To Level Mower Housing; Side-To-Side Adjustment; Front-To-Back Adjustment - Craftsman 917.257651 Owner's Manual

SERVMCE AND ADJUSTMENTS
TO LEVEL MOWER HOUSING
Adjust the mower while tracto_ is parked on level ground or
driveway. Make sure tires are propedy inflated (See
"PRODUCT SPEC! FtCATIO NS" on page 3 of this manual).
If tires are over or underinf]ated, you will not properly adjust
your mower,.
SIDE-TO-SIDE ADJUSTMENT (See Figs. 21 and 22)
o Raise mower to its highest position,
o At the midpoint of both sides of mower, measure height
from bottom edge of mower to ground_ Distance"A" on
both sides of mower shoutd be the same or within 1/4"
of each other.
. If 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: Three furl turns of adjustment nut will change
mower height about 1/8"
• Recheck measurements after adjusting,_
FRONT-TO-BACK ADJUSTMENT (See Figs, 23 and 24)
IMPORTANT: DECK MUST BE LEVEL SIDE-TO-SIDE tF
THE FOLLOWING FRONT-TO-BACK ADJUSTMENT tS
NECESSARY, BE SURETOADJUST BOTH FRONT LINKS
EQUALLY SO MOWER WILL STAY LEVEL SIDE-TO-
SIDE
BOTTOM EDGE
OF MOWER TO
GROUND
BOTTOM EDGE
OF MOWER TO
FIG. 21
LIFT LINKADJUSTMENTNUT
FIG. 22
To obtain the best cutting results, 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 tractot_ Measure dis-
tance "D" directly in front and behind the mandrel at bottom
edge of mower housing as shown.
• Before making any necessary adjustments, check that
both front links ate 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,
• Recheck side-to-side adjustment.
,, ,,,, _, ,/ MANDREL
FIG. 23
BOTH FRONT LINKS MUST BE EQUAL IN LENGTH
NUT "F*'_
FRONT LINKS TRUNNION
NUT "E"
FIG. 24
2O