8
MAINTENANCE
Cleaning
4. Reassemble in reverse order. Turning the control knob counterclockwise will reduce spring
tension for easy pump installation. Note that the guide tabs at the back of the pump must line
up with the gun housing. Firmly tighten the pump locking screw to insure it does not loosen
during operation. Check for correct pump positioning as shown.
Correct Incorrect
5. Dip suction tube into varsol or oil and spray for two seconds.
Then hold the gun with the suction tube out of the varsol (or
oil) and spray until empty. Another method is to remove the
suction tube, turn the gun upside down and pour a little oil
(or penetrating oil) into the forward pump hole. Hold your
finger lightly over the
suction hole
and spray until empty.
This will ensure that the spray gun is properly lubricated for
it’s next use.
Warning: NEVER put your fingers over the
spray nozzle.
6. Using a brush or rag dipped in thinners, clean the outside of
the spray gun. Do not submerge the spray gun in any liquids.
7. Wiping the gun with an oily rag will restore the gun’s new look and make it easier to clean the
next time.
8. Remember - A clean gun will always reward you with trouble free spraying.
Freeing a Seized Piston
This condition is usually caused by incomplete cleaning. Use the following procedure to rectify:
a) Remove nozzle, paint container, suction tube, and locking screw. If the valve is not
stuck, remove it too.
b) Remove pump assembly from gun and clean off all fresh paint with compatible thinners.
c) Place pump assembly into container of lacquer thinner for 1/2 an hour (longer if neces-
sary).
Caution
- read the warnings on lacquer thinner label before using.
d) GENTLY pull piston out of pump cylinder. If the valve was stuck, gently pull it out or use
the piston to push it out. Thoroughly clean all parts. The inside of the pump cylinder is
best cleaned with a 3/8” brush as shown on page 10.
e) Reassemble the spray gun.
suction hole
Loosen locking screw and push
pump in and up to position properly.
Pump sits level and
shows no gaps.
Gap.
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