97-6554 • HOTSY 965SS-1075SS • REV. 7/05 9
PRESSUREWASHER OPERATOR’S MANUAL
INSTALLATION INSTRUCTIONS
Responsibility
Theownerand/oruser musthave an understanding of
themanufacturer’soperating instructionsandwarnings
before using this Hotsy pressure washer.Warning in-
formation shouldbeemphasizedandunderstood.Ifthe
operator is not fluent in English, the manufacturer’s in-
structionsand warnings shall be readtoand discussed
with the operator in the operator’s native language by
the purchaser/owner, making sure that the operator
comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’instructions.
This manual should be considered a permanent part
of the machine and should remain with it if machine
is resold.
When ordering parts, please specify model and se-
rial number.
Getting Started
IMPORTANT: Proper initial installation of equipment
will assure more satisfactory performance, longer
service life, and lower maintenance cost.
IMPORTANT:The use of a backflow preventer on the
water supply hose is recommended and may be
required by local code.
The pressure washer should be run on a level surface
and in a protected area where it is not readily influenced
by outside forces such as strong winds, freezing
temperatures, rain, etc. The pressure washer should be
located to assure easy access for filling of fluids,
adjustments and maintenance. Normal precautions
should be taken by the operator to prevent moisture from
reaching the pressure washer. It is recommended that a
partition be made between the wash area and the
pressure washer to prevent direct spray from the wand
fromcomingin contact withthepressurewasher.Moisture
reachingtheequipmentwill reduce the pressure washer’s
service life. All installations must comply with the local
codes covering such installations.
Venting
CAUTION: All venting must be in accordance with
applicable federal and state laws, and local ordi-
nances. Consult local heating contractors.
If the pressure washer is to be used in an enclosed area,
afluemustbe installed to ventburner and engine exhaust
to the outside atmosphere. Be sure the flue is the same
size as the burner exhaust vent on the pressure washer.
See Component Identification for location. Poor draft
will cause the pressure washer to soot and not operate
properly. When selecting the location for installation,
beware of poorly ventilated locations or areas where
exhaust fans may cause an insufficient supply of oxygen.
Proper combustion can only be obtained when there is a
sufficient supply of oxygen available for the amount of
fuel being burned.If it is necessary to install the machine
in a poorly ventilated area, outside fresh air may have to
bepipedto the burnerandafaninstalledtobring sufficient
air into the machine.Locate the pressure washer so that
the flue will be as straight as possible and protrude
throughtheroofataproperheightandlocationtoprovide
adequate draft.This oil fired pressure washer must have
a draft regulator installed in the flue (available from most
heating contractors). A draft regulator will permit proper
upward flow of exhaust flue gases.
Inaddition,the pressurewashershould neverbe operated
in an enclosed area where high ambient temperatures
exist. High ambient temperatures (above 100oF) can
causeengine oilfailureandwillgreatlyreduce theengine’s
performance.
Gasoline Engine
The gasoline engine is preset for operation at altitudes
below 3000 feet above sea level. If operated at higher
altitudes, it may be necessary to install a high altitude
main jet in the carburetor. Contact an authorized engine
sales and service center for details.
Pre-Operation Check
❑Pump Oil (SAE 30W non-detergent oil)
❑Cold Water Supply (6 gpm • 5/8" • 20 psi)
❑Hose, wand, nozzle (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
operatedat higher altitudes,itmay 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.
Figure 5 - Burner Adjustment
Air Band
Pressure
Adjustment Screw
Fuel
Filter
