HOTSY 558 • 8.914-369.0 • Rev. 5/11
OPERATOR’S MANUAL PRESSURE WASHER
10
Before Starting
1. Read all manuals provided with this pressure washer.
Become familiar with location and function of all
operating and safety controls.
Grounding Instructions: This product must be
electrically grounded. If it would malfunction or break
down, grounding provides a path of least resistance for
electric current to reduce the risk of electric shock. This
machine must be wired into an appropriate outlet that
is properly installed and grounded in accordance with
all local codes and ordinances.
DANGER: Improper wiring connections of equip-
ment can result in a risk of electrocution. Check
with a qualified electrician or service personnel if
you are in doubt as to whether outlet is properly
grounded.
WARNING: Make sure all switches and controls are
in OFF position prior to plugging in electrical cord.
WARNING: DO NOT stand in water while plugging
or unplugging electrical cord.
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 prop-
erly 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.
CAUTION: This machine is equipped with a 35 foot
long power cord protected by a ground fault circuit
interrupter (GFCI). DO NOT use extension cords due
to possible severe electrical shock and/or damage
to the machine.
2. Connect electrical cord to an overload protected
115VAC/60Hz/1Ph grounded circuit, minimum 18
ampere rated. Test the GFCI using the reset and
test procedure located on the GFCI device. Do not
use machine if GFCI fails test. The GFCI must be
reset and tested with every use.
WARNING: Check hoses, fittings, wand, trigger gun
and fuel connections daily for signs of wear, cracks
and looseness, and replace as required.
3. Connect water supply hose to the garden hose con-
nector, see Figure 1 for location. The water faucet
and supply hose must be capable of providing a
minimum of 2.2 gallons per minute (GPM).
4. This machine was factory built for either LP vapor
fuel or Natural Gas. See instructions under Fuel
Supply.
5. Check pump oil level.
6. If detergents are to be used, only use detergents
intended for pressure washers. Follow instructions
on the detergent container.
IMPORTANT: Before installing pressure nozzle on
initial start-up, turn on water supply, start the pump
by pressing the pump ON switch, and hold the trig-
ger gun trigger open until water appears at the end
of the wand. Allow water to run from the end of the
wand until clear to prevent the nozzle from clogging.
IMPORTANT: If pressure washer has not been used
for an extended period of time, remove pressure
nozzle from the end of trigger gun and turn on water
supply, and start pump by pressing pump ON switch.
Hold trigger gun trigger open and allow water to run
from end of the wand until clear.
7. Install the adjustable pressure nozzle on end of wand,
refer to Figure 6.
NOTE: To prevent damage to the pressure nozzle,
only place the wrench on hex area when tightening.
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 6. The trigger lock should be used
whenever the trigger gun is not in use.
IMPORTANT: Pump may require priming the first time
the pressure washer is run. See step 8.
8. If you are running the machine for the first time, or
the machine has been sitting for a period of time, the
pump may require priming. To prime the pump, run
pressure washer with only the pump switch on.
IMPORTANT: On initial start-up or if maintenance has
been performed on the burner assembly, it will be
necessary to bleed the air from the gas line before
the pilot will light.
9. If you are running the machine for the first time or
have performed maintenance to the burner assembly,
there will be air in the gas line. To bleed out the air
from the gas line, run pressure washer with pump
and burner switches ON and thermostat on highest
setting. Squeeze the trigger of the trigger gun for 15
seconds. If the burner has not ignited, release the
trigger for 5 seconds then squeeze for 15 seconds.
If the burner has not ignited after 10 tries, see the
Troubleshooting Guide in this manual.
CAUTION: Have a qualified gas service tech-
nician install and service your equipment.
DANGER: Never expose a spark or flame where there
may be unburned gas present.
OPERATION
Figure 6 - Nozzle Installation/Manual Trigger Lock
Adjustable
Pressure
Nozzle
Manual Trigger Lock
