Automatic Cool Down System (Thermal Relief); Adjustabel Pressure Setting; How To Stop Your Power Washer - Generac Power Systems 4040 PRO GAS PW 49ST Operator's Manual

Power washer
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Figure 25 – Choke Lever
9. After each starting attempt, where the engine fails to run,
always point the gun in a safe direction, and squeeze the spray
gun trigger to release high pressure.
10. If the engine fails to start after six pulls, move the choke lever
to the "OPEN" position, and repeat steps 6 through 10.
The high pressure stream of water that this equipment
produces can cut through skin and its underlying
tissues, leading to serious injury, possible amputation
or death. Spray gun traps high water pressure, even
when engine is stopped and water is disconnected,
which can cause injury.
• DO NOT allow CHILDREN to operate the power washer or play
nearby.
• Keep the high pressure hose connected to the pump and spray gun
while the system is pressurized.
• NEVER aim the spray gun at people, animals or electrical devices.
Serious injury will result.
• DO NOT secure the spray gun in the open position.
• DO NOT leave the spray gun unattended while the machine is
running.
• NEVER use a spray gun which does not have a trigger lock or
trigger guard in place and in working order.
• Always be certain the spray gun, nozzles and accessories are
correctly attached.
Contact with the muffler area can result in
serious burns. Exhaust heat/gases can ignite
combustibles, structures or damage the fuel
tank causing a fire.
• DO NOT touch hot parts and AVOID hot exhaust gases.
• Allow the equipment to cool before touching.
• Keep at least five (5) feet (152 cm) of clearance on all sides of the
power washer including overhead.
• It is a violation of California Public Resource Code, Section 4442,
to use or operate the engine on any forest-covered, brush-covered,
or grass-covered land unless the exhaust system is equipped with
a spark arrester, as defined in Section 4442, maintained in effective
working order. Other states or federal jurisdictions may have similar
laws.
• Replacement parts must be the same and installed in the same
position as the original parts.
Choke
Open
AUTOMATIC COOL DOWN SYSTEM (THERMAL
RELIEF)
If you run the engine on your power washer for 3-5 minutes without
pressing the trigger on the spray gun, circulating water in the pump
can reach temperatures above 125°F. The system engages to cool
the pump by discharging the warm water onto the ground.
ADJUSTABLE PRESSURE SETTING
Your pressure washer pump is equipped with a feature that allows
you to adjust the pressure setting. The pump is preset at the
factory to achieve the highest possible pressure. To decrease the
pressure, turn the pressure control knob counterclockwise to the
desired pressure. Turning the pressure control knob clockwise until
it stops will set the pressure back to the factory setting.

HOW TO STOP YOUR POWER WASHER

1. Release the spray gun trigger.
2. Move the throttle control lever on the engine to the "LOW"
(turtle) position (Figure 26).
Figure 26 – Throttle Position
High
3. Turn the engine ON/OFF switch to the "OFF" position.
4. ALWAYS point the spray gun in a safe direction, and the
squeeze spray gun trigger to release retained high water
pressure. Engage the trigger lock when not in use.
5. Turn OFF the water supply.
IMPORTANT: The spray gun traps high water pressure, even when
the engine is stopped and the water is disconnected.
The high pressure stream of water that this equipment
produces can cut through skin and its underlying
tissues, leading to serious injury, possible amputation
or death. Spray gun traps high water pressure, even
when engine is stopped and water is disconnected,
which can cause injury.
• Keep the high pressure hose connected to the pump and spray gun
while the system is pressurized.
• ALWAYS point the spray gun in a safe direction, squeeze the spray
gun trigger to release high pressure every time you stop the engine.
Engage the trigger lock when not in use.
Operation
Low
13

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