Poulan 2550T Manual De Instrucciones página 14

MAINTENANCE SCHEDULE
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 -
Each hour of operation is approximately
2 tanks of fuel.
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 10
tanks of fuel or 5 hours of operation, which-
ever comes first. Clean more frequently in
dusty conditions. A used aire filter cat: 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 ffter using hot soapy water.
Rinse with clean cool water. Air dry com-
pletely before reinstalling.
5. Lightly oil air filter before installing to im-
prove the efficiency of air filter. Use
2-cycle engine oil or motor oil (SAE 30).
Squeeze excess oil from filter.
6. Reinstall air filter.
7. Reinstall cylinder cover and 3 screws.
Tighten securely.
.... /-_,_-- Cylinder
Air t-Hter f_ _'f ...... Cover
CX* :crews
I_'N _'_l/V_<" Cylinder
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 afire
hazard or affecting engine performance.
Replace the spark arresting screen if breaks
OCCUr.
M uffler Diffuser
Spark
Arresting
I. 2" Z IIr,.,':_,'_'_. /L _/Screen
_, _k,,,/./'_1 i_ /:._b / I /.. Muffler
"
Cover
_,___ Sor;s
Body Cove n-_'" _ - r
Cleaning is required every 25 hours of opera-
tion or annually, whichever comes first.
1. Loosen and remove the 2 muffler cover
screws.
2. Remove the muffler cover (cover snaps off
muffler body).
3. Remove muffler diffuser and spark arrest-
ing screen assembly. Notice the orientation
of these parts for reassembling.
4. Cleat: the spark arrestor screen with a wire
brush. Replace screen if breaks are found.
5. Replace any broken or cracked muffler
parts.
6. Reinstall diffuser and spark arrestor screen
assembly with round holes facing up.
7. Reinstall muffler cover and 2 screws.
Tighten securely.
CARBURETOR ADJUSTMENT
_l_ 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:
• Chain moves at idle. See iDLE SPEED-T
adjusting procedure.
• 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 (idte too fast) or stalling (idle too
slow). The idle speed screw is located in the
area above the primer bulb and is labeled T.
• Turn idle speed screw (T) clockwise to in-
crease engine speed.
• Turn idle speed screw (T) counterclock-
wise to decrease engine speed.
If you require further assistance or are unsure
about performing this procedure, contact your
authorized service dealer or catl
1-800-554-6723.
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 necessary
to service your bar. A worn bar will damage
your chain and make cutting difficult.
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