Husqvarna 5521RS 用户手册

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.  ALSO, EXPERIENCE INDICATES THAT 
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.

Drain oil (with engine warm) and replace with clean en-
gine oil.  (See “ENGINE” in the Maintenance section of 
this manual).

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.

•      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.