Craftsman 917.256544 owner manual Service AI Adjustments, To Level Mower Housing

SERVICE AI ADJUSTMENTS

TO LEVEL MOWER HOUSING

Adjust the mower while tractor is parked on level ground or driveway. Make sure tires are properly inflated (See "PRODUCT SPECl FICATIONS" on page 3 of this manual). Iftires are over or underinflated, you will not properly adjust your mower.

SIDE-TO-SIDE ADJUSTMENT (See Figs_ 20 and 21)

Raise mower to its highest position.

At the midpoint of both sides of mower, measure height from bottom edge of mower to ground. Distance "A" on both sides of mower should be the same or within 1/4" of each other_

oIf adjustment is necessary, make adjustment on one side of mower only.

*To raise one side of mower, tighten lift link adjustment nut on that side.

=To lower one side of mower, loosen lift link adjustment nut on that side.

NOTE: Each tull turn of adjustment nut wi!l change mower

height about	1/8".
Recheck	measurements	after adjusting.
BOTTOM EDGE		BOTTOM EDGE
OF MOWER	TO	OF MOWER TO
GROUND		GROUND

FIG. 20

LiFT LINK

ADJUSTMENT NUT

FRONT-TO-BACK ADJUSTMENT (See Figs 22 and 23}

iMPORTANT: DECK MUST BE LEVEL SIDE-TO-SIDE _F THE FOLLOWING FRQNT-TOoBACK ADJUSTMENT _S

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 !/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 necessa_ adjustments, check that beth front links are equal in length. Both !inks should be approximately 10-3/8".

If links are not equal in lenglh, adjust ene 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 1t4" to 314" 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.

MANDREL

FBG. 22

BOTH FRONT LINKS MUST BE EQUAL IN LENGTH

FiG. 21

NUT "E"

NUT "_

FFIONT LINKS TRUNNION

21 FIG. 23