Bolens No. 247.770550 Carburetor Adjustment, Engine Speed, Removing the Flail Screen

SERVICE AND ADJUSTMENTS

WARNING: Do not at any time make any adjustment to the unit without first stopping engine and disconnecting spark plug wire.

Nozzle Height Adjustment

The nozzle can be adjusted to any six positions, ranging from 5/8” to 4 1/8” ground clearance. The nozzle height has to be adjusted according to the conditions. Move the height adjustment levers forward or backward to adjust the nozzle upwards or downwards. See Figure 14.

NOTE: In general, raise the nozzle height to vacuum a thick layer of leaves or to operate with the blower chute and lower the nozzle height for smoother surfaces.

	Nozzle Height
Nozzle	Adjustment
	Lever

Figure 14

CARBURETOR ADJUSTMENT

WARNING: If any adjustments (e.g. carburetor) are made to the engine while the engine is running, keep clear of all moving parts. Be careful of heated surfaces and muffler.

The carburetor has been pre-set at the factory and should not require adjustment. If your engine does not operate properly due to suspected carburetor problems, take your Yard Vacuum to a Sears Service Center for repair and adjustment.

ENGINE SPEED

The engine speed on your Yard Vacuum has been set at the factory. Do not attempt to increase the engine RPM. If you think that the engine is running too fast or too slow, take your Yard Vacuum to the nearest Sears Service Center for repair and adjust- ment.

WARNING: Do not attempt to alter the engine speed by tampering with the engine’s governor linkage. Doing so could result in serious personal injury and damage to the engine. The engine RPM has been set at the factory.

REMOVING THE FLAIL SCREEN

If the discharge area becomes clogged, remove the flail screen and clean area as follows.

•Stop the engine. Make certain the chipper shredder vacuum has come to a complete stop.

•Disconnect and ground the spark plug wire before unclogging the discharge chute.

•Remove the vacuum bag or blower chute from the unit as instructed in the OPERATION section to obtain access to flail screen. See Figure 15.

Hex Screw & Flat Washer
Lock Nut	Flail Screen
	REAR VIEW

Figure 15

•Remove hex screw on right side of unit that attaches to the flail screen. See Figure 16.

Remove

Hex Screw

Figure 16

•Remove hex screw and flat washer on top of rear housing near mounting bracket and the lock nut that secures flail screen. See Figure 15.

•Remove and clean the screen by scraping or washing with water. Reinstall the screen.

14