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Adjusting the Trigger Tension
Use the following procedure to adjust the spring tension of the
trigger lever on the gun holder assembly. The trigger lever
pulls and releases the spray gun trigger when operated from
the trigger on the cart. The proper tension ensures that the
gun will shut off when the gun trigger is released. To ensure
proper tension, there should be approximately a 1/32” to 1/16”
gap between the trigger lever and the spray gun trigger.
Always keep the trigger lock on the spray gun in the
locked position while making adjustments to the system.
1. Using a 5/32” hex wrench, loosen the set screw on the
cable block.
2. Move the cable block in the appropriate direction to create
a gap of 1/32” to 1/16” between the trigger lever and spray
gun trigger.
a. Slide the cable block toward the gun to increase the
gap between the trigger lever and spray gun trigger.
b. Slide the cable block away from the gun to decrease
the gap between the trigger lever and spray gun trigger.
3. Tighten the set screw securely.
Preparing a New Sprayer
If this unit is new, it is shipped with test fluid in the fluid section
to prevent corrosion during shipment and storage. This fluid
must be thoroughly cleaned out of the system with mineral
spirits before you begin spraying.
Always keep the trigger lock on the spray gun in the
locked position while preparing the system.
1. Place the suction tube into a container of mineral spirits
that has a flash point of 60ºC (140ºF) or above.
2. Place the return hose into a metal waste container.
3. Turn the pressure control knob fully counterclockwise to
its lowest pressure setting.
4. Move the PRIME/SPRAY valve to the PRIME position.
5. Move the engine ON/OFF switch to the ON position.
6. Start the engine:
a. Open the fuel valve
lever.
b. Move the throttle
lever away from the
gas tank.
c. Close the engine
choke lever.
d. Holding the frame
with one hand, pull
the starter rope
rapidly and firmly. Continue to hold the rope as you let
it return. Pull and return the rope until the engine
starts.
Fuel Valve
Lever
Choke Lever
Engine
ON/OFF
Switch
Throttle
Lever
Starter Rope
CAUTION
Spray Gun
Trigger
Trigger Lever
1/32" to 1/16" Gap
Cable Block
(set screw on back)
CAUTION
7. Turn on the sprayer by moving
the pump ON/OFF switch to the
ON position.
8. Slowly turn the pressure control
knob clockwise to increase the
pressure until fluid starts to
come out of the return hose.
Use only enough pressure to
keep the fluid coming out.
9. Allow the sprayer to run for
15–30 seconds to flush the test fluid out through the
return hose and into the waste container.
10. Turn the pressure control knob fully counterclockwise to
its lowest setting.
11.Turn off the sprayer by moving the pump ON/OFF switch
to the OFF position.
Preparing to Paint
Before painting, it is important to make sure that the fluid in the
system is compatible with the paint that is going to be used.
Always keep the trigger lock on the spray gun in the
locked position while preparing the system.
1. Place the suction tube into a container of the appropriate
solvent for the material being sprayed (refer to
recommendations of the material manufacturer). An
example of the appropriate solvent is water for latex paint.
2. Place the return hose into a metal waste container.
3. Turn the pressure control knob fully counterclockwise to
its lowest pressure setting.
4. Move the PRIME/SPRAY valve to the PRIME position.
5. Move the engine ON/OFF switch to the ON position.
6. Start the engine:
a. Open the fuel valve lever.
b. Move the throttle lever away from the gas tank.
c. Close the engine choke lever.
d. Holding the frame with one hand, pull the starter rope
rapidly and firmly. Continue to hold the rope as you let
it return. Pull and return the rope until the engine
starts.
7. Turn on the sprayer by moving the pump ON/OFF switch
to the ON position.
8. Slowly turn the pressure control knob clockwise to
increase the pressure until fluid starts to come out of the
return hose. Use only enough pressure to keep the fluid
coming out.
9. Allow the sprayer to run for 15–30 seconds to flush the old
solvent out through the return hose and into the metal
waste container.
10. Turn the pressure control knob fully counterclockwise to
its lowest setting.
11.Turn off the sprayer by moving the pump ON/OFF switch
to the OFF position.
12. Move the PRIME/SPRAY valve to the SPRAY position.
13. Turn on the sprayer.
14. Turn the pressure control knob slowly clockwise to
increase pressure.
15. Unlock the gun by turning the gun trigger lock to the
unlocked position.
NOTE: Make sure that the spray gun does not have a
tip or tip guard installed.
CAUTION
NOTE: Incompatible fluids and paint may cause the
valves to become stuck closed, which would
require disassembly and cleaning of the
sprayer’s fluid section.
Pressure
Control
Knob
Pump
ON/OFF
Switch
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