Sears 917.25148 manual Service, Adjustments, To Replace Mower Drive Belt

SERVICE AND

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FRONT-TO-BACK ADJUSTMENT (See Figs. 22 and 23) -

IMPORTANT: DECK MUST BE LEVEL SIDE-TO-SIDE. IF THE FOLLOWING FRONT-TO-BACK ADJUSTMENT tS

NECESSARY, BE SURE TO ADJUST BOTH FRONT LINKS EQUALLY SO MOWER WILL STAY LEVEL SfDE-TO-SlDE,,

To obtain the best cutting Jesuits, the mower housing should be adjusted so the front is approximately 1t8" 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.

otf links are not equal in length, adjust one !ink to same length as other tink_

•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 trunnion 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" wilt change dim, "F" by approximately 3/8".,

•Recheck side-to-side adjustment

_',%.	I	,7_ 1, MANDREL
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'q_@.;;' I ''F'' "F"t "_

FIG. 22

BOTH FRONT LINKS SHOULD BE EQUAL IN LENGTH

NUT "G"

NUT "H"

FRONT LINKS

TRUNNION

FIG. 23

ADJUSTMENTS

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TO REPLACE MOWER DRIVE BELT

MOWER DRIVE BELT REMOVAL (See Fig, 24) -,

. Park tractor on a level surface, Engage parking brake

oRemove four screws from L,H, mandrel cover and remove cover,

°Roll belt over the top of LH, mandrel pulley,

• Remove belt from electric clutch pulley,

• Remove belt from idter 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,

oBe sure spring is securely hooked to primary idler arm and bolt in mower housing,

MOWER DRIVE BELT INSTALLATION (See Fig 24)

,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 LH mandrel pulley.

oCarefully check belt routing making sure beft is in the grooves correctly and inside belt keepers.

. Reassemble L.H. mandrel cover,

L.H.		SCREWS
MANDREL		IDLER
		PULLEYS
COVER	"X_.,	ELECTRIC

CLUTCH

PULLEY

"!!ilr'

IDLER ARM

BELT

KEEPERSf

FIG., 24

21