Hotsy 965SS User manual

8.914-401.0
SERIAL NUMBER:
DATE PURCHASED:
FOR SALES AND SERVICE, PLEASE CONTACT:
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OPERATING INSTRUCTIONS AND PARTS MANUAL
Thank you for purchasing a Hotsy Pressure Washer.This manual covers the operation and mainte-
nance of your pressure washer. All information in this manual is based on the latest product informa-
tion available at the time of printing. Hotsy, Inc. reserves the right to make changes at any time without
incurring any obligation.
Read instructions carefully before attempting to assemble, install, operate or service this pressure
washer. Failure to comply with instructions could result in personal injury and/or property damage!
MODELS 965SS, 1065SS,
1065SSE, 1075SSE

HOTSY 965SS-1075SS • 8.914-401.0 • Rev.09/11
3
PRESSUREWASHER
OPERATOR’S MANUAL
965SS SPECIFICATIONS
● Pump Volume At Pump Head: 3.0 GPM/180 GPH
● Pump Pressure At Pump Head: 3000 PSI
● Burner Type: Fuel Oil Fired, 248,000 BTU/Hr.
● Burner Fuel Pressure: 140 PSI
● Machine Displacement: 270cc
● Exhaust Stack Size: 8"
● Machine Dimensions: Length=47",
Width=31", Height=47"
1065SS SPECIFICATIONS
● Pump Volume At Pump Head: 3.5 GPM/210 GPH
● Pump Pressure At Pump Head: 3000 PSI
● Burner Type: Fuel Oil Fired, 309,900 BTU/Hr.
● Burner Fuel Pressure: 160 PSI
● Machine Displacement: 337cc
● Exhaust Stack Size: 8"
● Machine Dimensions: Length=47",
Width=31", Height=49"
1065SSE SPECIFICATIONS
● Pump Volume At Pump Head: 3.5 GPM/210 GPH
● Pump Pressure At Pump Head: 3000 PSI
● Burner Type: Fuel Oil Fired, 309,900 BTU/Hr.
● Burner Fuel Pressure: 160 PSI
● Machine Displacement: 389cc Electric Start
● Exhaust Stack Size: 8"
● Machine Dimensions: Length=47",
Width=31", Height=49"
1075SSE SPECIFICATIONS
● Pump Volume At Pump Head: 3.8 GPM/228 GPH
● Pump Pressure At Pump Head: 3500 PSI
● Burner Type: Fuel Oil Fired, 309,900 BTU/Hr.
● Burner Fuel Pressure: 160 PSI
● Machine Displacement: 389cc Electric Start
● Exhaust Stack Size: 8"
● Machine Dimensions: Length=47",
Width=31", Height=49"

CONTENTS
4
HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 05/11
Model Number ______________________________
Serial Number ______________________________
Date of Purchase ____________________________
The model and serial numbers will be found on a decal attached
to the pressure washer.You should record both serial number and
date of purchase and keep in a safe place for future reference.
Important Safety Information 5-7
Component Identification 8
Assembly Instructions 9-10
Installation Instructions 11
Operation Instructions 12-13
General Cleaning Techniques & Storage 14
Maintenance 15
Troubleshooting 16-17
Warranty 35

