To Level Mower Housing; To Replace Mower Blade Drive Belt; Side-To-Side Adjustment; Front-To-Back Adjutment - Craftsman 917.275390 Owner's Manual

TO LEVEL MOWER HOUSING
Adjust the mower while tractor is parked
on level ground or driveway. Make sure
tires are properly inflated (See "PROD-
UCT SPECIFICATIONS" section of this
manual). If tires are over or underinflated,
you will not properly adjust your mower.
SIDE-TO-SIDE ADJUSTMENT
• 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.
• If adjustment is necessary, make adjust-
ment 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 full turn of adjustment nut
will change mower height about 1/8".
• Recheck measurements after adjusting.
Bottom edge Bottom edge of
of mower to f_? n3o_,er to ground
gr°und XI :_Z_!/
• When distance "D" is 1/8" to 1/2"
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 num-
ber of turns. The two front links must
remain equal in length.
• When distance "D" is 1/8" to 1/2" lower
at front than rear, tighten nut "F" against
trunnion on both front links.
• Recheck side-to-side adjustment.
_--__ Mandrel
Both Front Unks Should beEqual in Length
Nut
_E _
n Arm
Lift Link N_
Adjustment
FRONT-TO-BACK ADJUSTMENT
IMPORTANT: Deck must be level side-to
side. If the following front-to-back adjust-
ment 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 1/8" to 1/2"
lower than the rear when the mower is in
its highest position.
Check adjustment on right side of trac-
tor. Measure distance "D" directly in front
and behind the mandrel at bottom edge of
mower housing as shown.
• Before making any necessary adjust-
ments, 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 lower front of mower loosen nut "E"
on both front links an equal number of
turns.
Trunnion
Front Links
TO REPLACE MOWER BLADE DRIVE
BELT
The mower blade drive belt may be re-
placed without tools. Park the tractor on
level surface. Engage parking brake.
BELT REMOVAL -
1. Remove mower from tractor (See "TO
REMOVE MOWER" in this section of
manual).
2. Work belt off both mandrel pulleys and
idler pulleys.
3. Pull belt away from mower.
BELT INSTALLATION -
1. Work belt around both mandrel pulleys
and idler pulleys
2. Make sure belt is in all pulley grooves
and inside all belt guides.
3. Install mower (See "To Install Mower" in
this section of this manual).
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