Poulan 180278 owner manual To Replace Mower Drive Belt, TO REPLACE MOWER BLADE DRIVE BELT See Fig

SERVICE AND ADJUSTMENTS

•To raise front of blade, loosen nut “D” from trunnion on both front links. Tighten nut “C” on both front links an equal number of turns.

•When distance “B” is 1/8" to 1/2" lower at front than rear, tighten nut “D” against trunnion on both front links.

•Recheck side-to-side adjustment.

TO REPLACE MOWER DRIVE BELT

MOWER DRIVE BELT REMOVAL (See Fig. 24)

•Park tractor on a level surface. Engage parking brake.

•Lower mower to its lowest position.

•Disengage belt tention rod from lock bracket.

CAUTION: Rod is spring loaded. Have a tight grip on rod and release slowly.

•Remove screws from R.H. mandrel cover and remove cover.

•Remove any dirt or grass clippings which may have accumulated around mandrels and entire upper deck surface.

•Disconnect R.H. suspension arm from rear deck bracket by removing retainer spring.

•Roll belt over the top of R.H. mandrel pulley carefully.

•Remove belt from electric clutch pulley.

•Remove belt from idler pulleys.

•Check primary idler arm and two idlers to see that they rotate freely.

•Be sure spring is securely hooked to primary idler arm and spring arm.

MOWER DRIVE BELT INSTALLATION (See Fig. 24)

•Install belt in both idlers.

•Install new belt onto electric clutch pulley.

•Roll belt into upper groove of R.H. mandrel pulley carefully.

•Carefully check belt routing making sure belt is in the grooves correctly.

•Reconnect R.H. suspension arm to rear deck bracket with retainer spring.

•Reassemble R.H. mandrel cover.

•Engage belt tension rod by pushing rod into locking bracket.

TO REPLACE MOWER BLADE DRIVE BELT (See Fig. 25)

Park the tractor on level surface. Engage parking brake.

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

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

•Remove screws from L.H. mandrel cover and remove cover.

•Carefully roll belt off L.H. mandrel pulley.

•Remove belt from center mandrel pulley, idler pulley, and R.H. mandrel pulley.

•Remove any dirt or grass which may have accumulated around mandrels and entire upper deck surface.

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

•Be sure spring is hooked in secondary idler arm and secondary spring arm.

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

•Carefully roll belt over L.H. mandrel pulley. Make sure belt is in all grooves properly.

•Reinstall L.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).

SECONDARY	IDLER	SECONDARY
IDLER ARM	PULLEY
		SPRING ARM
L.H.
	SPRING
MANDREL
		CENTER
		MANDREL
		R.H.
		MANDREL
		COVER

BELT	RH
TENSION ROD
	SUSPENSION
(DISENGAGED
POSITION)	ARM

IDLER

PULLEY

SPRING

ARM

PRIMARY

IDLER ARM

R.H.

MANDREL

RH MANDREL COVER

ELECTRIC

CLUTCH

PULLEY

IDLER

PULLEY

FIG. 25

TO ADJUST BRAKE (See Fig. 26)

Your tractor is equipped with an adjustable brake system which is mounted on the 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”.

FIG. 24

22