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13
AIR FILTER
CAUTION
: Do not clean filter in gasoline
or other flammable solvent to avoid c reating
a fire hazard or producing harmful evapora-
tive emissions.
Cleaning the air filter:
A dirty air filter decreases engi ne perform-
ance and increases fuel consumption and
harmful emissions. Always clean after every
5 hours of operation.
S
Clean the cover and t he area around it to
keep dirt and sawdust from falling into the
carburetor chamber when the cover is re-
moved.
S
Remove the parts as illustrated below.
S
Wash t he filter in soap and water.
Air Filter
Cylinder Cover
Screws
Cylinder
Cover
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 toavoid creating afire
hazard or affecting engine performance.
Replace the spark arresting screen if breaks
occur.
Muffler Diffuser
Muffler
Cover
Screws
Muffler
Cover
Muffler
Body
Spark
Arresting
Screen
CLEANING THE SPARK ARREST-
ING 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(cover snapsoff
muffler body).
S
Remove muffler diffuser and spark arrest-
ing screen assembly. Notice the orienta-
tion of these parts for reassembling.
S
Clean the spark ar r esting screen with awire
brush. Replace screen i f breaks are found.
S
Replace any br oken or cracked muf fler
parts.
S
Reinstall diffuser and spark arresting screen
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. C arburetor 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 run with animproper
amount of bar lubrication it may be neces-
sarytoservice yourbar. 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 TOP posi-
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, useaflat file to re-
store square edges and sides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square
Replace gui de barwhen t he 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.