Poulan 177271 owner manual Service And Adjustments, TO ADJUST ATTACHMENT CLUTCH See Fig

SERVICE AND ADJUSTMENTS

•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).

MOWER BLADE

L.H.DRIVE BELT CENTER

MANDRELMANDREL

IDLER

PULLEY

R.H.

MANDREL

COVER

SECONDARY

IDLER ARM

SPRING

SWAY-BAR

BRACKET SCREW

FIG. 25

TO ADJUST ATTACHMENT CLUTCH (See Fig. 26)

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.

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

FIG. 26

TO ADJUST BRAKE (See Fig. 27)

Your tractor is equipped with an adjustable brake system which is mounted on the left side of the transaxle.

If tractor requires more than six (6) feet stopping distance at high speed in highest gear on a level dry concrete or paved surface, then brake must be adjusted.

•Depress clutch/brake pedal and engage parking brake.

•Measure distance between brake operating arm and nut “A” on brake rod.

•If distance is other than 1-3/4", loosen jam nut and turn nut “A” until distance becomes 1-3/4". Retighten jam nut against nut “A”.

•Road test tractor for proper stopping distance as stated above. Readjust if necessary. If stopping distance is still greater than six (6) feet in highest gear, further maintenance is necessary. Contact your nearest au- thorized service center/department.

WITH PARKING BRAKE “ENGAGED”

1-3/4"

NUT “A”

OPERATING	JAM NUT
ARM

FIG. 27

TO REPLACE MOTION DRIVE BELT (See Fig. 28)

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. It is not necessary to remove mower.

BELT REMOVAL -

•Engage parking brake (creates slack in belt).

•Remove mower drive belt from electric clutch pulley only (See “TO REPLACE MOWER DRIVE BELT” in this section of this manual).

•Roll motion drive belt off transaxle pulley.

•Roll belt off clutching idler pulleys, then off engine pulley and front V-idler pulley.

•Pull belt out of all belt keepers.

BELT INSTALLATION -

•Place V part of belt into grooves on engine pulley and front V-idler, making sure to route belt inside of belt keepers.

•Put belt coming from V-idler above midspan belt keeper, then onto clutching idler pulleys as shown.

•Make sure V part of belt engages V-idler.

•Place belt around transaxle pulley, beginning at top. V part of belt should engage transaxle pulley.

•Place long lower section of belt through loop in midspan belt keeper.

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

•Reinstall mower drive belt onto electric clutch pulley.

IMPORTANT: CHECK BRAKE ADJUSTMENT.

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