18
Maintenance
Troubleshooting
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
ENGINE WILL NOT RUN
No fuel Replenish supply.
Low battery Charge battery.
Poor battery cable connection Clean battery terminals and check cables.
Refer to provided engine manual for additional troubleshooting
NO WATER FROM
PRESSURE NOZZLE
Pressure nozzle clogged Clean pressure nozzle.
Inlet water screen clogged Clean.
Pump sucking air
Fill the detergent container. Check for loose
hose clamps or fittings.
POOR OR NO
DETERGENTFLOW
Low detergent level Replenish supply.
Detergent screen clogged Clean.
Detergent metering valve not
opening
Check that handle or knob is not slipping on
shaft.
Pressure nozzle clogged Clean.
LOW PRESSURE FROM
SPRAY NOZZLE
Inlet clogged Clean.
Spray nozzle worn or incorrect
size
Replace.
Inadequate water supply Increase water supply.
Pump sucking air
Fill the detergent container. Check for loose
hose clamps or fittings.
UNLOADER VALVE CYCLES
WHEN TRIGGER GUN IS
OPEN OR CLOSED
Air in system Open and close trigger gun several times.
Defective unloader valve Repair or replace.
Water leak between unloader
valve and trigger gun
Check fittings, hose and trigger gun for leaks.
Repair or replace.
BURNER WILL NOT
IGNITE WHEN TRIGGER
GUN IS OPEN
No fuel Replenish supply.
Adjustable thermostat set too low Raise temperature setting.
Defective pressure switch Repair or replace.
Electrodes are dirty or out of
adjustment
Refer to Oil Burner Manual provided with
machine.
No AC generator output Check AC generator.
BURNER SMOKES OR HAS
OBNOXIOUS ODOR
Air bands need to be adjusted
Readjust. Refer to Oil Burner Section under
Installation.
Improper fuel
Use kerosene, #1 Grade Home Heating Oil, #1
or #2 Diesel Fuel.
DO NOT USE GASOLINE.
Hotsy Gas Belt Drive Series Operator’s Manual 8.931-236.0 - BD
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