MAINTENANCE AND REPAIR INSTRUCTIONS

SPARK ARRESTOR MAINTENANCE

1.Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover.

2.Locate the muffler, but do not remove it. Find the screw on the bottom of the muffler (Fig. 29). Remove the screw using either a torx #20 or flat blade screwdriver.

3.Carefully pry up the left side spark arrestor hood. Two tabs act as hinges on the right side of the hood. Flip open the spark arrestor hood like a door and then pull its tabs out of the muffler slots.

4.Using a small flat blade screwdriver, carefully pry the spark arrestor screen out from the inside of the spark arrestor hood.

5.Clean the spark arrestor screen with a wire brush. Replace it if it is damaged, or if you are unable to clean it thoroughly.

6.Reinstall the spark arrestor screen snugly back into the spark arrestor hood.

7.Reinstall the two hood tabs into the two muffler slots and flip the spark arrestor hood closed.

8.Replace the screw you removed in Step 2 and tighten it securely.

9.Reinstall the air filter/muffler cover.

CARBURETOR ADJUSTMENT

The idle speed of the engine is adjustable through the air filter/muffler cover (Fig. 30).

NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments.

Check Fuel Mixture

Old and/or improperly mixed fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh, properly-mixed fuel prior to making any adjustments. Refer to Oil and Fuel Information.

Clean Air Filter

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and change the air/fuel mixture. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.

Adjust Idle Speed Screw

If, after checking the fuel mixture and cleaning the air filter, the engine still will not idle, adjust the idle speed screw as follows:

1.Start the engine and let it run at a high idle for a minute to warm up. Refer to Starting/Stopping Instructions.

WARNING: If the spark arrestor hood and spark

arrestor screen are not tightened securely, they could fall off causing damage to the unit and possible serious personal injury.

Engine

Spark Arrestor

HoodSlots

Screw

Tabs

Spark Arrestor

Muffler

 

Screen

 

 

 

 

 

 

 

 

 

Fig. 29

 

 

 

 

 

 

 

 

 

 

 

WARNING: The cutting attachment may spin

during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

Idle Speed Screw

Fig. 30

15