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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 pump oil SAE30W non-detergent and fill only to the
center of the oil sight glass. DO NOT overfill.
QUICK COUPLERS: There is an o-ring seal inside the female quick
coupler. This o-ring will deteriorate or, if the unit is allowed to pump
without the high pressure hose or nozzle attached, the o-ring may be
blown out occasionally. Simply insert a replacement o-ring to correct
the leak. (Additional o-rings can be purchased from your dealer.)
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.
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 the 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.
a. If the test is greater than a #3 smoke, turn the shutter arm
counterclockwise to increase the air flow into the combustion
chamber.
b. If the test is yellowish in color, turn the shutter arm clockwise to
decrease the air flow into the combustion chamber.
3. Hold onto the air shutter adjusting arm and loosen the locking nut.
Move the shutter in 1/8" increments and retighten the locking nut after
each 1/8" movement.
4. Trigger the gun on and off slowly to make sure there is proper ignition.
Slight or no puffing on the ignition, and a smoke spot test of 0-3 is
good.
maintenance
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