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Manual Karcher SGP 9.801-192.0 - H
OPERATOR’S MANUAL
PRESSURE WASHER
14
Fuel:
Use clean fuel oil that is not contaminated with water
and debris. Replace fuel filter and drain tank every 100
hours of operation.
Use No. 1 or No. 2 Heating Oil (ASTM D306) only.
NEVER use gasoline in your burner tank. Gasoline is
more combustible than fuel oil and a serious explo-
sion could result. NEVER use crankcase or waste oil
in your burner. Fuel unit malfunction could result from
contamination.
Fuel Control System:
These machines utilize a fuel solenoid valve located on
the fuel pump to control the flow of fuel to the combus-
tion chamber. This solenoid valve, which is normally
closed, is activated by a flow switch when water is flow-
ing through it. When an operator releases the trigger on
the spray gun, the flow of water through the flow switch
stops, turning off the current to the fuel solenoid. The
solenoid then closes, shutting off the supply of fuel to
the combustion chamber. Controlling the flow of fuel in
this way allows for an instantaneous burn or no burn
situation, thereby eliminating high and low water tem-
peratures, and combustion smoke normally associated
with machines incorporating a spray gun.
CAUTION: Periodic inspection is recommended to in-
sure that the fuel solenoid valve functions properly. This
can be done by operating the machine and checking
to see that when the trigger on the spray gun is in the
off position, the burner is not firing.
Electrode Setting:
(See illustration below.)
Burner Nozzle:
Keep the tip free of surface deposits by wiping it with a
clean, solvent-saturated cloth, being careful not to plug
or enlarge the nozzle. For maximum efficiency, replace
the nozzle each season.
Burner Air Adjustment:
Machines are preset and performance tested at the
factory - elevation 100 feet. A one-time initial correction
for your location will pay off in economy, performance
and extended service life. If a smoking 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.
To adjust: Start machine and turn burner ON. Loosen
the locking screws found in the air band openings (re-
fer to illustration below) and close air band until black
smoke appears from burner exhaust vent. Note air
band position. Next, slowly open the air band until white
smoke just starts to appear. Turn air band halfway back
to the black smoke position previously noted. Tighten
locking screws.
Periodically check wiring connections. If necessary to
adjust electrodes, use diagram.
Top View Side View
5/32"
1/4"
5/32"
Nozzle
Electrode
WAYNE FUEL AIR ADJUSTMENT
WAYNE
Air Band
Air Band
Locking Screw
MAINTENANCE
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