Winter Storage; Long Term Storage; Protect Fuel System; Change Oil - Generac Power Systems 4040 PRO GAS PW 49ST Operator's Manual

Power washer
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Maintenance
• ALWAYS point the spray gun in a safe direction, and squeeze the
spray gun trigger to release high pressure every time you stop the
engine. Engage the trigger lock when not in use.
2. Disconnect the hoses from the spray gun and high pressure
outlet on the pump. Drain water from the hoses, spray gun,
and lance. Use a rag to wipe off the hose.
3. Empty the pump of all pumped liquids. Check that the engine
ON/OFF switch and fuel valve are in the OFF position. Then pull
the recoil handle about six times. This should remove most of
the liquid in the pump.
4. Store the unit in a clean, dry area.
5. If storing for more than 30 days, see the Long Term Storage
section.
Fuel and its vapors are extremely flammable
and explosive. Fire or explosion can cause
severe burns or death.
WHEN STORING FUEL OR EQUIPMENT WITH FUEL IN TANK:
• Store away from furnaces, stoves, water heaters, clothes dryers,
or other appliances that have a pilot light or other ignition source
because they can ignite fuel vapors.

WINTER STORAGE

You must protect the unit from freezing temperatures.
• Failure to do so will permanently damage the pump and render the
unit inoperable.
• Freeze damage is not covered under the warranty.
To protect the unit from freezing temperatures:
1. Follow steps 1-3 in the previous section, After Each Use.
2. Use a pump saver to treat pump. This minimizes freeze
damage and lubricates the pistons and seals.
3. If a pump saver is not available, connect a 3-foot section of
garden hose to the water inlet adapter. Pour RV-antifreeze
(antifreeze without alcohol) into the hose. Pull the recoil
handle twice. Disconnect the 3-foot hose.
4. Store the unit in a clean, dry area.

LONG TERM STORAGE

If you do not plan to use the power washer for more than 30 days,
you must prepare the engine and pump for long term storage.

PROTECT FUEL SYSTEM

Fuel can become stale when stored for over 30 days. Stale fuel
causes acid and gum deposits to form in the fuel system or
on essential carburetor parts. To keep the fuel fresh, use a fuel
stabilizer, available as a liquid additive or a drip concentrate
cartridge.
There is no need to drain the gasoline from the engine if a fuel
stabilizer is added according to instructions. Run the engine for
2 minutes to circulate the stabilizer throughout the fuel system.
The engine and fuel can then be stored up to 24 months (per fuel
stabilizer manufacturer's specifications).
18
NOTE:
If the gasoline in the engine has not been treated with a fuel
stabilizer, it must be drained into an approved container. Run the
engine until it stops from lack of fuel. The use of a fuel stabilizer
in the storage container is recommended to maintain freshness.

CHANGE OIL

While the engine is still warm, drain the oil from crankcase. Refill
with the recommended grade. See Changing Engine Oil in Engine
Maintenance.

PROTECTING THE PUMP

To protect the pump from damage caused by mineral deposits or
freezing, use PumpSaver, Model 61350, to treat the pump. This
prevents freeze damage and lubricates the pistons and seals.
PumpSaver is available as an optional accessory. It is
not included with the power washer. Contact the nearest
authorized service center to purchase PumpSaver.
YOU MUST PROTECT YOUR UNIT FROM FREEZING
TEMPERATURES.
• Failure to do so will permanently damage the pump and render the
unit inoperable.
• Freeze damage is not covered under warranty.
To use PumpSaver, make sure the power washer is turned off
and disconnected from the water supply. Read and follow all the
instructions and warnings given on the PumpSaver container.

OTHER STORAGE INSTRUCTIONS

1. DO NOT store fuel from one season to another unless it has
been treated as described in Protect Fuel System.
2. Replace the fuel container if it starts to rust. Rust and/or dirt
in fuel can cause problems if it's used with this unit.
3. Cover the unit with a suitable protective cover that does not
retain moisture.
Storage covers can be flammable.
• DO NOT place a storage cover over a hot power washer.
• Let the equipment cool for a sufficient time before placing the
cover on the equipment.
4. Store the unit in a clean, dry area.
NOTE:
NOTE:

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