice or obligation to any purchaser.  
In the event you have a claim under this war-  
ranty, you must return the product to an au-  
thorized service dealer.  
Should you have any unansweredquestions  
concerning this warranty, please contact:  
U.S. EPA/CALIFORNIA/ENVIRONMENT CANADA  
EMISSION CONTROL WARRANTY STATEMENT  
YOUR WARRANTY RIGHTS AND OB-  
LIGATIONS: The U.S. Environmental  
Protection Agency, California Air Resources  
Board, Environment Canada and McCulloch  
are pleased to explain the emissions control  
system warranty on your year 2010 and later  
small off--road engine. In California, all small  
off--road engines must be designed, built, and  
equipped to meet the State’s stringent anti--  
smog standards. McCulloch must warrant  
the emission control system on your small  
off--road engine for the periods of time listed  
below provided there has been no abuse,  
neglect, or improper maintenance of your  
small off--road engine. Your emission control  
system includes parts such as the carburetor,  
the ignition system and the fuel tank. Where a  
warrantable condition exists, McCulloch will  
repair your small off--road engine at no cost  
to you. Expenses covered under warranty  
include diagnosis, parts and labor.  
MANUFACTURER’S WARRANTY COV-  
ERAGE: If any emissions related part on  
your engine (as listed under Emissions  
Control Warranty Parts List) is defective or a  
defect in the materials or workmanship of the  
engine causes the failure of such an emission  
related part, the part will be repaired or re-  
placed by McCulloch. OWNER’S WARRAN-  
TY RESPONSIBILITIES: As the small off--  
road engine owner, you are responsible for  
the performance of the required mainte-  
nance listed in your instruction manual.  
McCulloch recommends that you retain all  
receipts covering maintenance on your  
small off--road engine, but McCullochcannot  
deny warranty solely for the lack of receipts  
or for your failure to ensure the performance  
of all scheduled maintenance. As the small  
off--road engine owner, you should be aware  
that McCulloch may deny you warranty cov-  
erage if your small off--road engine or a part  
of it has failed due to abuse, neglect, improp-  
er maintenance, unapproved modifications,  
or the use of parts not made or approved by  
the original equipment manufacturer. You are  
responsible for presenting your small off--road  
engine to an McCulloch authorized repair cen-  
19  
 
ter as soon as a problem exists. Warranty re-  
pairs should be completed in a reasonable  
amount of time, not to exceed 30 days. If you  
have any questions regarding your warranty  
rights and responsibilities, you should contact  
your nearest authorized service center, call  
McCulloch at 1--800--554--6723, or send e-mail  
correspondence to emission.warranty@  
HCOP--emission.com. WARRANTY COM-  
MENCEMENT DATE: The warranty period  
begins on the date the small off--road engine  
is purchased. LENGTH OF COVERAGE:  
This warranty shall be for a period of two  
years from the initial date of purchase, or un-  
tiltheend of theproduct warranty (whichever  
is longer). WHAT IS COVERED: REPAIR  
OR REPLACEMENT OF PARTS. Repair or  
replacement of any warranted part will be  
performed at no charge to the owner at an  
approved McCulloch servicing center. If you  
have any questions regarding your warranty  
rights and responsibilities, you should contact  
your nearest authorized service center, call  
McCulloch at 1--800--554--6723, or send e-mail  
correspondence to emission.warranty@  
HCOP--emission.com. WARRANTY PE-  
RIOD: Any warranted part which is not  
scheduled for replacement as required  
maintenance, or which is scheduled only for  
regular inspection to the effect of “repair or  
replace as necessary” shall be warranted for  
2 years. Any warranted part which is sched-  
uled for replacement as required mainte-  
nance shall be warranted for the period of  
time up to the first scheduled replacement  
point for that part. DIAGNOSIS: The owner  
shall not be charged for diagnostic labor  
which leads to the determination that a war-  
ranted part is defective if the diagnostic work  
is performed at an approved McCulloch  
servicing center.  
CONSEQUENTIAL DAMAGES: McCul-  
loch may be liable for damages to other en-  
gine components caused by the failure of a  
warranted part still under warranty. WHATIS  
NOT COVERED: All failures caused by  
abuse, neglect, or improper maintenance  
are not covered. ADD -ON OR MODIFIED  
PARTS: The useof add--on or modifiedparts  
can be grounds for disallowing a warranty  
claim. McCulloch is not liable to cover fail-  
ures of warranted parts caused by the use of  
add--on or modified parts. HOW TO FILE A  
CLAIM: If you have any questions regarding  
your warranty rights and responsibilities,  
you should contact your nearest authorized  
service center, call McCulloch at  
1--800--554--6723, or send e-mail corre-  
spondence to emission.warranty@HCOP--  
emission.com. WHERE TO GET WARRAN-  
TY SERVICE: Warranty services or repairs  
shall be provided at all McCulloch service cen-  
ters. Call: 1--800--554--6723 or send e-mail cor-  
respondence to emission.warranty@HCOP--  
emission.com. MAINTENANCE, REPLACE-  
MENT AND REPAIR OF EMISSION RE-  
LATED PARTS: Any McCulloch approved  
replacement part used in the performance of  
any warranty maintenance or repair onemis-  
sion related parts will be provided without  
charge to the owner if the part is under war-  
ranty. EMISSION CONTROL WARRANTY  
PARTS LIST: Carburetor, air filter (covered up  
to maintenance schedule), ignition system:  
spark plug (covered up to maintenance sched-  
ule), ignition module, muffler including catalyst  
(if equipped), fuel tank. MAINTENANCE  
STATEMENT: The owner is responsible for  
the performance of all required maintenance  
as defined in the instruction manual.  
The information on the product label indicates which standard your engine is certified.  
Example: (Year) EPA and/or CALIFORNIA.  
This engine is certified to be emissions compliant for the following use:  
Moderate (50 hours)  
Intermediate (125 hours)  
Extended (300 hours)  
20  
 

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