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
5
PRESSUREWASHER
OPERATOR’S MANUAL
INTRODUCTION & IMPORTANT SAFETY INFORMATION
Thank you for purchasing this Pressure Washer.
We reserve the right to make changes at any time
without incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understanding of
themanufacturer’s operatinginstructions andwarnings
before usingthis pressurewasher.Warninginformation
should be emphasized and understood.If the operator
is not fluent in English, the manufacturer’s instructions
and warnings shall be read to and discussed with
the operator in the operator’s native language by the
purchaser/owner, making sure that the operator com-
prehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’instructions.
The operator must know how to stop the machine
quickly and understand the operation of all controls.
Never permit anyone to operate the engine without
proper 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
serial number. Use only identical replacement
parts.
This machine is to be used only by trained op-
erators.
IMPORTANT SAFETY
INFORMATION
READ OPERATOR’S
MANUAL THOROUGHLY
PRIORTO USE.
WARNING:To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1.
Read the owner's manual
thoroughly. Failure to follow
instructions could cause
malfunction of the machine
and result in death, serious
bodily injury and/or property
damage.
2.Know how to stop the machine and bleed pressure
quickly. Be thoroughly familiar with the controls.
3. Stay alert — watch what you are doing.
WARNING
KEEPWATER
SPRAY AWAY FROM
ELECTRICALWIRING.
WARNING: Keep wand, hose, and
water spray awayfromelectricwiring
or fatal electric shock may result.
4. All installations must comply
with local codes. Contact
your electrician, plumber,
utility company or the selling
distributor for specific details.
WARNING
EAR PROTECTION
MUST BEWORN
WARNING:Thismachineexceeds
85 db appropriate ear protection
must be worn.
WARNING
USE PROTECTIVE
EYEWEAR
AND CLOTHING
WHEN OPERATING
THIS EQUIPMENT.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne
and fly at high speeds.To avoid
personal injury, eye, hand and
foot safety devices must be
worn.
5. Eye, hand,and footprotection
must be worn when using this
equipment.
6. Keep operating area clear of all persons.
RISK OF EXPLOSION:
OPERATE ONLYWHERE
OPEN FLAME ORTORCH
IS PERMITTED
WARNING
WARNING: Flammable liquids
can create fumes which can ig-
nite, causing property damage
or severe injury.
WARNING: Risk of explosion —
Operate only where open flame
or torch is permitted.
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING
WARNING: Risk of fire — Do not
add fuel when the product is
operating or still hot.
WARNING: Do not use gasoline
crankcase draining or oil con-
taining gasoline, solvents or
alcohol. Doing so will result in
fire and/or explosion.
WARNING: Risk of fire — Do not
Spray flammable liquids.
WARNING:This product contains chemicals known
to the state of California to cause cancer and birth

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
OPERATOR’S MANUAL
PRESSUREWASHER
6
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STREAM AT PERSONS.
CAUTION: Hot discharge fluid.
Do nottouchordirect discharge
stream at persons.
WARNING: This machine pro-
duces hot water and must have
insulated components attached
to protect the operator.
13. To reduce the risk of injury, close supervision is
necessary when a machine is used near children.
Do not allow children to operate the pressure
washer.This machine must be attended during
operation.
TRIGGER GUN KICKS
BACK - HOLD WITH
BOTH HANDS
WARNING
WARNING: Grip cleaning wand
securely with both hands be-
fore starting. Failure to do this
could result in injury from a
whipping wand.
14. Never make adjustments on
machine while in operation.
15. Be certain all quick coupler fittings are secured
before using pressure washer.
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.
WARNING
WARNING: High pressure de-
veloped by these machines will
cause personal injury or equip-
ment damage. Keep clear of
nozzle. Use caution when oper-
ating. Do not direct discharge
stream at people, or severe in-
jury or death will result.
WARNING
PROTECT FROM
FREEZING
WARNING: Protect machine
from freezing.
16. To keep machine in best
operating conditions, it is
importantyouprotectmachine
fromfreezing.Failuretoprotect
machine from freezing
couldcausemalfunctionofthe
machine and result in death,
serious bodilyinjury, and/orpropertydamage.Fol-
low storage instructions specified in this manual.
17. Inletwatermustbe cleanfresh waterandno hotter
then 90°F.
IMPORTANT SAFETY INFORMATION
defects or other reproductive harm. Operation of
this equipment may create sparks that can start
fires around dry vegetation. A spark arrestor may
be required. The operator should contact: Local
fire agencies for laws or regulations relating to fire
prevention requirements
.
7. Allow engine to cool for 1-2 minutes before refu-
eling. If any fuel is spilled, make sure the area is
dry before testing the spark plug or starting the
engine. (Fire and/or explosion may occur if this is
not done.)
Gasolineengines onmobile orportableequipment
shall be refueled:
a. outdoors;
b. with the engine on the equipment stopped;
c. with no source of ignition within 10 feet of
the dispensing point; and
d. withan allowancemadeforexpansionof the
fuelshould the equipmentbe exposedtoa
higher ambient temperature.
Inanoverfillingsituation,additionalprecautions are
necessary to ensure that the situation is handled
in a safe manner.
WARNING: Risk of injury. Disconnect battery
ground terminal before servicing.
8. Wheninuse ,donotplace machinenearflammable
objects as the engine is hot.
9. Oil burning appliances shall be installed only in
locations where combustible dusts and flammable
gases or vapors are not present. Do not store or
use gasoline near this machine.
10. Use No. 1 or No. 2 heating oil (ASTM D306) only.
NEVER usegasoline in your fuel oiltank.Gasoline
is more combustible than fuel oil and could result
in a serious explosion. NEVER use crankcase or
wasteoilin yourburner.Fuel unitmalfunction could
result from contamination.
11. Do not confuse gasoline and fuel oil tanks. Keep
proper fuel in proper tank.
WARNING
RISK OF INJURY.
HOT SURFACES
CAN CAUSE BURNS
WARNING: Risk of injury. Hot
surfaces can cause burns. Use
only designated gripping areas
of spray gun and wand. Do not
place hands or feet on non-in-
sulated areas of the pressure
washer.
12. Transport/Repairwith fuel tankEMPTY orwith fuel
shut-off valve OFF.

