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Exhaust Outlet must face chain
brake ( bar side) of chain saw
Outlet Co
v
er
Exhaust
Outlet
10. Inspect the muf fler gasket and r eplace if
damaged.
11. Reinstall backplate, outlet guide,muffler
gasket, and muffler using muffler bolts.
Tighten until secure.
12. Reinstall bo ltcover andlocknut. Tighten
securely.
CARBURETOR ADJUSTMENT
WARNING: The chain will be mov-
ing during most of thisprocedure. Wearyour
protective equipment and observe all safety
precautions. Thechain m ustnotmove atidle
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 a t idle. See IDLE SPEED--T
adjusting procedure.
S Saw will not idle. S eeIDLE SPEED--T ad-
justing procedure.
Idle Speed--T
Allow engine to idle. If t he chain moves, idle
istoofast. Iftheenginestalls,idleis tooslow.
Adjust speed until engine r uns without chain
movement (idle too fast) or stalling (idle too
slow). The idlespeed screw is locatedin the
area above the primer bulb and is labeled T.
S Turn idle speed screw (T) clockwise to in-
crease engine speed.
S Turn idle speed screw ( T) counterclock-
wise to decrease engine speed.
If you require further assistance or are unsure
about performing this procedure, contact your
authorized service dealer or call
1--800--554--6723.
BAR MAINTENANCE
If your saw cuts to oneside, has tobe forced
through thecut, o rbeenrunwithanimproper
amount of bar lubrication it may be neces-
sarytoserviceyourbar . Awornbar willdam -
age your chain and make cutting difficult.
After each use, ensure ON/STOP switch is
in the S TOP position, thenclean allsawdust
from the guide bar and sprocket hole.
To m aintain guide bar:
S Move ON/STOP switch to the STOP posi-
tion.
S Loosen and remove chain brake nuts and
chain brake. Remove bar and chain from
saw.
S Clean the oil holes and bar groove after
each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S Burring of guide bar rails is a normal
process of r ail wear. Remove t hese burrs
with a flat file.
S When railtopis uneven, useaflat filetore-
store square edges and sides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square
Replace guide bar when the groove is worn,
the guide bar i s bent or cracked, orwhen exce-
ss heating or burring of the rails occurs. If re-
placement is necessary, u se only the guidebar
specified f or your saw i n t he repair parts list or
on the decal located on the chain saw.
CHAIN SHARPENING
Chain sharpening is a complicated task that
requires special tools. We recommended
you refer chain sharpening to a p rofessional
chain sharpener .
IGNITION TIMING
Ignition tim ing is fixed and nonadjustable.
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better.
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.
5. Replace with Champion RCJ--7Y spark
plug andtighten securely with a 3/4 inch
(19 mm) socket wrench. Spark plug gap
should be 0.025 inch (0.6 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
Screws
Spark
Plug Boot
Spark
Plug
Cylinder
Cover