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Muffler Diffuser
Muffler
Cover
Screws
Muffler
Cover
Muffler
Body
Spark
Arresting
Screen
Cleaning is required every 25 hours of op-
eration o r annually, whichever comes f irst.
S
Loosen and remove the 2 muffler cover
screws.
S
Remove the muffler cover(coversnapsoff
muffler body).
S
Remove muffler diffuser and spark arrest-
ing screen assembly. Notice the orienta-
tion of these parts for reassembling.
S
Clean t he spark arrestor screen with a wire
brush. Replace screen if breaks are found.
S
Replace any br oken or cracked muf fler
parts.
S
Reinstall diffuser and spar k ar r estor scr een
assembly with round hol es facing up.
S
Reinstall muffler cover and 2 screws (7-8
ft/lbs).
CARBURETOR ADJUSTMENTS
Your carburetor is equipped with limiter
caps. Carburetor adjustment is a compli-
cated task. We recommend that you take
your unit to an Authorized Service Dealer.
Damage will occur ifyou turnthe needles be-
yond the limiter stops.
BAR MAINTENANCE
If your saw cuts to one side, hasto beforced
through the cut, orbeen runwith animproper
amount of bar lubrication it may be neces-
sarytoserviceyourbar. A wornbar willdam-
age your chain and make cutting difficult.
After each use, ensure ON/STOP switch is
in the STOP position, then clean all sawdust
from the gui de bar and sprocket hole.
To maintain guide bar:
S
Move ON/STOP switch to the S TOPposi-
tion.
S
Loosen and remove chain brake nut s 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
Sprocket Hole
Oil H oles
S
Add lubricant to sprocket hole after each
use.
S
Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
S
When rail top isuneven, us eaflat file to re-
store square edges and sides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square
Replace gui de barwhen the groove is worn,
the guide bar is bent or cracked, or when
excess heating orburring ofthe rails occurs.
If replacement is necessary, use only the
guide barspecified for your saw in the 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 professional
chain sharpener.
IGNITION TIMING
Ignition timing is fixed and nonadjustable.
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better.
S
Loosen 3 screws on cylinder cover.
S
Remove the cylinder cover.
S
Pull off the spark plug boot.
S
Remove spark plug from cylinder and dis-
card.
S
Replace with Champion RCJ--7Y spark
plug and tighten with a 3/4 inch socket
wrench (10-12 ft/lbs). Spark plug gap
should be 0.025 inches.
S
Reinstall the spark plug boot.
S
Reinstall
the cylinder cover and 3screws (15-20 in/
lbs).
Screws
Spark
Plug Boot
Spark
Plug
Cylinder
Cover
STORAGE
WARNING:
Stop engine and allow
to cool, and secure the unit before storing or
transporting in a vehicle. Store unit and fuel
in an area where fuel vapors cannot reach
sparks or open flames from water heaters,
electric motors or switches, furnaces, etc.
Store unitwithall guards inplace. Position so
that any sharp object cannot accidentally
cause injury to passersby. Store t he unit out
of reach of children.
S
Before storing, drain a ll fuel from the unit.
Start engine and allow to run until it stops.
S
Clean the unit before storing. Pay part icu-
lar attention to the air intake area, keeping
it free of debris. Use a mild detergent and
sponge to clean the plastic surfaces.
S
Donot store theunit orfuel inaclosed area
where fuel vapors can reach sparks or an