Craftsman 917.28712 Owner's Manual page 26

CAUTION: Blades are sharp. Protect
your hands with gloves and/or wrap blade
with heavy cloth.
, Raise mower to highest position.
• Position any blade so the tip is pointing
straight forward. Measure distance (B)
to the ground at front and rear tip of the
blade.
• If front tip of blade is not 1/8" to 1/2"
lower than the rear tip, go to the front of
tractor.
• With an 11/16" or adjustable wrench,
loosen jam nut A several turns to clear
adjustment nut B.
• With a 3/4" or adjustable wrench, turn
front link adjustment nut (B) clockwise
(tighten) to raise the front of mower, or,
counterclockwise (loosen) to lower the
front mower.
NOTE: Each full turn of the adjustment
nut will change mower height about 1/8".
, Recheck measurements, adjust if nec-
essary until front tip of blade is 1/8" to
1/2" lower than the rear tip.
• Hold adjustment nut in position with
wrench and tighten jam nut securely
against adjustment nut.
TO REPLACE MOWER DRIVE BELT
MOWER DRIVE BELT REMOVAL
1. Park tractor on a level surface. Engage
parking brake.
2. Lower attachment lift lever to its lowest
position.
3. Remove any dirt or grass clippings
which may have accumulated around
mandrels and entire upper deck sur-
face.
4. Remove belt from electric clutch pulley
(M), both mandrel pulleys (R) and all
idler pulleys (S).
MOWER DRIVE BELT INSTALLATION
1. Install belt around all mandrel pulleys
(R) and around idler pulleys (S) as
shown.
2. Install belt onto electric clutch pulley
(M).
IMPORTANT: Check belt for proper rout-
ing in all mower pulley grooves.
3. Raise attachment lift lever to highest
position.
Tighten adjust nut
B to raise mower
TO REPLACE MOTION DRIVE BELT
Park the tractor on level surface. Engage
parking brake. For assistance, there is a
belt installation guide decal on bottom side
of left footrest.
Loosen adjust nut
B to lower mower
Loosen jam nut A first
BELT REMOVAL -
1. Remove mower (See "TO REMOVE
MOWER" in this section of manual).
NOTE: Observe entire motion drive belt
and position of all belt guides and keepers.
2. Remove belt from stationary idler (A)
and clutching idler (B).
3. Remove belt from centerspan idler (C).
6. Pull belt slack toward rear of tractor.
Carefully remove belt upwards from
transmission input pulley and over
cooling fan blades (D).
4. Remove belt downward from engine
pulley (E).
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