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
7
PRESSUREWASHER
OPERATOR’S MANUAL
IMPORTANT SAFETY INFORMATION
WARNING
RISK OF
ASPHYXIATION: USE
THIS PRODUCT ONLY
IN AWELL
VENTILATED AREA.
WARNING:Riskofasphyxiation.
Use this product only in a well
ventilated area.
18. Avoid installing machines in
small areas or near exhaust
fans. Adequate oxygen is
needed for combustion or
dangerouscarbon monoxide
will result.
19. Manufacturer will not be liable for any changes
made to our standard machines or any compo-
nents not purchased from us.
20. The bestinsurance againstan accidentis precau-
tion and knowledge of the machine.
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING:Be extremely careful
when using a ladder, scaffold-
ing or any other relatively un-
stable location. The cleaning
area should have adequate
slopes and drainage to reduce
the possibility of a fall due to
slippery surfaces
.
21. Do not allow acids, caustic or abrasive fluids to
pass through the pump.
22. Never run pump dry or leave spray gun closed
longer than 1-2 minutes.
23. Machines with shut-off spray gun should not be
operated with the spray gun in the off position for
extensive periods of time as this may cause dam-
age to the pump.
24. Protect discharge hose from vehicle traffic and
sharp objects.Inspect condition of high pressure
hose before using or bodily injury may result.
25. Before disconnecting discharge hose from water
outlet, turn burner off and open spray gun to al-
low water to cool below 100° before stopping the
machine.Then openthe spray gunto relievepres-
sure.Failure toproperly cooldownor maintainthe
heating coil may result in a steam explosion.
26. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
27. Do not operate this machine when fatigued or
under the influence of alcohol, prescription medi-
cations, or drugs.
28. In oil burning models, use only kerosene, No. 1
home heating fuel, or diesel.If diesel is used, add
a soot remover to every tankful.
Follow the maintenance instructions
specified in the manual.

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
OPERATOR’S MANUAL
PRESSUREWASHER
8
COMPONENT IDENTIFICATION
Pump — Delivers a specific gpm to the high pressure
nozzle which develops pressure.
Spray Gun — Controls the application of water and
detergent onto cleaning surface with trigger device.
Includes safety latch.
Detergent Injector — Allows you to siphon and mix
detergents.
Wand — Must be connected to the spray gun.
High Pressure Hose — Connect one end to water
pump high pressure discharge nipple and the other
end to spray gun.
Unloader Valve — Safety device which, when the
spray gun closes, redirects flow of water.
Note:If trigger on spray gun is released for more
than 2 minutes, water may leak from the pump
protector. Warm water will discharge from pump
protector onto floor.This system prevents internal
pump damage.
Pump
Unloader
Valve
Detergent
Injector
Spray
Gun
High
Pressure Hose
Wand
Burner
Exhaust
Coil Outlet
Hose
Hanger
Engine
High
Pressure
Nozzle

