Sears 917.2566 owner manual Service and Adjustments, To Replace Mower Drive Belt

SERVICE AND ADJUSTMENTS

SUSPENSION

ARM

LIFT LINK

ADJUSTMENT NUT

FIG. 20

FRONT-TO-BACK ADJUSTMENT (See Figs. 21 and 22)

iMPORTANT: DECK MUST BE LEVEL SIDE-TO-SIDE. IF THE FOLLOWING FRONT-TO-BACK ADJUSTMENT IS NECESSARY, BE SURE TO ADJUST BOTH FRONT LINKS

EQUALLY SO MOWER WILL STAY LEVEL SIDE-TO- SIDE.

To obtain the best cutting results, the mower housing should be adjusted so that the front is approximately 1/4" to 3/4" lower than the rear when the mower is in its highest position.

Check adjustment on right side of tractor. Measure dis- tance "D" directly in front and behind the mandrel at bottom edge of mower housing as shown.

•Before making any necessary adjustments, check that both front links are equal in length. Both links should be approximately 10-3/8".

,,If links are not equal in length, adjust one link to same length as other link.

,,To lower front of mower loosen nut "E" on both front

links an equal number of turns.

_, When distance "D" is 1/4" to 3/4" lower at front than

rear, tighten nuts "F" against trunnion on both front links.

•To raise front of mower, loosen nut"F" from trunnion on both front links. Tighten nut "E" on both front links an equal number of turns.

•When distance "D" is 1/4" to 3/4" lower at front than

rear, tighten nut "F" against trunnion on both front links. o Recheck side-to-side adjustment.

o\_ \ I. o or MANDREL

FIG. 21

BOTH FRONT LINKS MUST BE EQUAL IN LENGTH

..........._.J'JUT			fief!
NUT "F"-"-"--	_
FRONT LINKS _	_--------	_'_	_
	_		TRUNNION

TO REPLACE MOWER DRIVE BELT

MOWER DRIVE BELT REMOVAL (See Fig. 23) -

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

@Remove four screws from L.H. mandrel cover and remove cover.

,Roll belt over the top of L.H. mandrel pulley.

• Remove belt from electric clutch pulley.

• Remove belt from idler pulleys.

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

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

°Be sure spring is securely hooked to primary idler arm and bolt in mower housing.

MOWER DRIVE BELT INSTALLATION (See Fig. 23) -

,Install belt in both idlers. Make sure belt is in both belt keepers at the idlers as shown.

•Install new belt onto electric clutch pulley.

•Roll belt into upper groove of L.H. mandrel pulley.

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

•Reassemble L.H. mandrel cover.

L.H.	SCREWS
MANDREL	IDLER
COVER	PULLEYS
	ELECTRIC
	CLUTCH
	PULLEY

MOWER

DRIVE

BELT

IDLER ARM BELT

KEEPERS

FIG. 23

FIG. 22

21