8.914-355.0 • Rev. 07/17
11
PRESSURE WASHER
OPERATOR’S MANUAL
OPERATION INSTRUCTIONS
Before Starting
WARNING: Check hoses, guns, fittings, and fuel
connections daily for signs of wear, cracks and
looseness, and replace as required.
1. Read all manuals provided with this pressure washer.
Become familiar with location and function of all
operating and safety controls.
2. Connect water supply hose to the standard garden
hose connector. The water faucet and supply hose
must be capable of providing 3.0 gpm for 790SS, and
4 gpm for 795SS, 795SS-208.
3. Fill fuel tank. Use kerosene, #1 grade home heating
oil, #1 or #2 diesel fuel.
DO NOT USE GASOLINE,
CRANKCASE OIL DRAININGS OR WASTE OIL
.
4. Check pump oil level.
5. If detergents are to be used, only use detergents
intended for pressure washers. Follow instructions on
the detergent container.
Electrical Connections
WARNING: Make sure all switches and controls are
in the OFF position prior to plugging in.
CAUTION: This pressure washer is equipped with a
UL approved ground fault circuit interrupter (GFCI)
power cord. Use UL grounded type receptacles
of proper voltage and amperage ratings. Where a
properly grounded receptacle is not available, it is
the personal responsibility of the owner to have one
installed. Always disconnect power before servicing
your pressure washer.
Connect electrical cord and test the GFCI using the reset
and test procedures provided on the GFCI device. The
GFCI must be reset and tested with every use. Do not
use machine if the GFCI device fails test.
Nozzle Installation
IMPORTANT: Before installing nozzle on initial start-
up, turn on the water supply, and allow water to run
from the end of the wand until clear to prevent the
nozzle from clogging.
IMPORTANT: If the pressure washer has not been
used for an extended period of time, remove the
nozzle from the end of the wand and turn on water
supply. Allow water to run from the end of the wand
until clear.
1. Install the proper pressure nozzle for your cleaning
needs on the end of the wand. Refer to
Figure 5.
IMPORTANT: The trigger gun provided with this pres-
sure washer is equipped with a manual trigger lock to
prevent accidental operation of the trigger gun; refer
to Figure 5. The trigger lock should be used whenever
the trigger gun is not in use.
To Start
IMPORTANT: The water must be turned on before
starting. Running the pump dry will cause damage
to pump seals and void warranty.
IMPORTANT: DO NOT allow the machine to run in
bypass for more than 10 minutes at any one time or
damage to pump may occur.
1. Turn water ON.
2. Hold gun firmly, squeeze trigger of trigger gun and
turn pump switch ON. Allow air to purge from system.
3. If HOT water is desired, turn burner switch ON.
Adjust thermostat to desired temperature. The burner
will fire immediately with a small puff of smoke. If
smoke continues refer to the Troubleshooting Guide
in this manual. When the trigger gun is closed the
burner will turn off.
To Stop
1. If detergents were used, draw clear water through the
detergent line to purge detergent.
2. If burner was used, turn off burner switch and allow
pump to run cold water through coil.
3. Turn pump switch OFF.
4. Turn OFF water supply.
5. Squeeze trigger gun open to relieve system pressure.
Figure 5 - Nozzle Installation/Trigger Lock
Pressure Nozzle
Manual Trigger
Lock
