598994-00,37051 8/9/05 10:17 AM Page 14

TROUBLESHOOTING CHART

PROBLEM

CAUSE

CORRECTION

Does not start

• Power cord is not properly

• Check extension cord

 

plugged in

attachment at both mower and

 

 

outlet ends.

 

• No power from outlet

• Check breaker or fuse.

 

• Blade does not rotate

• Unplug power cord, turn mower

 

freely or mower deck is

on its side and check blade.

 

clogged

Make sure it is free to rotate.

 

 

Also check for clogging.

 

 

 

 

Poor performance

• Grass too high or thick

• Raise mower cutting height to

 

 

cut 1/3 of grass length.

 

 

• Walk at a slower pace

 

 

• Reduce cutting width if needed.

 

 

• Unplug power cord, check deck

 

 

for clogging, check blade for

 

 

sharpness.

 

 

 

 

Poor cut – uneven

• Worn, bent or loose blade

• Unplug power cord.

 

 

• Replace blade. Tighten blade

 

 

bolt.

 

• Buildup of grass and

• Unplug power cord and clean

 

leaves under mower

underside of mower

 

 

housing.

 

 

 

 

Excessive

• Worn, bent, unbalanced or

• Unplug power cord.

vibration

loose blade

• Replace blade. Tighten blade

 

 

bolt.

 

• Bent motor motorshaft

• Contact an authorized service

 

 

center.

 

 

 

 

Mower stops

• House circuit breaker trips

• If mower won’t start, check

 

out or blows fuse

house circuit breaker or fuse.

 

 

• Unplug power cord, turn mower

 

 

over, and clean out deck.

 

• Foreign material is block-

• Walk slower.

 

ing blade rotation

• Reduce cutting width.

 

 

• Raise mower cutting height.

 

 

 

 

Hard to push

• Grass is too high or wheel

• Raise cutting height.

 

height is too low

 

 

 

 

 

Mower Does Not

• Operator presence control

• Replace operator presence

Stop when

switch is damaged

control switch.

Operator Presence

 

 

 

Control Switch is

 

 

 

Released

 

 

 

 

 

 

 

 

 

 

 

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DeWalt 900.37051 instruction manual Troubleshooting Chart Problem Cause Correction