Trouble

Cause

Remedy

The motor fails to start or when running automatic stop

1. No power or socket is not good enough

2. Switch is broken

3. No oil in crank tank

4. Voltage too low

5. Motor burn out

1. Check power, repair socket

2. Change switch

3. Inject oil

4. Check voltage

5. Change motor

No jet from nozzle or pressure not stabile.

1. Nozzle blocked

2. Inlet hose broken

3. air in the pipe

4. filter blockage

1. Dredge nozzle

2. Check connector of inlet hose, drain air of hose or change inlet hose.

3. First check whether the connection of screw thread end of water inlet hose is tight, and then fill the inlet hose with water, next trigger the gun, and start the motor.

4. clean the filter.   

connector leakage

1. Screw of connector loosen

2. Seal broken

3. Quick connector not in proper position

4.  O-ring broken

1. Tighten screw

2.  Change seal

3. Re-insert quick connector

4. Change seal.

Crankcase heats

1. Too much oil

2. The friction between the connecting rod and the crankshaft caused by too little oil.

1. let out the extra oil.

2. dismantle the pump to remove friction marks of the connecting rod and crankshaft.

No water or too little water from the gun

1. the new pump cannot suck water

2. debris in the pump

3. water inlet and outlet check valve damaged

1. start the motor and fill the water inlet hose with the water to drain up the air in the hose

2. dismantle and repair the pump

3. change the check valve