To replace mower drive belt, Service and adjustments – Sears EZ3 917.2566 User Manual

Page 21

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SERVICE AND ADJUSTMENTS

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

IMPORTANT: DECK MUST BE LEVEL SIDETO-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 resuits, 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, checkthat
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.

« Recheck side-to-side adjustment.

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 LH. mandrel cover and

remove cover.

Roil 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.