QP2H CENTRIFUGAL PUMP • OPERATION AND PARTS MANUAL — REV. #0 (08/04/08) — PAGE 19
Figure 13. Choke Lever (Open)
Figure 14. Throttle Lever (Run)
CAUTION — Maximum Engine Speed
ALWAYS run engine at
full speed
while pumping.
Figure 15. Throttle Lever (Idle)
Figure 16. Engine ON/OFF Switch (OFF)
OPERATION
WARNING — High Pressure
Water must always be flowing through the pump casing while
the engine is running. Loss of flow may be the result of a loss of
prime, restricted water flow or a dead-head situation. Please
note that in such a condition, water in the pump can reach
temperatures of 150-200°F in 15 to 20 minutes. This can cause
serious burns if this hot water comes into contact with
unprotected skin. Before touching or opening the fill plug or
drain plug, first turn off the engine and allow the pump casing to
cool to the touch, and then open the pump carefully. Be cautious
of any built up water pressure.
8. Before the pump is placed into operation, run the engine for
several minutes.
9. Check for fuel leaks and noises that would be associated
with a loose component.Check for leaks
between pump
and engine. If water is leaking between the pump and
engine housing, the seal inside the pump may be worn or
damaged. Continued operation of the pump is not
recommended. Further usage of the pump under these
conditions may cause severe water damage to engine.
10. To begin pumping, place the throttle lever (Figure 14) in
the
RUN position
. If water is not flowing out of the
discharge port, turn off the engine and check for and clear
any obstructions within the suction hose.
STOPPING THE ENGINE
Normal Shutdown
1. Move the throttle lever to the
IDLE
position (Figure 15)
and run the engine for three minutes at low speed.
2. After the engine
cools
, turn the engine ON/OFF switch to
the OFF position (Figure 16).
3. Place the
fuel shut-off lever
(Figure 17) in the
OFF
position.
Figure 17. Fuel Valve Lever (OFF)
Emergency Showdown
1. Move the throttle lever quickly to the
IDLE
position, and
place the engine ON/OFF switch in the
OFF
position.
