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Craftsman 917.255960 Owner's Manual page 21

18.0 hp twin cylinder electric start 44" mower 6 speed garden tractor

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TO REPLACE
MOWER
BLADE
DRIVE
BELT
(See Fig. 34)
Park the tractor on level surfaCer Engage parking brake.
For assistance, there is a belt installation guide decal on the
underside of mower belt cover.
Remove mower (See "TO REMOVE MOWER" in this
section of this manual).
Remove screws and idler arm nut securing mower belt
cover and remove cover_
Roll belt over the top of the R,H. mandrel
Pull belt off all other mandrels,
Remove
any
dirt
and
grass
which
may
have
accumulatend
mandrels or idler arm.
Check deck idler arm assembly and flat idler to see that
they rotate freely.
Be sure spring is hooked in deck idler arm assembly
and on bolt in mower housing,
Insta{I new be{t in groove of LrH mandrel pulley, lower
groove of center mandrelputley
and around flat idler as
shown.
From a position at discharge end of mower, roll idler
belt into groove of RrH mandrel pulley.
Rotate center mandrel pulley by hand to make sure belt
is in grooves properly.
Reassemble top cover to deck. Tighten a!l screws and
idler arm nut securely,
Install mower to tractor (See "INSTALL MOWER AND
DRIVE BELT" in the Assembly section of this manual,
IDLER ARM NUT
CENTRAL
MANDREL
PULLEY
FL_T IDLER
L.H, MANDREL
R.H. MANDREL
PULLEY
PULLEY
FIG. 34
TO ADJUST
BRAKE
(See Figs.
35 and
36)
Your unit is equipped with an adjustable
brake system
which is mounted on the right side of the transaxle
If unit requires more than six (6) feet stopping distance at
high speed in highest gear, then brake must be adjusted,
Remove four (4) hex washer head tapping screws from
shift cover plate located on top of tractor frame.
Re-
move the cover plate.
Loosen am nut (A) on brake rod (B) at clevis (C) (Fig
36). fyou f nd t d fficu t to loosen jam nut (A), remove
cover plate in L.H frame rail
Rotate brake rod (b) counterclockwise,
turning brake
rod out of clevis (c) four (4) to six (6) turns.
Start tractor with transaxle in "N" (neutral) position,
Depress clutch/brake pedal to the point where the belt
stops moving,
Hold clutch/brake
pedal in position by
engaging parking brake
If belt beings to move after
engaging parking brake, depress clutch/brake pedal to
next notch on parking brake
Shut engine Offr Rotate brake rod (B) clockwise by
hand, turning
brake rod into clevis
(C) until tight.
Tighten jam nut (A) on brake rod (B) at clevis (C) r
Reinstall shift cover plate andfour
4) mountingscrews
If cover plate in LH
rail was removed
t shou d be
replaced.
SHIFT COVER PLATE
\
FIG. 35
POWER TAKE
OFF (CLUTCH
PULLEY
- See
Fig. 33)
"The power take-off clutch should provide years of serviee_
The clutch incorporates a built in brake that stops the pulley
almost immediately.
Eventually,
the internal brake will
wear so the mower blades will not stop as recommended,
Adjustment should be made by your nearest Authorized
Service Center.
FIG. 36
21

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