VSS 10-12
START-UP AND TESTING - CONT.
8. Turn engine switch on.
9. Choke engine.
10. Start engine and adjust throttle. Once engine is running and warmed up, un-choke the
engine.
11. Liquid should be visible after a few seconds as it moves through the suction hose. Liquid
agitation in the tank should also be visible. Run the engine at full throttle until there is no
air in the suction lines. Lower the engine speed to about 1/2 throttle.
12. Turn the regulator pressure-adjustment knob counter-clockwise until there is no longer
any resistance. Rotate the black plastic lever clockwise to the spray position.
(See photos 10 and 12) Slowly turn the adjustment knob clockwise. Note the increasing
pressure on the gauge. Adjust to the desired pressure for your application. (See photos
13 and 14)
Although the pump and engine can safely operate at full throttle, reducing the engine
speed to the minimum required for your application will ensure fuel savings and reduce
wear of the pump.
Photo 13 Kappa 43 Pressure Adjustment Photo 14 Kappa 40/55/75 Pressure Adjustment
13. Shut off the engine and clean the filter. There may be small plastic particles remaining
from the manufacturing process. See the Maintenance section (page 13) for instructions.
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