MTD 450 Series Shop Manual page 62

For Parts Call 606-678-9623 or 606-561-4983
450 Series Tillers
Symptom
Tines drive, but wheels
do not turn in Reverse till
mode
Forward (wheel drive
only) does not work
Reverse (wheel drive
only) does not work
Tines or wheels drive in
Neutral
Wheels do not drive in
any operating mode
58
Troubleshooting Chart
Cause
Damage to gear drive to
wheels
1. Damage to gear drive
to wheels
2. Shift fork stuck in Neu-
tral
1. Damage to gear drive
to wheels
2. Shift fork stuck in Neu-
tral
Shift fork stuck in a drive
position.
1. Damage to chain drive
to wheels
2. Damage to gear drive
to wheels
3. Shift fork stuck in Neu-
tral
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Cure
Repair input spur gear and/or
paired wheel drive gear on main
shaft.
Look for damage on large set of
teeth on spur gear and/or lower of
two paired gears on main shaft.
1. Repair input spur gear and/or
paired wheel drive gear on
main shaft.
• Look for damage on large
set of teeth on spur gear
and/or lower of two paired
gears on main shaft.
2. Repair shift fork/shift arm.
Could be internal or external
(pointer).
1. Repair input spur gear and/or
bottom gears on main shaft
and counter shaft.
2. Repair shift fork/shift arm.
Could be internal or external
(pointer).
Repair shift fork/shift arm. Could be
internal or external (pointer).
1. Repair chain, wheel axle
sprocket, and/or wheel speed
reduction shaft sprocket.
2. Repair gear on wheel speed
reduction shaft and/or wheel
drive transfer gear.
3. Repair shift fork/shift arm.
Could be internal or external
(pointer).