Craftsman 917.377631 owner manual Replace spark plug, •13ghtenbladebolt or replace blade adaPter

Models: 37763 917.377631

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•Replace spark plug.

TROUBLE SHOOTING

PROBLEMCAUSE

Will not start

Dirty air filter.

 

Out of fuel.

 

Stale

fuel.

 

Water

in fuel.

 

Spark plug wire is dis-.

 

 

connected

 

Bad spark plug.

 

Loose blade or broken

 

 

blade

adapter.

 

Control bar in released

 

 

position

 

Control bar defective

 

Weak

battery

 

Disconnected battery

 

 

connector.

Loss of power

Rear of lawn mower

 

 

housing/blade dragging in

 

 

heavy grass.

 

Cutting too much grass.

 

Dirty air filter.

 

Buildup of grass, leaves

 

 

and trash under mower.

 

• Too much oil in engine.

 

Walking speed too fast.

CORRECTION

Clean/replaceair filter.

Fill fuel tank.

Drain tank and refill with fresh clean fuel.

Drain fuel tank and carburetor

and refill tank with fresh gaso- line.

Connect wire to plug.

Replace spark plug.

"13ghten'bladebolt or replace blade adaPter.

Depress'i:ontrolbar to handle.

Replace control bar.

Charge battery.

Connect battery to engine.

Set in =Higher Cut" position.

Set in =Higher Cut" position.

Clean/replace air filter.

Clean underside of mower

housing.

,, Check oil level.

Cut at slower walking speed.

Poor cut - unever Wom, bent or loose blade.

Wheel heights uneven.

Buildup of grass, leaves, and trash under mower.

Replace blade. Tighten blade bolt.

Set all wheels at same height.

Clean underside of mower housing.

Excessive vibra- Wom, bent or loose blade. tion

Bent engine crankshaft.

Starter rope hard Engine flywheel brake is

to pullon when control bar is released.

Bent engine crankshaft

Blade adapter broken.

Blade dragging in grass.

Replace blade. Tighten blade bolt.

Contact an authorized service center/department.

Depress control bar to upper handle before pulling starter rope.

Contact an authorized service center/department.

Replace blade adapter.

Move lawn mower to cut grass or to hard surface to start _ engine.

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Craftsman 917.377631 Replace spark plug, •13ghtenbladebolt or replace blade adaPter, Depressi ontrolbar to handle