PG SERIES PRESSURE WASHER OPERATOR’S MANUAL
21
LANDA PG • REV. 9/02
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
LOW OPERATING
PRESSURE
Insufficient water supply. Closed
faucet
Use larger garden hose; clean inlet water
screen. Open faucet.
Old, worn or incorrect spray nozzle Match nozzle number to machine and/or
replace with new nozzle.
Plumbing or hose leak Check plumbing system for leaks. Retape leaks
with teflon tape.
Faulty or misadjusted unloader
valve
Adjust unloader for proper pressure. Install
repair kit when needed. Call Landa technical
support.
Worn packing in pump Call Landa technical support.
Machine has been stored in
freezing temperatures
Thaw out machine completely, including hose,
spray gun and wand.
Slow engine RPM Call Landa technical support.
FLUCTUATING
PRESSURE
Worn pump valves Call Landa technical support.
Dirt in pump valves Call Landa technical support.
Pump sucking air Check all pump lines and connections.
PRESSURE LOW
AFTER PERIOD OF
NORMAL USE
Nozzle worn Replace nozzle.
Unloader valve worn Replace unloader valve.
ENGINE WILL NOT
START OR STOPS
WHILE OPERATING
Low oil shutdown Fill engine with oil.
ENGINE IS
OVERLOADED
Nozzle partially blocked Clean nozzle.
Excessive pressure from high
engine RPM
Adjust engine throttle to lower RPM.
WATER OR OIL LEAKING
FROM BOTTOM OF PUMP
A small amount of leaking is
normal
If excessive leaking occurs, call Landa
technical support.
PRESSURE INCREASES
WHEN SPRAY GUN IS
CLOSED
Unloader valve not operating
properly
Call Landa technical support.
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 Call Landa technical support.
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