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
9
PRESSUREWASHER
OPERATOR’S MANUAL
ASSEMBLY INSTRUCTIONS
Unpacking
Unpack carefully. Wear safety glasses or goggles while
unpacking, assembling, or operating pressure washer.
If there are missing components or hidden damage,
immediately contact carrier concerning discrepancies.
1. Cut strapping band from pressure washer and pal-
let.
2. Remove pressure washer from pallet.
Parts Included
•Pressure Washer
•Pressure Hose
•Wand
•Operating Instructions and Parts Manual
•Gasoline Engine Manual
•Parts Bag Containing:
■Pressure Nozzles (3 Ea.)
■Trigger Gun
■Battery Terminals (2 Ea.)
Tools Required
•8" Adjustable Wrench
•Teflon Tape
•Flat Blade Screwdriver
Pressure Hose,Trigger Gun and Wand
1. When assembling, use teflon tape on all threaded
plumbing connections to prevent leakage.
2. Install the pressure hose on the pressure washer as
shown in Figure 1.
3. Assemble wand components as shown in Figure 2.
NOTE: The pressure nozzle is not to be installed at
this time.
4. Make sure all plumbing connections are tight.
Battery
WARNING:Wear eye, hand and skin protection when
handling or connecting battery.
WARNING: Batteries generate explosive gases during
normal battery operation.
WARNING: DO NOT expose the battery to flame or
sparks as these gases may ignite.
WARNING:Batteryfluid is highlyacidic.If batteryfluid
contacts skin orclothing,wash immediately with soap
andwater.If battery fluid enters eye,immediately flood
eye with running cold water for at least 15 minutes
and get immediate medical attention.
1. Electric Start Machines Only: Place battery in bat-
terybox(battery not included).Usea standard 12volt
automotive battery.Select a battery similar to the one
in Figure 3 for proper fit and installation.
Figure 2 -Wand Assembly
Trigger Gun
Quick
Disconnect
Quick Disconnect
Wand
Quick
Disconnect Plug
Pressure
Hose
Figure 3 - Battery Dimensions
6-3/4"
Max
10-1/2"
Max
8-3/4"
Max
ReliefValve
Figure 1 - Pressure Hose Installation
Pressure
Hose

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
OPERATOR’S MANUAL
PRESSUREWASHER
10
2. Install the provided battery terminals as shown in
Figure 4.
3. To reduce the possibility of sparking attach the wires
to the battery in the following order. Refer to Figure
4.First attach the red wire from the voltage regulator
and the red wire from the control box to the positive
“+" terminal of battery. Next, attach the black wire
fromthe voltageregulatorand the blackwirefromthe
control box to the negative“-" terminal of the battery.
To disconnect the battery remove the wires in the
opposite order as installed. Install battery box cover
and fasten in place.
Figure 4 - Battery Installations/Connections
Box Strap
Battery
Box Lid
RedWire From
Control Box
BlackWire
FromVoltage
Regulator
RedWire From
Voltage Regulator
12Volt
Battery
Battery
Terminal
Battery Box
BlackWire From
Control Box
ASSEMBLY & INSTALLATION INSTRUCTIONS
INSTALLATION
Responsibility
Theowner and/oruser musthave anunderstanding of
themanufacturer’s operatinginstructions andwarnings
before usingthisHotsy pressurewasher.Warning infor-
mation should be emphasized and understood. If the
operator is not fluent in English, the manufacturer’s in-
structions andwarnings shallbe readto anddiscussed
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
fromcomingincontactwiththe pressure washer.Moisture
reachingtheequipment will reduce thepressurewasher’s
service life. All installations must comply with the local
codes covering such installations.
Venting
CAUTION:All venting must be in accordance with ap-
plicable federal and state laws, and local ordinances.
Consult local heating contractors
.
If the pressure washer is to be used in an enclosed area,
afluemustbe installed toventburner and engineexhaust
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 insuffi cient supply of oxygen.
Proper combustion can only be obtained when there is a
sufficientsupplyof oxygenavailableforthe amountoffuel
being burned.If it is necessary to install the machine in a
poorly ventilated area, outside fresh air may have to be
piped to the burner and a fan installed to bring sufficient
air into the machine. Locate the pressure washer so
that the flue will be as straight as possible and protrude
throughthe roof ataproper height andlocationto provide
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,thepressurewashershould never be operated
in an enclosed area where high ambient temperatures
exist. High ambient temperatures (above 100oF) can
cause engine oil failure and will greatly reduce the
engine’s performance.

