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Craftsman 917.25480 Operator's Manual page 30

Lawn tractor 21.0 hp 42" mower electric start automatic transmission

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TROUBLESHOOTING
CHART:
See appropriate section in rnanual unless directed to Sears service center
PROBLEM
Poor grass
discharge
Headlight(s)
not
working
(if so equipped)
Battery will not
charge
Loss of drive
Engine "backfires"
when turning
engine "OFF"
Engine dies when
tractor
is shifted
into reverse
CAUSE
CORRECTION
1
Engine
speed too slow.
1
Place throttle
control
in "FAST"
position.
2
Travel speed too fast.
2
Shift to slower speed.
3
Wet grass.
3
Allow grass
to dry before
mowing.
4
Mower deck
not level.
4
Level mower
deck.
5
Low/uneven
tire air pressure.
5
Check tires for proper
PSI.
6
Worn, bent or loose blade.
6
Replace/sharpen
blade. Tighten
blade
bolt.
7
Buildup
of grass,
leaves and
7
Clean
underside
of mower
trash under mower,
housing.
8
Mower drive belt worn.
8
Replace
mower drive belt.
9
Blades
improperly
installed.
9
Reinstall
blades
sharp edge down.
10
Improper
blades
used.
10
Replace
with blades
listed in
this manual.
11
Clogged
mower deck vent holes
11
Clean
around
mandrels
to
from buildup
of grass,
leaves,
and
open vent holes.
trash around
mandrels.
1
Light switch
is "OFF".
1
Turn light switch "ON".
2
Bulb(s)
or lamp(s)
burned
out.
2
Replace
bulb(s)
or lamp(s).
3
Faulty light switch.
3
Check/replace
light switch.
4
Loose or damaged
wiring.
4
Check wiring
and connections.
5
Blown fuse.
5
Replace
fuse.
1
Bad battery
cell(s).
1
Replace
battery.
2
Poor cable connections.
2
Check/clean
all connections.
3
Faulty regulator
(if so equipped).
3
Replace
regulator.
4
Faulty alternator.
4
Replace
alternator.
1
Freewheel
control in
1
Place freewheel
control in
"DISENGAGED"
position.
"ENGAGED"
position.
2
Debris on steering
plate (if
2
See "CLEANING"
in the
equipped),
maintenance
section.
3
Motion drive belt worn, damaged,
3
Replace
motion drive belt.
or broken.
4
I Air trapped
in transmission
during
4
Purge transmission.
shipment
or servicing.
5
I Axle
key missing.
5
Install axle key at rear wheel.
See
"TO REMOVE
WHEEL"
in the
Service
and Adjustments
section.
Engine
throttle
control
not
sel
between
half and full speed
(fast)
position
before
stopping
engine.
Reverse
operation
system
(ROS)
is not "ON" while mower
or other
attachment
is engaged.
Move throttle
control between
half and full speed
(fast) position
before stopping
engine.
Turn ignition
key to ROS "ON"
position.
See Operation
section.
30

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