Craftsman 917.258920 Owner's Manual page 23

SERV
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TO REPLACE MOWER BLADE DRIVE BELT
(See Fig. 24)
Park the tractor on level surfacer Engage parking brake.
= Remove mowerddve belt (See'q'O REPLACE MOWER
DRIVE BELT" in this section of this manual).
o Remove mower (See "TO REMOVE MOWER" in this
section of this manual).
o Remove screwsfrom R,Ho mandrel coverand remove
cover. Unhook spdng from bolt on mower housing.
= Carefully roll belt off R.H. mandrel pulley.
o Remove belt from center mandrel pulley, idler pulley,
and Loll. mandrel pulley.
= Remove any dirt or grass which may have accumu-
lated around mandrels and entire upper deck surface.
o Check secondary idler arm and idler to see that they
rotate freely.
° Be sure spring is hooked in secondary idler arm and
sway-bar bracket.
° Install new belt in lower groove of LoHomandrel pulley,
idler pulley, and center mandrel pulley as shown.
° Roll belt over RoHo mandrel pulley. Make sure belt is in
all grooves properly.
• Reconnect spring to bolt in mower housing and rein-,
stall R.H, mandrel cover.
° Reinstall mower to tractor (See "INSTALL MOWER
AND DRIVE BELT" in the Assembly section of this
manual)°
• Reassemble mower drive belt (See "TO REPLACE
MOWER DRIVE BELT" in this section of this manual).
LH. MANDREL MOWER BLADE
DRIVE BELT CENTER
ADJUSTMENTS
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NOTE: After installinga new electric clutch, run tractorat
full throttle and engage and disengage electric clutch 10
cycles to wear in clutch plate.
SWAY BAR IDLER
IDLER ARM
SPRING'
BRACKET PULLEY
FIG. 24
TO ADJUST ATTACHMENT CLUTCH
(See Fig. 25)
The electric clutch should provide years of service. The
clutch has a built-in brake that stops the pulley within 5
seconds. Eventually, the internal brake will wear which
may cause the mower blades to notengage, or, to not stop
as required. Adjustments shouldbe made byyour nearest
authorized service center/department.
° Make sure attachment clutchand ignitionswitches are
in "OFF" position.
° Adjust the three nylon Iocknuts until space between
clutch plate and rotor measures .012" at all three slot
locationscut in side of brake plate.
CLUTCH PLATE
NYLON t.OCKNUT (3)
FIG. 25
BRAKE PLATE
TO ADJUST BRAKE (See Fig. 26)
Your tractor is equipped with an adjustable brake system
which is mounted on the side of the transaxleo
if tractor requires more than six (6) feet stopping distance
at highspeed in highestgear, then brake must be adjusted°
o Depressclutchibrakepedal and engage parkingbrakeo
• Measure distance between brake operating arm and
nut 'W' on brake rod.
° Ifdistance isotherthan 1_1/2",loosen jam nut and turn
nut "A" until distance becomes 1-1/2". Retighten jam
nut against nut "A",
° Road test tractor for proper stopping distance as stated
above. Readjust if necessary. If stopping distance is
still greater than six (6) feet in highest gear, further
maintenance is necessary. Contact your nearest au-
thorized service center/department,
WITH PARKING BRAKE "ENGAGED"
NUT"A"
_JAM NUT
FIG, 26
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