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
11
PRESSUREWASHER
OPERATOR’S MANUAL
INSTALLATION INSTRUCTIONS
Figure 5 - Burner Adjustment
Air Band
Pressure
Adjustment Screw
Fuel
Filter
Gasoline Engine
The gasoline engine is preset for operation at altitudes
below 1000 feet above sea level. If operated at higher
altitudes, it may be necessary to install a high altitude
main jet in the carburetor. Contact a local 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 10W30)
❑ 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 1000 feet. If
operatedat higheraltitudes,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 5) 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.
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
exhaustvent during start-up or operation,discontinue
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.

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
OPERATOR’S MANUAL
PRESSUREWASHER
12
OPERATION INSTRUCTIONS
Before Starting
1. Readall manuals provided with thispressure 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. Filloil burnerfueltank.Use kerosene, #1 grade home
heating oil, #1 or #2 diesel fuel.
DO NOT USE GAS-
OLINE, 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 vapors
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
minimum86 octane.DO NOT use gasoline containing
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
intendedforpressure washers.Followinstructionson
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
pressure 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 6.
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 manual 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
and void warranty.
IMPORTANT: DO NOT allow the machine to run with
trigger of the trigger gun released for more than
2 minutes at any one time or damage to pump may
occur.
1. Turn ON water supply.
2. Hold wand firmly, release trigger of trigger gun.
3. Place engine ON/OFF switch in the ON position.
4. Open fuel shutoff valve (if so equipped).Move choke
lever to FULL CHOKE position, (choke may not be
neededon warmengine).Move throttleleverto HALF
THROTTLE position.
5. Pullthe rope starterslowlyuntilresistance is felt, then
pull briskly.Do not allow the rope starter to snap back
againsttheengine.Returnit gently to prevent damage
to the starter.
6. When the engine starts, move choke lever until
engine runs smoothly. When engine warms, move
choke lever to NO CHOKE position. Move throttle
lever to FULL THROTTLE position.
IMPORTANT: To allow for proper battery charging,
the throttle control must be kept in the full throttle
position during operation.
NOTE:If engine fails to start,refer toTroubleshooting
Guide in this manual.
7. Squeeze trigger of trigger gun and allow air to purge
from system.
8.
If hot water is desired, adjust the thermostat to the
proper temperature and turn burner switch ON. The
burnerwill light immediatelywitha small puffof smoke.
You may need to initially adjust your burner for peak
performance. See Oil Burner section under Instal-
lation. When the trigger of the trigger gun is released
orwhenthe thermostattemperaturesettingis reached,
the burner will automatically turn off.
To Clean
The detergent injector valve operates by reducing the
volumeofwater,thusavacuumis achieved and detergent
is drawn into the system. DO NOT reduce the water
inlet flow so the pump cavities due to water starvation.
Operating a pump with insufficient water will damage
the pump seals.
1. Insert detergent inlet line into container of mixed
detergent.
Figure 6 - Nozzle Installation/ManualTrigger Lock
Manual
Trigger Lock
Pressure
Nozzle

