The Pump Will Not Build Water Pressure; Water Will Not Discharge From The Discharge Hose - QTAC 20S Owner's Manual

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Ensure that the engine throttle is open slightly from the idle position.
Adjust the choke. If the engine is cold, full choke will likely be needed.
Ensure that fuel exists in the fuel tank.
Pump the priming bulb on the carburetor to ensure fuel is in the carburetor.
For further troubleshooting information, see the Honda Owner's Manual

The Pump Will Not Build Water Pressure

Ensure that the pump engine is running and operating at a sufficient speed.
Ensure that there is sufficient water in the water tank. There should be enough
water in the water tank so that the water level is visible in the water tank site
gauge (Figure 1, Item 5)
Unless the draft hose kit is in use, ensure that the pump intake selection valve is
open so that the pump is drawing water from the water tank and not from the
draft port (Figure 2, Item 7).
Ensure that the pump drain port plug is properly tightened and sealed (Figure 2,
Item 5).
Ensure that the pump is properly primed with water. Remove the cap from the
pump prime port and fill the pump as needed (Figure 2, Item 1). If foaming
mixtures have been used in your QTAC recently, ensure that all the foam has
been forced from the pump by continually pouring water into the prime port until
all the foam has been displaced.
Check the piping on the suction side of the pump to ensure that no air leaks are
present.
For further troubleshooting information, see the pump Instruction Manual.

Water Will Not Discharge From The Discharge Hose

Ensure that the pump engine is running and operating at a sufficient speed.
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