308620
10
Startup
7.
Prime the pump:
a.
Place the suction tube in the bucket of paint,
water, or solvent.
b.
Open the pressure drain valve.
c.
Set engine speed to idle.
d.
Move the pressure control switch to ON. Turn
the pressure adjusting knob slowly until the
sprayer starts.
e.
Run the pump until fluid is flowing smoothly
from the pressure drain valve, indicating the
pump is primed.
f.
Move the pressure control switch to OFF.
g.
If the pump was primed with water or solvent,
remove the suction tube from the water or
solvent and place it in the paint. Repeat steps
b through f.
h.
Close the pressure drain valve.
8.
When the pump is primed:
a.
Remove the spray tip.
b.
Set the engine speed to full flow.
c.
Move the pressure control switch to ON. Turn
the pressure adjusting knob slowly until the
sprayer starts.
d.
Unlock the gun trigger safety.
e.
Trigger the gun into the pail until fluid flows
from the gun. If pumping solvent or solvent–
based paint, hold a metal part of the gun firmly
against a grounded metal pail.
f.
Release the gun trigger and lock the gun
trigger safety.
g.
Move the pressure control switch to OFF.
h.
Relieve pressure by opening the pressure
drain valve.
i.
Close the pressure drain valve.
WARNING
INJECTION HAZARD
To reduce the risk of serious injury from
fluid injection, never operate the spray
gun with the tip guard removed.
9.
Install the spray tip in the gun.
See the separate
tip instruction manual, 308–644, supplied.
10. Move the pressure control switch to ON.
11.
Adjust the engine speed and pump pressure.
Unlock the gun trigger safety. Trigger the gun onto
a test paper to check the spray pattern and atom-
ization. Turn the pressure adjusting knob until you
get a good pattern. Then slowly lower the throttle
setting as far as you can without changing the
spray pattern.
CAUTION
Always use the lowest needed fluid pressure and the
lowest needed throttle setting, to increase the life of
the sprayer. Higher settings cause excessive clutch
cycling, premature tip wear and premature pump
wear.
CAUTION
Close the black fuel shutoff lever whenever you are
transporting the sprayer to prevent fuel from flooding
the engine.
Keep the sprayer upright and level when operating it
and when transporting it. This prevents crankcase oil
from leaking into the combustion chamber, which
makes startup very difficult.
