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16
CHECK CHAIN BRAKE
See CHAIN BRAKE in the OPERATION
section.
CLEAN AIR FILTER
CAUTION:
Do notclean filterin gasolineor
other flammable solvent to avoid creating a
fire hazardor producing harmful evaporative
emissions.
Cleaning the air filter:
A dirty air filter decreases the life and perfor-
mance of the engineand increases fuelcon-
sumption and harmful emissions. Always
clean your air filter after 10 tanks of fuel or 5
hours of operation, whichever comes f irst.
Clean more frequently in dusty conditions.A
used air filter can never be completely
cleaned. It is advisable to replace your airfil-
ter witha newone afterevery 50hours ofop-
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. Clean theair filterusinghotsoapywater.
Rinsewith cleancool water.Air d rycom-
pletely before reinstalling.
5. Reinstall air filter and air filter cover.
6. Reinstall cylinder cover and 3 screws.
Tighten securely.
Air F ilter
Cover
Cylinder
Cover
Air Filter
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 removedto avoidcreating afire
hazard or a ffecting engine p erformance.
Replacethe spark arresting screen if breaks
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. Loosen and remove the nut from the e x-
haust outlet cover .
2. Remove the e xhaust oulet cover.
3. Removespark a rresting screen.Handle
screen carefully to prevent damage.
4. Clean the spark 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 nut securely.
REPLACE SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better . Ignition timing is fixed and non-
adjustable.
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 and tighten securely with a
3
/
4
inch
(19 mm) socket wrench. Spark pluggap
should be 0.025 inch (0,6 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
Spark
Plug
Cylinder
Cover
Spark
Plug Boot
REPLACE FUEL FILTER
To replace fuel filter, drain your unit by run-
ning it dry of fuel. Remove fuel cap and its
connected retainer from tank. Pull filter from
tank and remove from line. Replace and re-
assemble.
CHAIN ADJUSTMENT
See CHAIN TENSION in ASSEMBLY section.
CHAIN SHARPENING
WARNING: Improper chain sharp-
ening techniques and/or depth gauge mainte-
nance will increase the chance of kickback
which can result in serious injury.