Troubleshooting – Husqvarna 917.37581 User Manual
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gum deposits during stor age. Add stabilizer
to gasoline in fuel tank or storage container.
Always follow the mix ratio found on stabilizer
container. Run engine at least 10 min utes
after adding stabilizer to allow the stabilizer to
reach the carburetor. Do not empty the gas
tank and carburetor if using fuel stabilizer.
ENGINE OIL
Drain oil (with engine warm) and replace
with clean engine oil. (See “ENGINE” in
the Maintenance section of this man ual).
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
dis trib ute 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 pro tec -
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
engine and exhaust areas are still warm.
CAUTION: Never store the lawn mower
with gaso line in the tank in side a build ing
where fumes may reach an open fl ame
or spark. Allow the engine to cool before
storing in any enclosure.
Does not start 1. Dirty air fi lter. 1. Clean/replace air fi lter.
2. Out of fuel. 2. Fill fuel tank.
3. Stale fuel. 3. Empty fuel tank and refi ll tank
with fresh, clean gasoline.
4. Water in fuel. 4. Empty fuel tank and refi ll tank
with fresh, clean gasoline.
5. Spark plug wire is 5. Connect wire to plug.
disconnected.
6. Bad spark plug. 6. Replace spark plug.
7. Loose blade or broken 7. Tighten blade bolt or
blade adapter. replace blade adapter.
8. Control bar in released 8. Depress control bar to
position. handle.
9. Control bar defective. 9. Replace control bar.
10. Fuel valve lever (if so 10. Turn fuel valve lever
equipped) in OFF position. to the ON position.
11. Weak battery (if equipped). 11. Charge battery.
12. Disconnected battery 12. Connect battery to engine.
connector (if equipped).
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING - See appropriate section in manual unless directed
to a Husqvarna or other qualifi ed service center.