To level mower housing, Service and adjustments – Sears 917.257643 User Manual
Page 21
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SERVICE AND 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 SPECIFICATIONS” on page 3 of this manual).
If tires are over or underinflated, you will not properly adjust
your mower.
SIDETO'SIDE ADJUSTMENT (See Figs. 21 and 22)
» Raise mower to its highest position.
» Atthe 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.
» 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 full 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. 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 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 tractor. Measure dis
tance “D" directly in front and behind the mandreJ.gi bottom
edge of mower housing as shown.
» Before making any necessary adjustments, check that
both front links are 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 "P against trunnion on both front
links.
' T o 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” againsttrunnion on both front links.
» Recheck side-to-side adjustment
BOTH FRONT LINKS MUST BE EQUAL IN LENGTH
«--------------------------------------►
FRONT LINKS
21
TRUNNION
FIG. 24