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CHECKING OPERATION OF INLET VALVE
See Figure 14 for location of inlet valve. The inlet valve
should be checked if the sprayer draws up little or no paint.
It is a good practice to check inlet valve operation before
spraying. If the sprayer has been in storage, the inlet valve
may be sticky.
To check inlet valve operation, proceed as follows:
1. Turn priming knob to .
2. Turn ON-OFF switch ON.
3. Let inlet valve suck against the palm of your hand. If little
or no suction is felt repeatedly move the plunger in and
out to lift inlet valve stem, as shown in Figure 14. Put in
a few drops of light oil or cleaner.
SUCTION FILTER CLEANING
The suction filter is located on the end of the suction tube.
A clean suction filter gives full delivery capacity and a
constant level of spraying pressure. Clean the suction filter
as needed with a brush dipped in solvent.
THE PLUNGER DEVICE MUST BE LOOSENED PRIOR
TO ANY SERVICE OF THE OUTLET VALVE.
CAUTION
CHECKING OPERATION OF OUTLET
VALVE
The outlet valve should be checked if the sprayer draws up
little or no paint, or draws up paint, but doesn’t build
pressure. It is a good practice to check outlet valve opera-
tion before spraying. If the sprayer has been in storage, the
outlet valve may be sticky.
To check outlet valve operation, proceed as follows:
1. Turn priming knob to .
2. Turn ON-OFF switch to ON.
3. If above symptoms occur during priming of pump sim-
ply:
• Reduce pressure to 0.
• Push the plunger in and out to lift the ball off the seat.
See Figure 14.
NOTE
Your sprayer was shipped with two extra outlet valve
springs. Periodic replacement is necessary to maintain
top performance. Suggested replacement is every 35 to
50 hours of operation for best performance. Perodic
replacement of the outlet valve spring also increases the
life of the inlet valve.
OUTLET VALVE
PLUNGER
INLET VALVE PLUNGER
Figure 14.-Inlet & Outlet Valve Plungers