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
13
PRESSUREWASHER
OPERATOR’S MANUAL
2. Completely open detergent control knob located
on the side of the detergent injector valve. Refer to
Figure 7.
3. Start the detergent suction by rotating the water
adjustment knob of the detergent injector valve.
Refer to Figure 7.Turning the knob counterclockwise
will pull detergent into the system. The flow may be
observed throughtheclear detergent line.Secure the
knob position with the knurled nut.
4. The side detergent control knob can now be adjusted
to meter the desired amount of detergent.
5. Wash from the bottom to the top, using side to side
motions.This washes away heavy dirt and allows the
detergent to soak as you work toward the top.
6. Do not wash at a 90oangle to the work (straight at
it). This will allow water to splash back at you and
reduces your cleaning power. Wash at a 30oto 60o
angle to the work.This will allow the water to splash
away from you and the water will wash the dirt away
faster and easier.
7. Use the width of the spray pattern to wash in a
wide path. Overlap spray paths for complete cover-
age washing from side to side, using slow, steady
motions.
8. The nozzle should be 12" to 24" from work, closer
for tough areas. Be careful on painted or delicate
surfaces, the pressure may damage surface if nozzle
is too close.
9. Small parts should be washed in a basket so the
pressuredoesnotpushthemaway.Larger,lightweight
parts should be clamped down so the pressure does
not push them away.
10. Turn the side detergent control knob clockwise (CW)
for detergent decrease. Wait for detergent to clear.
Always rinse with cold water after using detergent.
Rinse from the top to the bottom to prevent detergent
from dripping onto a rinsed area.For the best results,
contact your Hotsy dealer to help you select the best
detergent for your application.
To Stop
1. Ifdetergents were used, draw clearwaterthrough the
detergent inlet line to purge detergent. Failure to do
so may clog detergent injector valve.
2. If burner was used, turn OFF burner switch and
allow pump to run cold water through coil for several
minutes.
3. Move throttle lever to idle position.
4. Turn engine ON/OFF switch to the OFF position.
5. Close fuel shutoff valve (if so equipped).
6. Turn water supply OFF.
7. Squeeze trigger of trigger gun to relieve system
pressure.
OPERATION INSTRUCTIONS
Figure 7 - Detergent InjectorValve
Water
Adjustment
Knob
Detergent On
(Counterclockwise)
Detergent
Control Knob
Detergent
Injector

