Troubleshooting
10 309414N
Engine operates, but dis-
placement pump does not
operate continued
Clutch is worn, damaged, or incor-
rectly positioned
Replace clutch. Manual 309890.
Pinion assembly is worn or damaged Repair or replace pinion assembly. Manual
309890.
Pump output is low Strainer (31) is clogged Strainer (31) is clogged
Piston ball (206) is not seating Service piston ball. Manual 309277.
Piston packings are worn or dam-
aged
Replace packings. Manual 309277.
O-ring (227) in pump is worn or dam-
aged
Replace o-ring. Manual 309277.
Intake valve ball is not seating prop-
erly
Clean intake valve. Manual 309277.
Intake valve ball is packed with mate-
rial
Clean intake valve. Manual 309277. Do not
leave 233716 sprayer under pressure for more
than 5 minutes when spraying texture and not
actively spraying.
Engine speed is too low Increase throttle setting. Manual 309413.
Clutch is worn or damaged Replace clutch. Manual 309890.
Pressure setting is too low Increase pressure. Manual 309413.
Fluid filter (318), tip filter or tip is
clogged or dirty
Clean filter. Manual 309413 or 309093.
Large pressure drop in hose with
heavy materials
Use larger diameter hose and/or reduce over-
all length of hose. Use of more than 100 ft of
1/4 in. hose significantly reduces performance
of sprayer. Use 3/8 in. hose for optimum per-
formance (50 ft minimum).
Excessive paint leakage into
throat packing nut
Throat packing nut is loose Remove throat packing nut spacer. Tighten
throat packing nut just enough to stop leak-
age.
Throat packings are worn or dam-
aged
Replace packings. Manual 309277.
Displacement rod is worn or dam-
aged
Replace rod. Manual 309277.
Fluid is spitting from gun Air in pump or hose Check and tighten all fluid connections. Rep-
rime pump. Manual 309413.
Tip is partially clogged Clear tip. Manual 309093.
Fluid supply is low or empty Refill fluid supply. Prime pump. Manual
309413. Check fluid supply often to prevent
running pump dry.
Pump is difficult to prime Air in pump or hose Check and tighten all fluid connections.
Reduce engine speed and cycle pump as
slowly as possible during priming.
Intake valve is leaking Clean intake valve. Be sure ball seat is not
nicked or worn and that ball seats well. Reas-
semble valve.
Pump packings are worn Replace pump packings. Manual 309277.
PROBLEM CAUSE SOLUTION
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