Troubleshooting - Craftsman 917.384420 Owner's Manual

550 series briggs & stratton engine 21" rear-discharge rotary lawn mower
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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.
• 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 protect it from dust and dirt.
• 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
Does not start
1. Dirty air filter.
2. Out of fuel.
3. Stale fuel.
with fresh, clean gasoline.
4. Water in fuel.
with fresh, clean gasoline.
5. Spark plug wire is
disconnected.
6. Bad spark plug.
7. Loose blade or broken
blade adapter.
Control bar in rele_,sed 8.
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).
CORRECTION
1. Clean / replace air filter.
2. Fill fuel tank.
3. Empty fuel tank and refill tank
4. Empty fuel tank and refill tank
5. Connect wire to plug.
6. Replace spark plug.
7. Tighten blade bolt or
replace blade adapter.
Depress control bar to
handle.
9. Replace control bar.
10. Turn fuel valve lever
to the ON position.
11. Charge battery.
.
12. Connect
battery
to engine.
16

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