14
Owner’s Manual
Trouble Shooting
• Engine wil not start or stops while operating.
Low-oil shutdown:
Fill engine with oil
Engine switch not in “ON” position:
Turn switch “ON”S
Pressure built up in hose:
Squeeze trigger while starting
• Engine is overloaded
Nozzle
partially
blocked
Clean
Nozzle
Excessive pressure
Shorten the spring coil on the reflux valve
• Pressure increases when gun is locked
Bypass valve blocking
Clean the bypass valve
• Engine is running but pump won’t build maximum pressure or has irregular pressure
Faucet
closed
Open
faucet
Unit has been stored in freezing temp. Thaw out unit completely
Inadequate water supply
Provide a minimum of 4 GPM at 20 PSI
Water inlet screen clogged
Clean screen
Kink in garden hose
Straighten garden hose
Wand nozzle worn or damaged
Replace nozzle
Air in pump
Run with gun open & wand removed
until
steady
stream
of
water
is
released
Adjustable pressure knob not set
Set to maximum position
to maximum position
Suction or discharge valves clogged
Clean the suction or discharge valves
or worn out
Bypass valve not operating effectively
Clean the bypass valve
• No intake of chemicals
Injection tube not securely inserted
Push firmly into injector
into
unit
Tube cracked or split
Replace tube
Wrong nozzle
Switch to low pressure nozzle
Injector turned off
Turn collar counter
• Trigger will not move
Gun safety lock engaged
Release safety lock
15
Owner’s Manual
Trouble Shooting
• Water in crankcase
High humidity
Change oil more frequently
Worn seals
Change the oil seals
• Noisy operation
Worn
bearings
Change
the
bearings
Air mixed with water
Check inlet lines for restrictions
and
/
or
proper
sizing
• Rough / pulsating, operating with pressure drop
Inlet restriction
Check system for stoppages, air leaks,
correctly
sized
inlet
plumbing
to
pump
Unloader
Check unloader for proper operation
Air mix in water
Check inlet lines for restrictions and or
proper
sizing
• High crankcase temperatures
Wrong grade of oil
Use recommended oil
Improper amount of
oil in crankcase
Adjust oil to proper amount
