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Pre-Operation Check
Pump Oil (SAE 30W non-detergent oil)
Cold Water Supply (3.5 gpm • 5/8" • 20 psi)
Hose, wand, nozzles (nozzle size per serial plate)
Water filter (intact, nonrestrictive)
Engine fuel (unleaded 86 or higher)
Engine oil (SAE 10W40)
Burner fuel (No. 1 or No.2 home heating fuel or diesel)
Oil Burner
Burner Air Adjustment: The oil burner on this machine
is preset for operation at altitudes below 3000 feet. If
operated at higher altitudes, it may be necessary to
adjust the air shutter and air band setting. Adjust the air
shutter for a #1 or #2 smoke spot on the Bacharach
scale.
To adjust, start machine and turn burner ON (refer to
Operation for details). Loosen two locking screws found
in the air shutter openings (refer to Figure 4) and close
air shutter until black smoke appears from burner
exhaust vent. Note air shutter 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.
AIR SHUTTER LOCKING SCREW
AIR SHUTTER
"
$
&
AIR SHUTTER
LOCKING SCREW
Figure 4 - Burner Adjustment
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.
CAUTION: If white smoke appears from burner
exhaust vent during start-up or operation, discon-
tinue use and readjust air bands.
NOTE: If a flue is installed, have a professional ser-
viceman adjust your burner for a #1 or #2 smoke
spot on the Bacharach scale.
Page 8
AIR BAND
AIR BAND
LOCKING SCREW
OPERATION
Before Starting
1. Read all manuals provided with this pressure washer.
Become familiar with location and function of all
operating and safety controls.
WARNING: Check hoses, fittings, wand, trigger gun
and fuel connections daily for signs of wear, cracks
and looseness, and replace as required.
2. Connect water supply hose to the garden hose con-
nector located on pump. The water faucet and supply
hose must be capable of providing a minimum of 3.5
gallons per minute (GPM).
3. Fill oil burner fuel tank. Use kerosene, #1 grade home
heating oil, #1 or #2 diesel fuel. DO NOT USE GASO-
LINE, CRANKCASE OIL DRAININGS, OR WASTE
OIL.
WARNING: DO NOT fill engine fuel tank while engine
is running or hot. Let engine cool before refueling
or spontaneous fire may result. Fuel spillage or va-
pors could ignite if engine is hot.
4. Fill the engine fuel tank. Do not overfill, fill to the
bottom of filler neck only. Use lead free gasoline
minimum 86 octane. DO NOT use gasoline contain-
ing more than 15% MTBE, 5% methanol or 10%
ethanol. Refer to the provided gasoline engine
manual for additional details.
5. Check pump and engine oil levels.
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 the water supply and allow
water to run from the end of the wand until clear to
prevent the pressure nozzle from clogging.
IMPORTANT: If the pressure washer has not been
used for an extended period of time, remove the pres-
sure nozzle from the end of the wand and turn on
water supply. Allow water to run from the end of the
wand until clear.
7. Install the proper pressure nozzle for your cleaning
needs on the end of wand, refer to Figure 5.
MANUAL TRIGGER LOCK
Figure 5 - Nozzle Installation/Manual Trigger Lock
Hotsy 781SS, 871SS, 921SS • 97-6642 • Rev. 9/04
PRESSURE
NOZZLE
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