5
2. Connect the high pressure hose to the power unit.
3. Pull and hold the trigger on the spray gun.
4. Pull the starter rope.
NOTE:
Attempting to pull the starter rope with the trigger closed or the high
pressure hose disconnected is very difficult. Connecting the high pressure
hose and opening the trigger prevents back-pressure on the engine and
makes starting the engine much easier. In addition, the engine is equipped
with a decompression valve which makes starting even easier.
5. Observe the instructions under "Starting – To Start Engine – Rewind Starter"
in the Briggs & Stratton Operating and Maintenance Instructions provided.
OPERATION
The GPW-2000-G and the GPW-3000-G utilize quick disconnect nozzles which
allow the user to switch between soap and rinse cycles. The nozzle with the
larger orifice delivers low pressure (200 PSI/13.8 BAR) and automatically
activates the siphon injector valve to apply soap or chemical. The mixing ratio
for the GPW-2000-G is approximately 32 parts water to 1 part chemical and 40 to
1 for the GPW-3000-G, depending on the viscosity of the chemical used. It takes
several seconds for the chemical to travel through the high pressure hose to
the nozzle. Chemical application is not instantaneous and chemical spray
continues for several seconds after switching to high pressure. The nozzles
with the smaller orifices deliver a full pressure, fresh water rinse. They are color
coded by spray pattern: Red = 0°, Yellow = 15°, Green = 25°, White = 40°.
To switch from one nozzle to the other simply:
1. Release the trigger to stop the spray action.
2. Pull back the locking collar to release nozzle.
3. Insert new nozzle until locking collar snaps into place.
