To Replace Motion Drive Belt; Mower Drive Belt Installation; To Replace Mower Drive Belt; Mower Drive Belt Removal - Craftsman 917.276180 Operator's Manual

20.0 hp, 42" mower electric start automatic transmission lawn tractor
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• 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.
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
(U).
IMPORTANT:
Check
belt for proper
rout-
ing in all mower
pulley
grooves.
3.
Raise
attachment
lift lever to highest
position.
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.
Tighten adjust nut
B to raise mower
Loosen adjust nut
B to lower mower
Loosen jam nut A first
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).
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).
5.
Slide belt toward
rear of tractor,
off the
steering
plate (F) and remove
from
tractor.
BELT INSTALLATION
-
1.
Install new belt from tractor
rear to
front,
over the steering
plate (F) and
above
clutch
brake pedal shaft (G).
2.
Pull belt toward
front of tractor
and roll
belt onto engine
pulley
(E).
24

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