Poulan 545186803 - Manual (Page 15)

15
AIR FILTER
CAUTION : Do not clean filter in gasoline
or other flammable solvent to avoid creating
a fire hazard or producing harmful evapora-
tive emissions.
Cleaning the air filter:
A dirty air filter decreases engine perform-
ance and increases fuel consumption and
harmful emissions. Always clean after 15
tanks of fuel or 5 hours of operation, which-
ever comes first. Clean more frequently in
dusty conditions. A used aire filter can never
be completely cleaned. It is advisable to re-
place your air filter with a new one after every
50 hours of operation, or annually, whichever
comes first.
1. Loosen 3 screws on cylinder cover.
2. Remove cylinder cover.
3. Remove air filter.
4. Clean the air filter using hot soapy water.
Rinse with clean cool water. Air dry com-
pletely before reinstalling.
5. Reinstall air filter.
6. Reinstall cylinder cover and 3 screws.
TIghten securely.
Air Filter
Air Filter
Screws
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 to avoid creating a fire
hazard or affecting engine performance.
Replace the spark arresting screen if breaks
occur.
CLEANING THE SPARK
ARRESTING SCREEN
Clean every 25 hours of operation or annually,
whichever comes first.
Muffler
Gasket
Muffler
Bolts
Muffler
Locknut
Steel
Backplate
Bolt Cover
Aluminum
Backplate
1. Loosen and remove the 3 cylinder cover
screws. Remove the cylinder cover.
2. Pull off the spark plug boot.
3. Loosen and remove the locknut from the
bolt cover. Remove the bolt cover.
4. Loosen and remove the 2 muffler bolts.
Remove the muffler and backplates. No-
tice the orientation of these parts for re-
assembling.
5. Locate the 2 outlet cover screws on the
muffler. Loosen and remove both
screws. Remove the outlet cover and
spark arresting screen.
Outlet Cover
Spark Arresting
Screen
Screws
Muffler
BACK VIEW OF MUFFLER
6. Clean the spark arresting screen with a
wire brush. Replace screen if any wires
are broken or screen is blocked after
cleaning.
7. Reinstall spark arresting screen.
8. Reinstall outlet cover and 2 screws. En-
sure outlet cover and both screws are re-
installed correctly to prevent damage to
the saw (see illustrations). The exhaust
outlets must face the chain brake (bar
side) of the saw.
Outlet Cover
Exhaust Outlets
Exhaust Outlets must face
chain brake (bar side) of chain saw
9. Inspect the muffler gasket and replace if
damaged.
10. Reinstall backplates, muffler gasket and
muffler using muffler bolts. TIghten until
secure.
11. Reinstall bolt cover and locknut.
12. Reinstall the spark plug boot.
13. Reinstall the cylinder cover and 3
screws. Tighten securely.
CARBURETOR ADJUSTMENTS
WARNING: The chain will be mov-
ing during most of this procedure. Wear your
protective equipment and observe all safety
precautions. The chain must not move at idle
speed.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if
you notice any of the following conditions:
S
Chain moves at idle. See IDLE SPEED--T
adjusting procedure.
S Saw will not idle. See IDLE SPEED--T ad-
justing procedure.
Idle Speed--T
Allow engine to idle. If the chain moves, idle
is too fast. If the engine stalls, idle is too slow.
Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow).
S
Turn idle speed screw (T) clockwise to in-
crease engine speed.