Craftsman 917.258911 owner manual Service and Adjust Ents, To Replace Mower Drive Belt, Position

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SERVICE AND ADJUST ENTS

FRONT-TO-BACK ADJUSTMENT (See Figs, 20 and 21) -

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

NECESSARY, BE SURE TO ADJUST BOTHFRONT LINKS EQUALLY SO MOWER W_LLSTAY LEVEL SIDE-TO-StDEo

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 Iowerfront 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 !/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°

TO REPLACE MOWER DRIVE BELT

MOWER DRIVE BELT REMOVAL (See Fig. 22) -

•Park tractor on a level surface, Engage parking brake_

°Remove four screws from L.H_ rnandret cover and

remove cover,,

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

•Remove belt from electdc clutch pulley.,

•Remove bert from idler pulieys_

•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 22) -

°Install belt in both idlers. Make sure belt is in both belt keepers at the idler'sas 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,Ho	SCREWS	SPRING	ELECTRIC
			CLUTCH
MANDREL			PULLEY

COVER	IDLER
	PULLEYS
	PRIMARY
	IDLER
	ARM

FIG, 20

BOTHFRONT LINKS SHOULD BE EQUALIN LENGTH

BOLT IN

MOWER

HOUSING

MANDREL

MOWER

DRIVE BELT BELT

KEEPER

FIG. 22

FRONTLtNKS

FIG. 21 22