Poulan 2750 - Manual (Page 14)

14
MAINTENANCE SCHEDULE
Lubricate bar
sprocket hole After each use . . . . . . .
Check:
Fuel mixture level Before each use . . . .
Bar lubrication Before each use . . . . . . .
Chain tension Before each use . . . . . . .
Chain sharpness Before each use . . . .
For damaged parts Before each use . .
For loose caps Before each use . . . . . .
For loose fasteners Before each use . . .
For 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 . . .
* Hours of Operation
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 every
5 hours of operation.
S
Clean the cover and the 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 the filter in soap and water. Rinse in
clean cool water. Air dry completely before
reinstalling.
S Reinstall parts.
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
S Loosen and remove the 3 cylinder cover
screws. Remove the cylinder cover.
S Pull off the spark plug boot.
S Loosen and remove the locknut from the
bolt cover. Remove the bolt cover.
S Loosen and remove the 2 muffler bolts.
Remove the muffler, muffler gasket and
backplates. Notice the orientation of these
parts for reassembling.
S Locate the 2 outlet cover screws on the
muffler. Loosen and remove both screws.
Remove the outlet cover and spark arrest-
ing screen.
Outlet Cover
Spark Arresting
Screen
Screws
Muffler
BACK VIEW OF MUFFLER
S Clean the spark arresting screen with a
wire brush. Replace screen if any wires
are broken or screen is blocked after
cleaning.
S Reinstall spark arresting screen.
S 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
S Inspect the muffler gasket and replace if
damaged.
S Reinstall backplates, muffler gasket and
muffler using muffler bolts. TIghten until
secure.
S Reinstall bolt cover and locknut.
S Reinstall the spark plug boot.
S Reinstall the cylinder cover and 3 screws.
Tighten securely.