Operation
Shutdown and Care
1. Check
wet-cup (A) daily
. See Fig 5. First relieve
pressure and remove wet-cup plug. Keep wet-cup
1/3 full with Graco Throat Seal Liquid at all times
to help prevent material from building up on piston
rod which causes packings to wear prematurely
.
T
ighten wet-cup, which is also packing nut, just
enough to stop leakage. Overtightening wet-cup
may cause packings to bind and wear out quickly
.
Use screwdriver and light hammer to adjust wet-
cup.
2.
Clean fluid filter (B) often and whenever sprayer is
stored. First relieve pressure. See manual
307–273 for cleaning procedure.
3.
Fill connecting rod cavity (C) with motor oil every
100 hours of operation. First relieve pressure and
then remove front cover
.
4.
For short shutof
f periods, leave pump in the mate
-
rial, relieve pressure, and clean spray tip.
04347A
Fig 5
C
A
B
5.
Before storing sprayer
, flush thoroughly
, leaving a
coating of mineral spirits, then relieve pressure.
6.
Coil hose and hang on cart handle for protection.
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