Poulan BH 2160 Manual De Instrucciones página 14

dusty conditions. Aused aire f ilter can n ever
be completely cleaned. Itisadvisable tore-
place your air f ilter with a new one a fter every
50 hours of o peration, or annually, whichever
comes first.
1. Loosen 3screws on cylinder cover.
2. Remove cylinder cover.
3. Remove air f ilter.
4. Clean the a ir f ilter using hot soapy water.
Rinse with c lean cool water. Air d ry c om-
pletely before reinstalling.
5. Lightly oil a ir f ilter before installing toim-
prove the efficiency ofairfilter. U se
2-cycle engine oil ormotor oil ( SAE 30).
Squeeze excess oil f rom filter.
6. Reinstall air f ilter.
7. Reinstall cylinder cover and 3screws.
Tighten securely.
°°ve
"_,_'_'mC _' n dr e r
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.
Muffler Diffuser
//,'/,,,_j% // Spark
_'_'// _/ I Arresting
/ _ /1 L/Screen
_ }./i Muffler
_,,_jl_// C over
Muff,er---
_ Muffler "_ff_.._
Body Cover
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 2 muffler cover
screws.
2. Remove the muffler cover (cover snaps
off muffler body).
3. Remove muffler diffuser and spark ar-
resting screen assembly. Notice the
orientation of these parts for reassem-
bling.
4. Clean the spark arresting screen with a
wire brush. Replace screen if breaks are
found.
5. Replace any broken or cracked muffler
parts.
6. Reinstall diffuser and spark arresting
screen assembly with round holes facing
up.
7. Reinstall muffler cover and 2 screws.
Tighten securely.
CARBURETOR ADJUSTMENT
_i, 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 (idle 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 cail
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 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 all sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
• Move ON/STOP 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 after
each 5 hours of operation.
Remove Sawdust From _ 1_
Guide Bar Groove
Oil Holes
.2-
• Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
• When rail top is uneven, use a flat file to re-
store square edges and sides.
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