Walker MDD (20.9 HP) manual 80

Maintenance Instructions	REPLACING/REPAIRING
Blower Wheel Installation	GHS Blower Assembly Installation
1. To install the blower wheel, reverse the remov-	Reinstall the blower assembly into the mower using
al procedures. The front bearing is mounted	the reverse procedures of GHS Blower Assembly
on the blower wheel shaft, secured by a locking	Removal.
collar. Drive the locking collar clockwise with a	Replacing Fuel Valve Solenoid
punch, and tighten the set screw.
2. Press blower wheel and front bearing into the	For checking operation of the solenoid, refer to
blower housing. Use Loctite® RC/680 retaining	CHECKING/SERVICING the Fuel Valve Solenoid
compound on the outer bearing race and inside	in this section. To replace the solenoid:
the bearing housing.	1. Remove the engine air intake hose for access
3. Press the rear bearing into place, using Loctite®
	to the solenoid.
on both the outer bearing race and the housing.	2. Disconnect the electrical plug, remove the two
4. Install the locking collar on the rear bearing and	(2) mounting bolts and the cotter pin on the link-
install the blower pulley to complete the blower	age, then remove the solenoid.
assembly. Torque the blower pulley set screws	3. Unscrew the linkage rod out of the old solenoid
to 250 in-lb (28.3 N·m).
	and reinstall in the new solenoid. Leave the jam
	nut on the linkage rod loose.

								Blower Pulley
			Bearing (3/4)
										5/16-18 x 5/8 SQH
											Set Screw
	Bearing (3/4)
											5/16-18 x 3/4 SQH
											Set Screw
									3/16 x 3/16 x 1 Key
Face Plate
								1/4-20 x 3/8
								Set Screw
						Housing
					1/4-20 x 3/8
					Set Screw
				Blower Wheel
						7/16-14 Hex Nut
		5/16-18 Whiz Locknut
		Skid Bar					7/16 Split Lock Washer

Intake Tube

			5/16-18 x 3/4 Hex Bolt
3/8-16 x 1 Hex Bolt
		7/16-14 x 1-1/4 Hex Bolt
3/8-16 Keps Nut
	GHS Blower Components

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