Craftsman 917.377422 owner manual Troubleshooting Chart Problem Cause, Lossof power

TROUBLESHOOTING CHART

PROBLEM CAUSE

CORRECTION

Lossof power

Poor cut - uneven

Excessive vibrat'mn

Starter rope hard to pull

•Rear of lawn mower housing or cutting blade dragging

in heavy grass.

•Cutting too much grass,

•Dirty air filter.

•Buildup of grass, loaves, and trash under mower.

•Too much oil in engine.

•Walking speed too fast.

•Worn, bent or loose blade.

•Wheel heights uneven.

•Buildup of grass, loaves and trash under mower.

•Worn, bent or loose blade.

•Bent engine crankshaft.

•Engine flywheel brake is on when controlbar is released.

•Bent engine crankshaft.

•Blade adapter broken.

•Blade dragging in grass.

•Set to =Higher Cut" position.

•Set to "Higher Cut" position.

•Clean/replace air filter.

•Clean underside of mower

housing.

•Check oil level.

•Cut at slower walldng

speed.

•	Replace blade. TK:jhten
	blade belt.
• Set all wheels at same
	]height
•	Clean underside of
	mower housing.
• Replace blade. T_jhten
	blade bolt.
•	Contact an authorized
	service center.
•	Depress control barto
	upper handle before
	pulling starter rope.
•	Contact an authorized
	service center.
•	Replace blade adapter.
• Move lawn mower to cut
	grass otto hard surface

Grass catcher not filling ('dso equipped)

Hard to push

•Cutting height too low.

•Lift on blade worn off.

•Catcher not venting air.

•Grass is too high or wheel height is too low.

•Rear of lawn mower housing or blade dragging in grass.

•Grass catcher too full.

•Handle height position not right for you.

•	Raise cutting height.
•	Replace blade.
•	Clean grass catcher.
•	Raise cutting height.
•	Raise rear of lawn mower
	housing one (1) setting
	higher.
•	Empty grass catcher.
• Adjust handle height to
	suit,

16