824120 5
Pressure Relief Procedure
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you
D Are instructed to relieve the pressure
D Stop spraying for more than 10 minutes
D Check or service any of the system equipment
D Install or clean the spray nozzle
WARNING
1. Engage the trigger safety latch.
2. Turn the pressure washer off, and remove the
ignition cable from the spark plug..
3. Shut off the water supply.
4. Disengage the trigger safety latch, and trigger the
gun to relieve pressure. Then engage the trigger
safety latch.
If you suspect that the spray tip or hose is clogged or
that pressure has not been fully relieved after following
the steps above: Disengage the trigger safety latch,
and trigger the gun to relieve pressure. Wrap a rag
around the hose end coupling, and VERY SLOWLY
loosen the coupling to relieve pressure gradually. Then
loosen it completely. Then clear the tip or hose.
Operation
Startup
Always use this startup procedure to ensure that the
pressure washer is started safely and properly.
D Always engage the gun trigger safety latch when
you stop spraying even for a moment. This reduces
the risk of fluid injection or splashing in the eyes or
on the skin if the gun is bumped or triggered acci-
dentally.
D Always observe the CAUTIONS in this section to
avoid costly damage to the pressure washer.
D If you use the Sandblaster Kit, see the Sandblaster
Kit manual for detailed cleaning information.
1. Check the oil level.
NOTE: All pressure washers are equipped with a
low-oil sensor that shuts the engine off if the oil level
falls below a certain level. If the engine stops unex-
pectedly, check the oil and the fuel levels. Check the
oil level each time you add fuel.
2. Check fuel level.
WARNING
FIRE HAZARD
Do not refuel a hot engine. Refueling a
hot engine could cause a fire. Use only
fresh, clean, regular or unleaded gasoline. Close
the fuel shutoff valve during refueling.
3. Turn on the water supply.
CAUTION
Never run the pressure washer without water. Costly
damage to the pump will result. Always be sure the
water supply is completely turned on before you run
the pressure washer.
4. Trigger the gun until water sprays from the tip
indicating that the air is purged from the system.
5. Open the fuel shutoff valve. Be sure the spark plug
ignition cable is pushed firmly onto the spark plug.
Put the engine switch in the ON position, and put
the throttle in the RUN position.
CAUTION
Do not allow the pressure washer to idle for more
than 10 minutes. Doing so could cause the
recirculating water to overheat and seriously
damage the pump. Turn off the pressure washer if
it will not be spraying at least every 10 minutes. If
heated inlet water is used, reduce this time more.
Do not operate the pressure washer with the inlet
water screen removed. This screen helps keep
abrasive sediment, which could clog the pump or
damage the pump cylinders, out of the pump. Keep
this screen clean. Do not pump caustic materials;
such materials could corrode the pump
components.
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