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500Wi OM
6.3 Infrequent use
Gasoline is extremely flammable and explosive under certain conditions.
Do not smoke or allow flames or sparks in the area.
During long-term storage, or infrequent use of your equipment, it is important to add a
fuel stabilizer, such as STA-BIL® Fuel Stabilizer, to help prevent fuel oxidation
(breakdown) and the formation of gum and varnish, and to inhibit corrosion in the fuel
system and carburetor.
1.
Be sure the storage area is free of excessive humidity and dust.
2.
It is best to keep the tank at least 95% full, as condensation will be less likely to occur in the fuel tank during
storage if the tank is full. Do not overfill the tank, as the fuel will need room to expand on hot days. Add an
appropriate amount of fuel stabilizer (per the instructions on the bottle) and run the generator for 5 minutes
to ensure that any fuel trapped in the system has the stabilizer in it. You may also opt to add the fuel
stabilizer and run the unit until it is out of fuel.
If you opt to drain the fuel, then continue on with the instructions below.
3.
To drain the gasoline from the fuel tank,
turn the engine switch to the “OFF” position.
4.
Attach a hose to the drain fitting on the carburetor and place the other end of the hose into an approved
gasoline container.
5.
Turn the fuel valve to the “ON” position, and loosen the carburetor drain screw and drain the gasoline into
the approved gasoline container.
6.
After the fuel tank has been drained, with the drain screw loosened, disconnect the spark plug wire and pull
the starter grip 3 to 4 times to drain the gasoline from the fuel pump.
7.
Turn the fuel val
ve to the “OFF” position, and tighten the drain screw securely.
8.
Change the engine oil.
9.
Remove the spark plug and pour about a tablespoon of clean engine oil into the cylinder.
10.
Crank the engine several revolutions to distribute the oil and then reinstall the spark plug.
11.
Slowly pull the starter grip until resistance is felt. At this point, the piston is coming up on its compression
stroke and both the intake and exhaust valves are closed. Storing the engine in this position will help to
protect it from internal corrosion.
6.4 Exercising the Generator
It is essential that the generator be exercised on a regular basis. This will prevent the accumulation of varnish or
sludge in the fuel system; remove moisture from the generator windings. Additionally the engine seals and
moving components will be lubricated. Exercise the generator by running it with at least a 1/2 load (225W) for 15
minutes per month. Gasoline fuel treatments to prevent contamination of your fuel supply are available from your
dealer. Fuel varnishing necessitating replacement of the carburetor is not a warrantable failure.
