Hotsy Gas Belt Drive • 8.931-236.0 • REV. 7/13
15
PRESSURE WASHER
OPERATOR’S MANUAL
MAINTENANCE
WARNING: Unauthorized machine modification or
use of non-approved replacement parts may cause
personal injury and/or property damage and will void
the manufacturer warranty.
Pump
Use HOTSY Pump Oil (P/N 315068) or equivalent 30W
non-detergent oil for pump crankcase. Crankcase must be
filled to the full mark on the dipstick or to center of sight
glass window found on the rear of the pump. During the
break-in period, make sure the oil is changed after the
first 25 hours of operation. After that, replace oil every 3
months or 300 hours, whichever comes first.
DO NOT:
1. Pump acids.
2. Fail to winterize in freezing temperatures.
3. Allow pump to run dry.
4. Allow machine to run with trigger gun closed for more
than 3 minutes at any one time or damage to pump
may occur.
DO:
1. Use a water softener on the water system if known to
be high in mineral content.
2. Use only high quality detergents and follow manufac-
turer's mix recommendations.
3. Immediately after using detergent solutions the sys-
tem should be flushed thoroughly with clear water.
4. Clean strainer screen on detergent line periodically.
Unloader Valve
WARNING: The unloader valve on this pressure
washer has been factory set and sealed and is a field
nonadjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty.
Burner Fuel Filter
Drain water that has accumulated in fuel filter and clean
filter element as needed.
Heating Coil
Coil De scaling: In hard water areas, scale buildup within
the heating coil will occur. Scale deposits will decrease
the water temperature rise and may eventually clog the
heating coil. Contact your local service center when de
scaling is needed.
Coil De sooting: Poor grades of fuel oil or inadequate
combustion air will cause heavy soot buildup on the
outside surface of the heating coil. This will restrict the
airflow through the coil, further aggravating the soot
buildup. Contact your local service center when de sooting
is needed.
Engine
Refer to engine manual provided with this pressure
washer for recommended maintenance.
Oil Burner Blower Motor
The motor bearings are permanently lubricated and will
not require any additional lubrication.
Battery
Refer to battery manufacturer’s literature for
recommended maintenance
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