Husqvarna 7021P / 961330030, Operator'S Manual

15

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).

STORAGE

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.