Carburetor Adjustment, Adjusting Carburetor

MAINTENANCE AND REPAIR INSTRUCTIONS

4.Apply enough clean motor oil to lightly coat the filter (Fig. 27).

Fig. 27

5.Squeeze the filter to spread and remove excess oil (Fig. 28).

6.Reinstall the filter (Fig. 25) and air filter cover.

NOTE: If the unit is operated without the carburetor/air filter cover assembled, you will VOID the warranty.

Fig. 28

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict the air flow, which upsets the fuel-air mixture in the carburetor. The resulting symptoms are often mistaken for an out-of-adjustment carburetor. Therefore, check the condition of the air filter before adjusting the carburetor. Refer to Air Filter Maintenance.

If the following conditions are experienced, it may be necessary to adjust the carburetor:

•The engine will not idle

•The engine hesitates or stalls on acceleration

•A loss of engine power that is not corrected by new fuel or cleaning the air filter and muffler

NOTE: Warm up the engine for 30-60 seconds before adjusting the carburetor.

Adjusting Carburetor

1.Clean the air filter if it is dirty. Refer to Air

Filter Maintenance.

2.Fill the tank with clean, properly mixed fuel. Refer to Oil and Fuel Information.

3.If the engine stops frequently when idling, turn the idle speed screw clockwise 1/2 turn until the engine stabilizes (Fig. 29).

4.If the cutting head keeps rotating after the trigger is released, turn the idle speed screw counterclockwise 1/2 turn until the head stops rotating (Fig. 29).

NOTE: Careless adjustments can seriously damage your unit. It is recommended that carburetor adjustments be made by an authorized service dealer.

CARBURETOR ADJUSTMENT

This unit is equipped with a diaphragm-type carburetor that has been carefully calibrated at the factory. In most cases, no further adjustment is required

Old or improperly mixed fuel are usually the main reasons for the unit not running properly. Drain and refill the tank with fresh properly mixed fuel prior to doing any adjustments. Refer to Oil and Fuel Information for the proper ratio.

Fig. 29