BXA • 8.917-989.0 • Rev. 12/13
PRESSURE
W
ASHER
T
roub
leshooting Guide
14
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
LOW OPERATING
PRESSURE
Faulty pressure gauge
Install new gauge.
Insuffi cient water supply
Use larger supply hose; clean fi lter at water
inlet.
Old, worn or incorrect spray nozzle
Match nozzle number to machine and/or
replace with new nozzle.
Belt slippage
Tighten or replace; use correct belt.
Plumbing or hose leak
Check plumbing system for leaks. Re-tape
leaks with tefl on tape.
Faulty or mis-adjusted unloader
valve
Adjust unloader for proper pressure. Install
repair kit when needed.
Worn packing in pump
Install new packing kit.
Fouled or dirty inlet or discharge
valves in pump
Clean inlet and discharge valves.
Worn inlet or discharge valves
Replace with valve kit.
Obstruction in spray nozzle
Remove obstruction.
Leaking pressure control valve
Rebuild or replace as needed.
Slow engine RPM
Set engine speed at proper specifi cations.
Pump sucking air
Check water supply and possibility of air
seepage.
Valves sticking
Check and clean or replace if necessary.
Unloader valve seat faulty
Check and replace if necessary.
FLUCTUATING
PRESSURE
Worn or dirty pump valves
Call local distributor.
Nozzle is obstructed
Blow out or remove debris with fi ne needle.
Pump sucking air, inlet hose
leaking
Check that all hoses and fi ttings are airtight.
Turn off machine and trigger spray gun until
a steady fl ow of water emerges through the
nozzle.
Insuffi cient water supply
Turn water on full force. Check garden hose
for kinks, leaks or blockage.
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.
Out of gas
Fill fuel tank.
Water in gasoline
Drain gas tank; fi ll with clean fuel.
ENGINE IS
OVERLOADED
Nozzle partially blocked
Clean nozzle.
Excessive pressure from high
engine RPM
Adjust engine throttle to lower RPM.
