Troubleshooting Chart - Craftsman 917.379540 Owner's Manual

ENGINEO|L
Drain oil (with engine warm) and replace with
clean engine oil. (See "ENGINE" in the
Maintenance section of this manual).
CYLINDER
• Remove spark plug.
• Pour one ounce (29 ml) of oil through spark
plug hole into cylinder.
• Pull starter handle slowly a few times to
distribute oil.
• Replace with new spark plug.
OTHER
• Do not store gasoline from one season to
another.
TROUBLESHOOTINGCHART
PROBLEM CAUSE
Does not start
Loss of power
1. Dirty air filter.
2. Out of fuel.
3. Stale fuel.
4. Water in fuel.
,
5. Spark#ug wirob
disconnected.
6. eadepark
7. Loose blade or broken blad_
adapter.
8. Control bar in released
posits.
9. Control bar defective.
1. Rear of lawn mower housing
or cutting blade dragging
in heavy grass.
Cutting too much grass.
3. Dirty air tilter.
4. Buildup of grass, leaves,
and trash under mower.
5. Too much oil in engine.
6. Walking speed too fast.
Poor cut- uneven
1. Wom, bent or looseblade.
2. Wheel heights uneven.
3. Buildupof grass, leaves
and trash under mower.
• Replace your gasoline can if your can
starts to rust. Rust and/or dirt in your
gasoline will cause problems.
• If possible, store your unit indoors and
cover it to give protection from dust and dirt.
• Cover your unit with a suitable protective
cover that does not retain moisture. Do
not use plastic. Plastic cannot breathe
which allows condensation to form and will
cause your unit to rust.
IMPORTANT: Never cover mower while
engine and exhaust areas are still warm.
_,CAUTION: Never store the lawn
mower with gasoline in the tank inside a
building where fumes may reach an open
flame or spark. Allow the engine to cool
before storing in any enclosure.
CORRECTION
1. Clean/replace air tilter.
2. RII fuel tank.
3. Drain tank and refill with
fresh clean fuel.
4. Drain fuel tank and
carburetor and refill tank
with fresh gasoline.
5. Connect wire to plug.
6. Replace spark plug.
7. l-=ghten blade bolt or
replace blade adapter.
8. Depreas control b arto
handle.
9. Replace control bar.
1. Set to "Higher Cut"
position.
2. Set to "Higher Cut"
position.
3. Clean/replace air tilter.
4. Clean undersideof mower
housing.
5. Check oil level.
6. Cut at slower walking
speed.
I1.
2.
3.
17
Replace blade. lighten
blade boll
Set all wheals at same
height
Clean underside of
mower housing.