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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.
IMPORTANT: Always keep the trigger lock on the spray
gun in the locked position while making adjustments to the
system.
1. Using a wrench, loosen the bolt 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.
n
Trigger
1/32" to 1/16" Gap
(bolt on back)
3. Tighten the set screw securely.
Replacing the PRIME/SPRAY Valve
Perform the following procedure using PRIME/SPRAY valve
replacement kit P/N 800-915 or 700-258.
1. Drive the groove pin out of the valve handle.
2. Remove the valve handle and the cam base.
3. Using a wrench, loosen and remove the valve housing
assembly from the pump manifold.
4. Make sure the gasket is in place and thread the new
valve housing assembly into the pump manifold. Tighten
securely with a wrench.
5. Place the cam base over the valve housing assembly.
Lubricate the cam base with grease and line up the cam
with the pump manifold using the dowel pin.
6. Line up the hole on the valve stem with the hole in the
valve handle.
7. Insert the groove pin into the valve handle and through the
valve stem to secure the valve handle in position.
Dowel Pin
n
Valve Stem
Gasket
Pump
Manifold
Valve Housing
Assembly
Valve
Cam Base
Cleaning or Replacing the Filters
Pump Filter
1. Loosen and remove the lter housing by hand. Pull the
lter out of the pump manifold.
2. Slip the lter off of the lter support spring.
3. Inspect the lter. Based on inspection, clean or replace
the lter.
4. Inspect the lter seal. Based on inspection, clean or
replace the lter seal.
5. Slide the new or cleaned lter over the lter support spring
with the adapter in place. Push the lter into the center of
the pump manifold.
6. Slide the lter housing over the lter and thread it into the
pump manifold until secure.
NOTE: The lter housing should be hand-tightened, but
make sure the lter housing is seated fully into
the pump manifold.
Filter
Spring
Adapter
Filter Support Spring
Filter Seal
Pump Manifold
Filter
Filter
Gun Filter
1. Move the gun trigger lock to the unlocked position.
2. Loosen and remove the handle from the gun body.
3. Turning clockwise, unscrew the lter from the gun body.
NOTE: Left-handed threads require turning the lter
clockwise to remove.
4. Turning counterclockwise, screw the new or cleaned lter
into the gun body.
5. Make sure the handle seal is in position and thread the
handle into the gun body until secure.
6. Move the gun trigger lock to the locked position.
Gun
Housing
Filter
Handle
Seal
NOTE: For more detail, part number information, and
complete assembly drawings, please see the LX-
80II Professional Airless Gun Owner’s Manual
(P/N 313-2293).
