Troubleshooting - Craftsman 917.4790A 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
o Do not store gasoline from one season
to another.
o Replace your gasoline can if your can
starts to rust. Rust and/or dirt in your
gasoline will cause problems.
o If possible, store your unit indoors and
cover it to protect it from dust and dirt.
o Cover your unit with a suitable protec-
tive 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.
TROUBLESHOOTING - See appropriate section in manual unless directed
to a Sears Parts & Repair Center.
PROBLEM CAUSE CORRECTION
Does not start
Dirty air filter.
Out of fuel.
Stale fuel.
Water in fuel.
.
2.
3.
4.
5. Spark plug wire is
disconnected.
6. Bad spark plug.
7. Loose blade or broken
blade adapter.
8. Control bar in released
position.
9. Control bar defective.
10. Fuel valve lever (if so
equipped) in OFF position.
11. Weak battery (if equipped).
12. Disconnected battery
connector (if equipped).
,
2.
3.
4.
5.
6.
7.
8.
9.
Clean/replace air filter.
Fill fuel tank.
Empty fuel tank and refill tank
with fresh, clean gasoline.
Empty fuel tank and refill tank
with fresh, clean gasoline.
Connect wire to plug.
Replace spark plug.
Tighten blade bolt or
replace blade adapter.
Depress control bar to
handle.
Replace control bar.
10. Turn fuel valve lever
to the ON position.
11. Charge battery.
12. Connect battery to engine.
16