MAINTENANCE AND REPAIR INSTRUCTIONS

4.Apply enough clean SAE 30 oil to lightly coat the filter (Fig. 35).

5.Squeeze the filter to spread and remove excess oil (Fig. 36).

CARBURETOR ADJUSTMENT

The idle speed of the engine is adjustable through the air filter/ muffler cover (Fig. 38).

Idle Speed Screw

Fig. 35

 

 

 

Fig. 36

 

 

 

 

 

 

 

 

6.Replace the air filter inside the air filter/muffler cover (Fig. 33).

NOTE: Operating the unit without the air filter and air filter/ muffler cover assembly will VOID the warranty.

Reinstalling the Air Filter/Muffler Cover

1.Place the air filter/muffler cover over the back of the carburetor and muffler. Align the screw holes.

2.Insert the four (4) screws into the holes in the air filter/muffler cover (Fig. 32) and tighten. Do not over tighten.

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. 37). Remove the screw using either a torx #20 or flat blade screwdriver.

Engine

Fig. 38

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

Check Gasoline Mixture

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

Refer to Oil and Gasoline Information.

Clean Air Filter

Spark Arrestor

HoodSlots

Screw

 

Spark Arrestor

Muffler

Tabs

 

Screen

 

 

 

 

 

 

 

 

 

 

 

Fig. 37

 

 

 

 

 

 

 

 

 

 

 

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.

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/gasoline 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 gasoline 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.

2.Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips or flat blade screwdriver into the hole in the air filter/muffler cover (Fig. 38). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly.

NOTE: The cutting attachment should not rotate when the engine idles.

3.If the cutting attachment rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed.

Checking the gasoline mixture, cleaning the air filter, and adjusting the idle speed should solve most engine problems. If not and all of the following are true:

•the engine will not idle

•the engine hesitates or stalls on acceleration

•there is a loss of engine power

Have the carburetor adjusted by an authorized service dealer.

WARNING: The cutting attachment may spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

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