18
State
(3)
Pressure
decreases if
the dischage
valve is
opened
(4) Spraying hose vibration
(5) Noise
(6) Liquid leak/oil leak
Nozzle
Power sprayer
Hose
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
Nozzle worn out
Replace
Excessive nozzle spray volume
Replace with a proper nozzle
Low water intake volume
See (1)
Too long spray hose
Set the proper length
Too thin spray hose
Set the proper thickness
Water leak from hose connection
Repair/replace
Air chamber filled with water
Open suction line to allow air in
(idling within 1 minute)
Poor pressure control valve motion
Disassemble/adjust
Water intake/pressurizing line error
Disassemble/adjust
(clogging, looseness)
Nozzle clogged
Clean
V pulley fastening bolt loosened
Retighten/replace
Connection rod bolt, etc. loosened
Retighten
Bearing broken
Replace
Pressure control valve assembly error
Adjust
Air intake
Check
O-ring damaged
Replace
Seal packing damaged
Replace
Oil seal damaged
Replace
Tightening/assembly error
Disassemble/adjust
Cause
Action
Troubleshooting and Actions for Power Sprayer