PROBLEM
Engine will not start or stops while
operating.
Engine is overloaded.
Water or oil leaking from bottom of pump.
Pressure increases when gun is closed.
Engine running but pump not building
maximum pressure or has irregular
pressure.
No intake of chemicals
Trigger will not move.
Water in crankcase.
Noisy operation.
Rough/pulsating operation with pressure
drop.
High crankcase temperatures.
POSSIBLE CAUSE
Low-oil shutdown.
Engine switch not in the “ON” position.
Pressure build up in hose.
Nozzle partially blocked.
Excessive pressure.
A small amount of leakage is normal.
Bypass valve not operating properly.
Faucet closed
Unit has been stored in freezing
temperatures.
Inadequate water supply.
Water inlet screen clogged.
Kink in garden hose.
Wand nozzle worn or damaged.
Air in pump.
Suction or discharge valves clogged or
worn out.
By-pass valve not operating effectively.
Injection tube not securely inserted into
unit.
Tube cracked or split.
Wrong nozzle.
Injection tube strainer clogged.
Nozzle blocked.
Dried chemicals in injector.
Gun safety lock engaged.
High humidity.
Worn seals.
Worn bearings
Air mixed with water.
Worn packing.
Inlet restriction.
Unloader.
Air mixed in water.
Wrong grade of oil.
Improper amount of oil in crankcase.
CORRECTION
Fill engine with oil.
Turn switch “ON”.
Squeeze trigger.
Clean nozzle.
Reduce pressure by using pressure
adjustment knob
If excessive leaking occurs call the
Customer Service Department.
Call the Customer Service Department.
Open faucet.
Thaw out unit completely including hose,
gun and wand.
Provide a minimum of 4 gpm at 20 psi.
Clean screen.
Straighten hose
Replace nozzle,
Let run with gun open and wand removed
until steady stream of water is released.
Call the Customer Service Department.
Call the Customer Service Department.
Push firmly into injector.
Replace tubing.
Switch to low pressure nozzle.
Clean strainer.
Clean nozzle.
Dissolve by running warm water trough the
injection tube.
Release safety lock.
Change oil more frequently.
Call the Customer Service Department.
Call the Customer Service Department.
Check inlet lines for restrictions and /or
proper sizing.
Call the Customer Service Department.
Check system for stoppage, air leaks,
correctly sized inlet plumbing to pump.
Check unloader for proper operation.
Check inlet lines for restrictions and/or
proper sizing.
Use recommended oil.
Adjust oil level to proper amount.
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