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13
SERVICE AND ADJUSTMENTS
WARNING: Disconnect t he spark
plugbeforeperformingmaintenance,except
for carburetor adjustments.
Werecommendallserviceand adjus tments
not listedin this manual beperformed by an
Authorized Service Dealer.
MAINTENANCE SCHEDULE
Check:
Fuel mixture level Before each use....
Bar lubrication Before each use.......
Chain tension Before each use.......
Chain sharpness Beforeeach use....
For damaged parts Before each use..
For l oose caps Before each use......
For loose fasteners Before each use...
Fo r 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...
*HoursofOperation
AIR FILTER
CAUTION: Do notcleanfilter in gaso-
line or other flammable solvent to avoid
creating a fire hazard or producing harmful
evaporative emissions.
Cleaning th e air filter:
A dirty air filter decreases engine perform-
ance and increases fuel consumption and
harmfulemissions. A lwayscleanafterevery
5 hours of operation.
1. Loosen 3 screws on cylinder cover.
2. Remove cylinder cover.
3. Remove air filter.
4. Cleantheairfilterusinghotsoapywater .
Rinsewithcleancoolwater. Airdrycom-
pletely before reinstalling.
5. Reinstall air filt er.
6. Reinstall cylinder cover and 3 screws.
TIghten securely.
Air Filter
Air Filter
Screws
BAR MAINTENANCE
Ifyoursaw cutstooneside,hasto beforced
throughthecut,orbeenrunwithanimproper
amount of bar lubrication it may be neces-
sary to service your bar.
Awornbarwilldamageyourchainandmake
cutting difficult.
After each use, ensure ON/STOP switch is
intheSTOP position, thencleanallsawdust
from the guide bar and sprocket hole.
To maintain 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 Cleantheoilholes a ndbargrooveaftereach
5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S Burring of guide bar rails is a nor m al
process of rail wear. Remove t hese burrs
with a flat file.
S Whenrailtopisuneven,useaflatfiletor e-
store square edges andsides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square
Replaceguidebar w henthegroove isworn,
the guide bar is bent or cracked, or when
excess heatingorburringoftherailsoccurs.
Ifreplacement i snecessary ,useonly t heguide
barspecifiedforyoursawintherepai rpartslist
or on the decal located on the chain saw .
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better. Ignition timing isfixed andnon-
adjustable.
1. Loosen 3 screws on cylinder cover.
2. Remove t he 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 and tighten securely with a 19 mm
socket wrench. Spark plug gap should
be 0,5 mm.
6. Reinstall the spark plug boot .
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
Spark Plug