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15
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 o f rail wear . Remove these burrs
with a flat file.
S Whenrailtopisuneven,useaflatfiletore-
store square edges and sides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square
Replace guide bar when the groove i s worn,
the guide bar is bent or cracked, or w hen ex-
cess heatingor burringof therails occurs.Ifre-
placementis necessary,useonlytheguidebar
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-
ERA TION section.
LUBRICATION
Bar Oil
Fill Cap
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 milddeter-
gent.
S Wipe off unit with a clean dry cloth.
CHECK CHAIN BRAKE
See CHAIN BRAKE in the OPERATION
section.
CLEAN AIR FILTER
CAUTION:
Donotcleanfilteringasolineor
other flammable solvent to avoid creating a
firehazardo rp roducingharmfulevaporative
emissions.
Cleaning the air filter:
Adirtyair filterdecreases thelifeand perfor-
mance oftheengineandincreases fuelcon-
sumption and harmful emissions. Always
clean your air filter after 10 tanks of fuelor 5
hours of oper ation, whichever comes first.
Cleanmorefrequently industy conditions.A
used air filter can never be completely
cleaned. Itis advisable toreplaceyour airfil-
terwithanewoneafterevery 50hoursofop-
eration, or annu ally, whichever comes first.
1. Loosen 3 screws on cylinder cover.
2. Remove cylinder cover .
3. Remove air filter cover and air filter.
4. Cleantheairfilterusinghotsoapywater.
Rinsewithcleancoolwater.Airdrycom-
pletely before reinstalling.
5. Reinstall air filter and air filter cover.
6. Reinstall c ylinder c over and 3 screws.
Tighten securely.
Air Filter
Cover
Cylinder
Cover
Air Filter
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As theunit isused, carbondeposits buildup
on t he muffler and spark arresting screen,
andmustberemovedtoavoidcreatingafire
hazard or affecting engine performance.
Replacethespark arrestingscreenifbreaks
occur.
Nut
Exhaust
Outlet
Cover
Muffler
Spark
Arresting
Screen
CLEANING THE SPARK ARREST -
ING SCREEN
Cleaning is required every 25 hours of op-
eration or annually, whichever comes first.
1. Loosenandremovethenut fromtheex-
haust outlet cover.
2. Remove the exhaust oulet cover.
3. Removesparkarrestingscreen.Handle
screen carefully to prevent damage.
4. Cleanthespark 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 nutsecurely .