SERVICE AND

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 the front is approximately 1/8" to 1/2" lower than the rear when the mower is in its highest position.

Check adjustment on right side of tractor. Measure dis- tance "F" directly in front of 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.

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

-To lower front of mower housing, loosen nut"G" on both front links an equal number of turns.

When distance "F" is 1/8" to 1/2" lower at front than

rear, tighten nut"H" against trunnion on both front links.

. To raise front of mower housing, loosen nut "H" from ti'unnion on both front links. Tighten nut "G" on both front links an equal number of turns.

-When distance "F" is 1/8" to 1/2" lower at front than

rear, tighten nut "H" against trunnion on both front links.

NOTE: Each full turn of nut "G" will change dim. "F" by approximately 3/8".

Recheck side-to-side adjustment.

ADJUSTMENTS

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.

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 INSTALLATIOI'q (See Fig. 23) -

=Install belt in both idlers. Make su re belt is in both belt keepers at the idlers as shown.

Install new belt onto electric clutch pulley.

Rol! 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 LH. mandret cover.

L.H.SCREWS

MANDRELIDLER

PULLEYS

_F_

COVER X

ELECTRIC

MOWER_ CLUTCH

DRIVE BELT i _'" _'PULLEY

FIG. 21

.?

BOTH FRONT LINKS SHOULD BE EQUAL IN LENGTH

FIG. 23

NUT "N

FRONT LINKS

TRUNNION

FIG. 22

21

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Sears 917.25051 manual Adjustments, To Replace Mower Drive Belt

917.25051 specifications

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