Fuel System; Trou Ble Shoot Ing; Engine Oil - Husqvarna HU700H Operation Manual

ENGINE

FUEL SYSTEM

IMPORTANT: IT IS IMPORTANT TO PREVENT GUM DEPOSITS
FROM FORMING IN ESSENTIAL FUEL SYSTEM PARTS SUCH AS
CARBURETOR, FUEL FILTER, FUEL HOSE, OR TANK DURING
STORAGE. ALCOHOL BLENDED FUELS (CALLED GASOHOL OR
USING ETHANOL OR METHANOL) CAN ATTRACT MOISTURE
WHICH LEADS TO SEPARATION AND FORMATION OF ACIDS
DURING STORAGE. ACIDIC GAS CAN DAMAGE THE FUEL
SYSTEM OF AN ENGINE WHILE IN STORAGE.
• Empty the fuel tank by starting the engine and letting
it run until the fuel lines and carburetor are empty.
• Never use engine or carburetor cleaner products in
the fuel tank or permanent damage may occur.
• Use fresh fuel next season.
NOTE: Fuel stabilizer is an acceptable alternative in mini-
mizing the formation of fuel 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 minutes 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 en-
gine oil. (See "ENGINE" in the Maintenance section of
this manual).
See appropriate section in manual unless directed to a Husqvarna or other authorized repair center.
PROBLEM
Does not start 1. 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.
9. Control bar defective.
10. Fuel valve lever (if equipped) in OFF position. 10. Turn fuel valve lever to the ON position.
11. Weak battery (if equipped).
12. Disconnected battery connector (if equipped). 12. Connect battery to engine.
STORAGE
TROUBLESHOOTING POINTS
CAUSE
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 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 build-
ing 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. Empty fuel tank and refill tank with fresh,
clean gasoline.
4. Empty fuel tank and refill tank with fresh,
clean gasoline.
5. Connect wire to plug.
6. Replace spark plug.
7. Tight en blade bolt or replace blade adapter.
8. Depress control bar to handle.
9. Replace control bar.
11. Charge battery.
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