Fuel System; Engine Oil - Husqvarna 87521HVE Owner's Manual

2. Remove the two (2) handle knobs and carriage bolts
on sides of the lower handle and pivot entire handle
as sem bly forward and allow it to rest on mower.
3. Reinstall knobs and carriage bolts to lower handle or
handle brackets for safe keeping.
• When setting up your handle from the storage posi-
tion, you must manually lock lower handle into mowing
position.
IMPORTANT: WHEN FOLDING THE HANDLE FOR STORAGE
OR TRANSPORTATION, BE SURE TO FOLD THE HANDLE AS
SHOWN OR YOU MAY DAMAGE THE CONTROL CABLES.
OPERATOR
PRES ENCE
CONTROL
BAR
FOLD
FORWARD
STORAGE
KNOB
HANDLE
BRACKET
STORAGE
MOWING
POSITION
FOR
HANDLE
HANDLE
HANDLE
FIG. 22
BOLT
FIG. 23
ENGINE

FUEL SYSTEM

IMPORTANT:
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.
UPPER

ENGINE OIL

Drain oil (with engine warm) and replace with clean engine
oil. (See "ENGINE" in the Maintenance section of this
manual).
KNOB
CYLINDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through spark plug hole
LOWER
into cylinder.
3. Pull starter handle slowly a few times to distribute oil.
4. Replace with new spark plug.
BATTERY
Disconnect the battery from the engine connector and
charge battery 48 hours.
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.
16
IT IS IMPORTANT TO PREVENT GUM
CAUTION: Never store the lawn mower
with gasoline in the tank inside a build-
ing where fumes may reach an open
fl ame or spark. Allow the engine to cool
before storing in any enclosure.