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maintenance
Storage & Maintenance Instructions
SPECIFIC MAINTENANCE
ENGINE: The engine instructions that accompany your unit detail specific
procedures for maintenance of the engine. Following the engine
manufacturer’s recommendations will extend engine work life.
PUMP: Change the pump oil after the first 50 hours of operation. After
initial change, every 3 months or 250 hour intervals are recommended.
If oil appears dirty or milky, changes may be required in greater
frequency. Use SAE20 or 30 non-detergent pump oil and fill only to
the center of the oil sight glass. DO NOT overfill.
NOZZLE: Water flow through the spray nozzle will erode the orifice,
making it larger, resulting in a pressure loss. Nozzles should be
replaced whenever pressure is less than 85% of the maximum. The
frequency of replacement will depend upon such variables as mineral
content in the water and number of hours the nozzle is used.
COUPLERS: There are o-ring seals inside the couplers which will
deteriorate. To replace, simply install a replacement o-ring to correct
the leak. (Additional o-rings can be purchased from your dealer.)
FUEL WATER SEPARATOR: The fuel filter has a built in water separator.
Occasionally the water has to be drained from the separator. Follow
the procedures listed below:
1. Check the collection bowl daily.
2. Ensure the unit is off and place an oil catch basin under the fuel
cartridge.
3. Loosen the drain plug to allow the fuel/water contaminants to flow into
the catch basin.
4. Retighten the drain plug when completed.
5. Dispose of drainage according to environmental regulations in your
area.
BURNER AIR ADJUSTMENT: The air shutter has been factory preset
for proper operation between sea level and 2000 feet elevation at
standard conditions (60°F ambient water and air temperatures). To
assure maximum combustion efficiency at colder temperatures and
higher altitudes, it will be necessary to adjust the air supply to the
combustion chamber. A smoke spot test is recommended during
any air shutter adjustment. This will aid in maximizing the burner
efficiency and avoid inefficient operation and excessive sooting of the
combustion chamber.
1. The machine must be running and the burner ON.
2. Take a smoke spot test to determine if more or less air is required for
proper combustion.
