9.800-416.0 • Rev. 08/12
13
PRESSURE
W
ASHER
T
roub
leshooting Guide
PROBLEM
POSSIBLE CAUSE
SOLUTION
PRESENCE OF
WATER
IN PUMP OIL
Water sprayed at machine
Change oil. Direct spray away from
machine.
High humidity in air
Check and change oil twice as often.
Piston packing worn. Oil seal worn
Check and replace if necessary.
ENGINE STRAINS
UNDER LOAD
Engine governor misadjusted
Readjust governor on engine. Take to local
engine representative for adjustment.
Incorrect spray nozzle
Install proper nozzle size (See serial plate
for proper size).
Obstruction in spray nozzle
Remove obstruction.
Misadjusted unloader valve
Contact local dealer or technical support.
Engine low or out of oil
Check oil level.
Pump low or out of oil
Check oil level.
Obstruction in hose, fi tting
Clean or replace hose, fi tting.
Gasoline engine altitude
The gasoline engine is preset for opera-
tion at altitudes below 1000 feet above sea
level. If operated at higher altitudes, it may
be necessary to install a high altitude main
jet carburetor. Contact your local authorized
engine sales and service center for details.
OIL SQUIRTS OUT OF
OIL CAP ON PUMP
Pump overfi lled with oil
Maintain oil level at red dot on sight glass at
rear of pump or at top of notch on dipstick
(where applicable).
ENGINE OPERATES
FOR 15 MINUTES
THEN STOPS
Not enough gas or engine oil
Fill tank with gas. Check oil level.
Vapor lock developed by heat of
day
Keep gas tank full to avoid vapor lock.
Obstruction in fuel fi lter
Clean or replace fuel fi lter.
WATER DRIPPING
FROM UNDER PUMP
Piston packing worn
Check and replace if necessary.
O-ring plunger retainer worn
Check and replace if necessary.
Cracked piston
Check and replace if necessary.
OIL DRIPPING
Oil seal worn
Check and replace if necessary.
EXCESSIVE
VIBRATION IN
DELIVERY LINE
Irregular functioning of the valves
Check and replace if necessary.
WATER LEAKING
FROM PUMP
PROTECTOR
Spray gun closed with machine
running 5 minutes or longer.
Open spray gun or turn off machine.
Excessive water supply pressure
Place a pressure regulator at end of 50'
garden hose.
TROUBLESHOOTING
