
Improper electrode setting Clean and test according to diagram in operator's manual. Fuel not reaching combustion chamber Check fuel pump for proper flow. Check solenoid valve on machines with spray gun control for proper on-off flow switch. Fuel solenoid malfunction Check by placing screwdriver inside coil then turn machine on, open spray gun and check for magnetic pull. Clogged burner nozzle Replace. Water not turned on Turn on water to activate burner pressure switch. Pressure switch malfunct