This will activate the starter. Continue holding in the low oil pressure switch until the oil pressure gage
indicates 20 psi or more; then release the oil pressure switch. As soon as the engine starts, release the
start-magneto switch, which will go to the RUN position. The switch is spring-loaded to the RUN
position, and the engine will continue operating. If the engine does not start, pull out the choke and try
again. When the engine starts, push the choke back in.
NOTE: The governor on the engine is factory set to control the engine speed at 3,850 RPM. If the
engine will not operate at 3,850 RPM, notify organizational maintenance personnel.
Step 9. Adjust the throttle to the desired pump speed. Increase engine RPM by pushing the throttle in or
by rotating the throttle clockwise until approximately 3,850 RPM is indicated on the tachometer. When
the pump is fully primed, the sound of the pump will change noticeably.
Step 10. Both the pressure gage and vacuum gage initially indicate zero. The pump suction vacuum
gage may be indicating from 0 to 15 inches of mercury, depending on the height of the pump above the
level of water. When the pump is fully primed, the pressure gage indication should be from 60 to 120
Close valve 4 before the prime-detergent tank is empty. If this valve is not
closed, all vacuum or pressure will be lost due to air in the pump.
Step 11. Immediately close valve 4 when the pump is fully primed.
Step 12. Pump the tank unit full of water to the desired level. Remove the hopper-blender cover.
Observe the water level on the tank liquid level indicator to see that it is satisfactory. Refill the prime-
detergent tank with water. Replace the cover and lid.
Step 13. Release trapped air in the piping and discharge hoses by opening the valves on the discharge