Troubleshooting - Craftsman 917.389510 Owner's Manual

ENGINE OIL
Drain oil (with engine warm) and replace
with clean engine oil. (See "ENGINE" in
the Maintenance section of this manual).
CYLINDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.
3. Pull.starter handle slowly a few times
to distribute oil.
4. Replace with new spark plug.
OTHER
• Do not store gasoline from one season
to another.
TROUBLESHOOTING CHART
PROBLEM CAUSE
Does not start I. Dirty air filter.
2. Out of fuel.
3. Stale fuel.
4. Water in fuel.
5. Spark plug wire is
disconnected.
6. Bad spark plug.
7. Loose blade or broken
• blade adapter.
8. Control bar in released
position.
Loss of power
g,
1.
Control bar defective.
2.
3.
4.
15.
6.
1.
2.
3.
1.
2.
Rear of lawn mower
housingor cutting 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.
• 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 protec-
tive cover that does not retain mois-
ture. Do not use plastic. Plastic cannot
breathe which allows condensation to
form and will cause your unit to rust.
IMPORTANT: Never cover mower while
engone and exhaust areas are still warm.
A CAUTIONINever 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 filter.
2. Fill 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. Tighten blade bolt or
replace blade adapter.
8. Depresscontrolbar to
handle.
9. Replace controlbar.
1, Set to "Higher Cut"
position.
2. Set to "Higher Cut"
position.
3. Clean/replece air filter.
4. Clean underside of mower
housing.
5. Check oil level.
6. Cut at slower walking
speed.
16
Poor cut- Worn, bent or loose blade. 1. Replace blade. Tighten
uneven blade bolt.
Wheel heights uneven. 2. Set all wheels at same
height
Buildup of grass, leaves 3. Clean underside of
and trash under mower, mower housing•
Excessive Worn, bent or loose blade. 1. Replace blade. Tighten
vibration blade bolt.
Bent engine crankshaft. 2. Contact a Sears or other
qualified service center.