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
OPERATOR’S MANUAL
PRESSUREWASHER
14
Pre-rinse cleaning surface with fresh water. Place deter-
gentsuction tube directlyinto cleaning solutionandapply
tosurfaceat lowpressure (forbest results,limit yourwork
area to sections approximately 6 feet square and always
apply detergent from bottom to top). Allow detergent to
remain on surface 1-3 minutes. Do not allow detergent
to dry on surface.If surface appears to be drying, simply
wet down surface with fresh water. If needed, use brush
to remove stubborn dirt.Rinse at high pressure from top
to bottom in an even sweeping motion keeping the spray
nozzle approximately 1 foot from cleaning surface. Use
overlapping strokes as you clean and rinse any surface.
For best surface cleaning action spray at a slight angle.
Recommendations:
• Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern and
distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may remove
the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash a
smallarea,thencheckthesurfacefor damage. If no
damage is found, continue to pressure washing.
CAUTION - Never use:
• Bleach, chlorine products and other corrosive
chemicals
• Liquids containing solvents (i.e., paint thinner,
gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the machine and will damage
the surface being cleaned.
RINSING
It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun.Select and install de-
sired high pressure nozzle. NOTE: You can also stop
detergent from flowing by removing detergent siphon
tube from bottle. STORAGE
DANGER:DO NOT store flammable liquids (gasoline,
diesel fuel,solvents,etc.) near pressure washer,or in
non-ventilated areas.
Protect from freezing by storing in a heated area, or by
flushing the system with antifreeze (use an automotive
engine antifreeze or windshield washer solvent to
antifreeze). To flush the system with antifreeze, the
following steps are to be followed:
1. Connect water supply hose to the garden hose con-
nector located on the pump.Turn on water supply.
2. Place the detergent inlet line into a container of
GENERAL CLEANINGTECHNIQUES & STORAGE
antifreeze.
3. Hold wand firmly, release trigger of trigger gun.
4. Start engine. Place throttle lever in Full Throttle
position.
5. Squeeze trigger of trigger gun and allow water to
flow from the end of the wand. Watch for antifreeze
to be drawn through the detergent inlet line. Allow
the antifreeze to be drawn into the system for 5 to
10 seconds.
6. Release the trigger of the trigger gun and stop
engine.
7. Turn off water supply and disconnect water supply
hose from the pump.
8. Attach a short length of hose (approximately 3 feet
long) to the garden hose connector located on the
pump. Install a funnel in the other end of the hose as
shown in Figure 8.
9. Hold wand firmly, release the trigger of the trigger
gun.
10. Start engine.Place throttle lever in the idle position.
11. Squeeze trigger on trigger gun.
12. Slowly pour antifreeze into the funnel. Continue to
add antifreeze until antifreeze flows from the end of
the wand.
13. Squeeze and release the trigger of the trigger gun
several times to antifreeze the unloader system.
14. Release the trigger of the trigger gun. Stop engine.
15. Squeezethetrigger of the triggerguntorelievesystem
pressure.
For added protection, after anti freezing, disconnect the
pressurehosefromthemachineand removethecoildrain
plug (refer to Component Identification for location.)
After coil has drained, replace pressure hose and coil
drain plug. If the pressure washer is not to be used for
an extended length of time, it is recommended that the
system be flushed with antifreeze for rust protection.
Refer totheGasoline Engine Manual forengine storage
information.
Funnel
Garden Hose Connector
Figure 8 -Winterizing

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
15
PRESSUREWASHER
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
Lubrication:Tolubricate pump,use 30W (non-detergent)
oilforpump crankcase.Crankcase mustbe filled tocenter
ofreddoton oil gauge found on the sideof thepump, refer
to Figure 9. During the break-in-period, make sure the
oil is changed after the first 40 hours of operation. After
that,replaceoil every 3 monthsor500 hours of operation,
whichever comes first.
Proper Pump Care:
• DO NOT pump acids.
• DO NOT allow pump to run dry.
• Winterize if storing in freezing temperatures, refer
to Storage for details.
• Use a water softener on the water system if known
to be high in mineral content.
• Use only high quality detergents and follow manu-
facturer's mix recommendations.
• Flush the system with clear water immediately
after using detergent solutions.
•Clean filter screen on detergent inlet line
periodically.
• Flush the pressure washer system with antifreeze
if storing for an extended period of time, refer to
Storage for details.
Gasoline Engine
Refer to the provided Gasoline Engine Manual for
recommended maintenance.
Oil Burner
Blower Motor:Inspect the motor brushes for wear every
250 hours of operation and replace when 1/8" to 1/4"
brush material remains. DO NOT allow the brushes to
wear out completely or motor damage will occur.Refer to
Burner Assembly.The motor bearings are permanently
lubricated and will not require any additional lubrication.
UnloaderValve/ Relief valve
WARNING:The unloader valve and relief valve on this
pressure washer has been factory set and sealed and
isa field nonadjustable part.Tampering withthe facto-
ry setting may cause personal injury and/or property
damage,and will void the manufacturer warranty. For
replacement refer to Pump Assembly.
Burner Fuel Filter
Drain any water which has accumulated in fuel filter
and clean or replace filter element as needed. Refer to
Burner Assembly.
Heating Coil
Coil Descaling:In hardwaterareas,scale buildupwithin
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
descaling is needed.
Coil Desooting: Poor grades of fuel oil or inadequate
combustion air will cause heavy soot buildup on the
outside surface of the heating coil. These deposits will
insulate the coil.This will restrict the air flow through the
coil, further aggravating the soot buildup. Contact your
local service center when desooting is needed.
Hour Meter
Thishour meter will monitorthetotal hours ofoperationof
the pressure washer to signal when routine maintenance
is required.
Battery
Refer to battery manufacturer’s literature for
recommended maintenance.
ReliefValve
WARNING: The relief valve on this pressure washer
has been factory set and sealed and is a field non-
adjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty. For replace-
ment parts refer to Coil Outlet Assembly.
If pressure from pump or thermal expansion should
exceed safe limits, the relief valve will open, allowing
high pressure to be discharged through hose to ground.
Caution: Inspect relief valve annually for any
obstruction.
Oil Fill/Dipstick
Oil Drain
Plug
Oil Sight
Glass
Figure 9 - Pump Lubrication

