DeWalt 900.370511 Troubleshooting Chart Problem Cause Correction, Does not start

598994-01,370511 TYPE2 1/5/06 10:44 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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