Cleaning the air filter, Carburetor Adjustment

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 can 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 filter 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

4.Locate the 2 outlet cover screws on the muffler. Loosen and remove both screws.

5.Remove the outlet cover.

Outlet Cover	BACK VIEW OF
	MUFFLER
	Muffler
Screws
Spark Arresting
Screen

6.Remove spark arresting screen.

7.Clean the spark arresting screen with a wire brush. Replace screen if any wires are broken or screen is blocked after cleaning.

8.Reinstall spark arresting screen.

9.Reinstall outlet cover and 2 screws. En- sure outlet cover and both screws are re- installed correctly (see illustrations) to prevent damage to the saw. The ex- haust outlet must face the chain brake (bar side) of the saw.

Air Filter	Cover
	Cover
	Screws
	Cylinder
	Cover

Exhaust

Outlet

Outlet Cover

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 ARREST- ING SCREEN

Cleaning is required every 25 hours of op- eration or annually, whichever comes first.

Outlet

Guide

Muffler

BackplateBolts

Muffler

Gasket

Bolt Cover Locknut

1.Loosen and remove the locknut from the bolt cover.

2.Remove the bolt cover.

3.Loosen and remove the 2 muffler bolts. Remove the muffler, muffler gasket, out- let guide and backplate. Notice the ori- entation of these parts for reassembling.

Exhaust Outlet must face chain brake (bar side) of chain saw

10.Inspect the muffler gasket and replace if damaged.

11.Reinstall backplate, outlet guide, muffler gasket, and muffler using muffler bolts. Tighten until secure.

12.Reinstall bolt cover and locknut. Tighten securely.

CARBURETOR ADJUSTMENT

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:

SChain moves at idle. See IDLE SPEED--T adjusting procedure.

SSaw 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.

STurn idle speed screw (T) clockwise to in- crease engine speed.

STurn idle speed screw (T) counterclock-

wise to decrease engine speed.

If you require further assistance or are unsure about performing this procedure, contact your

BH 2660 specifications

The Poulan BH 2660 is a versatile and efficient piece of equipment designed for homeowners and professional landscapers alike. Known for its power and durability, this blower and vacuum combination is perfect for various yard work tasks, ensuring your outdoor space remains pristine throughout the seasons.

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Poulan BH 2660 Cleaning the air filter, Inspect Muffler and Spark Arresting Screen, Idle Speed-T

Models: BH 2660