Specifications

HPB 97-6131 • REV. 5/06
OPERATOR’S MANUAL
PRESSURE WASHER
20
MAINTENANCE
FUEL AIR ADJUSTMENT: BECKETT
FUEL AIR ADJUSTMENT: WAYNE
Fuel Pressure Adjustment:
To adjust fuel pressure, turn the adjusting screw with a
standard screwdriver (located on the fuel pump) clock-
wise to increase, counterclockwise to decrease. Do not
exceed 200 PSI.
Air Adjustment
Machines are preset and performance tested at the
factory — elevation 100' above sea level. A one time
correction for your location will pay off in economy,
performance and extended service life. If a smoky or
eye-burning exhaust is being emitted from the stack,
two things should be checked.
First, check the fuel to be certain that kerosene or No.
1 home heating fuel is being used.
Next, check the air adjustment on the burner. An oily,
black, smoky fire indicates a lack of air and the air
band should be moved to allow the air to flow through
the burner. Sharp, eye-burning white fumes indicate
too much air flowing through the combustion chamber.
The air band should be moved to allow less air to flow
through the burner.
To adjust: start machine and turn burner ON. Loosen
the two locking screws found in the air shutter openings
(refer to illustrations) and close air shutter until black
smoke appears from burner exhaust vent. Note air band
position. Next, slowly open the air shutter until white
smoke just starts to appear. Turn air shutter halfway
back to the black smoke position previously noted.
Tighten locking screws.
If the desired position cannot be obtained using only
the air shutter, lock the air shutter in as close a position
as can be obtained, then repeat the above procedure
on the air band setting.
Air Band
Adjustment
Screw
Pressure
Gauge Port
Air Band
Fuel Pump
Pressure
Adjustment
Screw
Air Band
Transformer
Fuel
Pump
Pressure
Adjustment Screw
Air Band
Adjustment
Screw
Pressure
Gauge Port