Poulan 2750 Manual De Instrucciones página 14

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 c_eaned. 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.
v
AirFilt
, _ ,';_;' _ er
"_'-_, 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.
Steel
Backplate
Muffler
Muffler
Bolts
Aluminum _ /'/
Backplate Muffler
Gasket
Bolt Cover Locknut
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 Iocknut from the
bolt cover. Remove the bolt cover.
4. Loosen and remove the 2 muffler bolts.
Remove the muffler, muffler gasket and
backplates. Notice the orientation of
these parts for reassembling.
5. Locate the 2 outIet cover screws on the
muffler. Loosen and remove both
screws. Remove the outlet cover and
spark arresting screen.
BACK VIEW OF MUFFLER
Outlet Cover Muffler
B parskcAr rree.Stin g '_,,_'
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
reinstalled correctly to prevent damage
to the saw (see illustrations). The ex-
haust outlets must face the chain brake
(bar side) of the saw.
tlet 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 Iocknut.
12. Reinstall the spark plug boot.
13. Reinstall the cylinder cover and 3
screws. Tighten securely.
CARBURETOR ADJUSTMENTS
Your carburetor is equipped with limiter
caps. Carburetor adjustment is a compli-
cated task. We recommend that you take
your unit to an authorized service dealer.
Damage will occur ifyou turn the needles be-
yond the limiter stops.
BAR MAINTENANCE
If your saw cuts to one side. has to be forced
through the cut, or been run with an improper
amount of bar lubrication it may be neces-
sary to service your bar. A worn bar will dam-
age your chain and make cutting difficult.
After each use. ensure ON/STOP switch is
in the STOP position, then clean ali sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
• Move ON/STO P switch to the STOP posi-
tion.
• Loosen and remove chain brake nuts and
chain brake. Remove bar and chain from
saw.
• Clean the oil holes and bar groove affer each
5 hours of operation.
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