To Replace Mower Blade Drive Belt; To Adjust Brake; To Replace Motion Drive Belt; Belt Removal/Installation - Craftsman 917.271860 Owner's Manual

Lawn tractor 21.0 hp, 42" mower electric start automatic transmission
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TO REPLACE
MOWER
BLADE
DRIVE
BELT
The mower blade drive belt may be
replaced without tools. Park the tractor on
level surface.
Engage parking brake.
BELT REMOVAL
-
1. Remove
mower from tractor
(See "-I-O
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).
Mandrel
Pulley
TO ADJUST
BRAKE
Your tractor is equipped with an adjust-
able brake system which is mounted
on
the side of the transaxie.
If tractor requires more than six (6) feet
stopping distance
at high speed
in
highest
gear on a level dry concrete
or
paved surface,
then brake must be
adjusted.
I.
Depress
clutch/brake
pedal and
engage
parking
brake.
2. Measure
distance
between
brake
operating
arm and nut "A" on brake
rod.
3. If distance
is other than 1-9/16", loosen
jam nut and turn nut "A" until distance
becomes
1-9/16".
Retighten
jam nut
against nut "A".
4.
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 neces-
sary.
Contact
a Sears or other
qualified
service center.
With Parking Brake
"Engaged"
Jam Nut
Nut "A"
Arm
Do Not touch this nut. If further brake
adjustment is necessary contact a Sears or
other qualified service center.
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.
BELT REMOVAL
-
1. Remove
mower (See 'qO 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 and
clutching
idler.
3.
Remove
belt downward
from around
engine
pulley.
4.
Pull belt slack toward
rear of tractor.
Carefully
remove
belt upwards
from
transmission
input pulley and over
cooling
fan blades.
5.
Remove
belt from center span keeper
and pull belt away from tractor.
BELT INSTALLATION
-
1. Carefully
work new belt down around
transmission
cooling
fan and onto the
input
pulley.
2.
Slide belt into the center span keeper.
3.
Pull belt toward front of tractor
and roll
around
the top groove
of engine
pulley.
4.
Install belt through
stationary
idler and
clutching
idler.
5.
Make sure belt is in all pulley grooves
and inside all belt guides
and keep-
ers.
6.
Install mower (See 'q-O INSTALL
MOWER"
in this section
of manual).
24

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