Poulan 2150PR, 1975, 2155 Maintenance, AIR Filter, Inspect Muffler and Spark Arresting Screen

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 the Iife and perfor- mance of the engine and increases fuel con- sumption and harmfuI emissions. Always clean your air filter after f O tanks of fuel or 5 hours of operation, whichever comes first Clean more frequently in dusty conditions A used air filter can never be completely cleaned. It is advisable to replace your air fih tar with a new one after every 50 hours of op- eration, or annualIy, whichever comes first.

1.Loosen 3 screws on cylinder cover

2.Remove cylinder cover.

3.Remove air fiIter.

4.Clean the air fiIter using hot soapy water. Rinse with clean cool water. Air dry completely before reinstalling.

5.Ughtiy oil air fiIter before installing to im-

prove the efficiency of air filter Use 2-cycle engine oil or motor oil (SAE 30). Squeeze excess oiI from filter

6.Reinstal_ air filter

7.ReinstalI cylinder cover and 3 screws. Tighten securely.

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

ufflerspark' r2:Diffuserti2g

•, o:v::e:rs

Body

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 Removethe 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.

6Reinstall diffuser and spark arresting screen assembly with round holes fac- ing up.

7Reinstall muffler cover and 2 screws Tighten securely

CARBURETOR ADJUSTMENT

,_& WARNING: Thechainwillbemov-

ingduring 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 carefuIly set at the factory. Adjustments may be necessary if you notice any of the following conditions:

•Chain moves at idle See IDLE SREED-T adjusting procedure.

•Saw wiil not idle See iDLE SPEED-T ad- justing procedure.

Idle Speed-T

AI[ow 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.

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