Poulan 177937 To Adjust Attachment Clutch See Fig, To Replace Motion Drive Belt See Fig

SERVICE AND ADJUSTMENTS

•Check secondary idler arm and idler to see that they rotate freely.

•Be sure spring is hooked in secondary idler arm and sway-bar bracket.

•Install new belt in lower groove of L.H. mandrel pulley, idler pulley, and center mandrel pulley as shown.

•Roll belt over R.H. mandrel pulley. Make sure belt is in all grooves properly.

•Reconnect spring to bolt in mower housing and reinstall R.H. mandrel cover.

•Reinstall mower to tractor (See “INSTALL MOWER AND DRIVE BELT” in the Assembly section of this manual).

•Reassemble mower drive belt (See “TO REPLACE MOWER DRIVE BELT” in this section of this manual).

L.H. MANDREL	MOWER
	BLADE
	DRIVE BELT	CENTER
		MANDREL
		R.H.
		MANDREL
		COVER
		SCREW
SECONDARY
IDLER ARM
SPRING
SWAY BAR	IDLER
BRACKET	PULLEY

FIG. 24

TO ADJUST ATTACHMENT CLUTCH (See Fig. 25)

The electric clutch should provide years of service. The clutch has a built-in brake that stops the pulley within 5 seconds. Eventually, the internal brake will wear which may cause the mower blades to not engage, or, to not stop as required. Adjustments should be made by your nearest authorized service center/department.

•Make sure attachment clutch and ignition switches are in “OFF” position.

•Adjust the three nylon locknuts until space between clutch plate and rotor measures .012" at all three slot locations cut in side of brake plate.

NOTE: After installing a new electric clutch, run tractor at full throttle and engage and disengage electric clutch 10 cycles to wear in clutch plate.

	ROTOR
SLOT (3)	CLUTCH PLATE	.012"
NYLON LOCKNUT (3)		BRAKE PLATE

TO REPLACE MOTION DRIVE BELT (See Fig. 26)

Park the tractor on level surface. Engage parking brake. For ease of service there is a belt installation guide decal on bottom of left footrest.

•Remove mower (See “TO REMOVE MOWER” in this section of this manual.)

BELT REMOVAL -

•Create slack in belt by removing retainer spring from drive belt tension handle.

•Remove belt from all idler pulleys, transaxle pulley and then from engine pulley.

BELT INSTALLATION -

•Install new belt around engine pulley first, then around transaxle pulley and lastly into all the idler pulleys.

•Check to be sure belt is positioned correctly and is on proper side of all belt keepers.

•Engage the drive belt tension handle and replace the retainer spring.

•	Reinstall mower.
	RETAINER
	SPRING
	DRIVE BELT
	TENSION HANDLE
	ENGINE PULLEY		TRANSAXLE
			PULLEY
	BELT KEEPER
		FLAT IDLER
			BELT
	BELT	BELT	KEEPER
		KEEPER
	KEEPER		CLUTCHING
		CLUTCHING
	V-IDLER		FLAT IDLER
		IDLER

FIG. 26

FIG. 25

22