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
PRESSUREWASHER Troubleshooting Guide
16
TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
GAS ENGINEWILL
NOT RUN. Out of gas Replenish supply. Use only recommended
fuels.Refer to Before Starting under
Operation.
Fuel valve closed (if so equipped) Open valve.
Loose spark plug wire Reconnect.
Choke or throttle set incorrectly Refer to To Start under Operation.
Engine ON/OFF switch in OFF
position Place engine ON/OFF switch in ON posi- tion.
Low engine oil level Replenish supply. Engine will not start or
run if oil is low (on engines equipped with
low oil protection).
Refer to provided gasoline engine manual for additional troubleshooting.
PRESSURE
WASHER RUNS BUT
WON’T SPRAY.
Trigger of trigger gun released Squeeze trigger.
Water supply not turned on Open water supply valve.
Clogged pressure nozzle Clean pressure nozzle opening.
If water spray doesn’t show with in
10-15 seconds Discontinue running the machine and troubleshoot as damage to the pump will
occur if allowed to run.
LOW SPRAY
PRESSURE AT
PRESSURE
NOZZLE.
Inadequate water supply Fully open faucet.Check for kinked or dam-
aged hose. Use 3/4 inch minimum hose.
Check for debris clogging inlet screen.
Partially clogged or damaged pres-
sure nozzle Clean or replace.
Air being drawn through detergent
inlet line Refill detergent container.Ensure that pick- up screen is fully immersed.
Detergent injector valve not set
correctly Refer to To Clean for settings.
UNEVEN SPRAY
PATTERN. Partially clogged or damaged pres-
sure nozzle Clean or replace.
PRESSURE
WASHER WILL NOT
PRODUCE HOT
WATER.
Burner switch in OFF position Place switch in ON position.
Inadequate fuel supply Refill fuel tank. Use only recommended
fuels. Refer to Before Starting under Op-
eration.
Inadequate water supply Fully open faucet.Check for kinked or dam-
aged hose. Use 3/4 inch minimum hose.
Check for debris clogging inlet screen.
Trigger of trigger gun released Squeezetrigger.Water mustbe spraying for
burner to light.
Thermostat set too low Adjust thermostat to desired temperature.
Blown fuse Replace.Fuse is located in control box.
Engine is running too slow Move throttle lever to full throttle position.

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
17
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING
When ordering from your dealer, please provide the following:
Model Number: 965SS, 1060SS, 1065SS, 1065SSE, 1075SSE
Machine Serial Number: ________________________________
Component Part Number: ______________________________
Description: __________________________________________
IMPORTANT
If the pressure washer demonstrates other symptoms or the corrective actions
listed do not correct the problem, contact the local authorized Hotsy Service
Center.The Hotsy Service Center can be identified by visiting www.hotsy.com.
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
POOR OR NO
DETERGENT FLOW. Inadequate detergent supply. Refill detergent container. Ensure that
pick-up screen is fully immersed. Open
detergent valve.
Detergent screen or hose clogged. Clean.Always start with a clean detergent
container.
Detergent injector valve not set
correctly. Refer toTo Clean for settings.
Clogged detergent injector check
valve. Clean check valve at detergent injector inlet
POOR CLEANING. Improper detergent concentration or
mixing. Mix detergent per manufacturer’s instruc- tions.Ensure thatpowdereddetergentsare
fully dissolved.
Wrong detergent for the application. Select appropriate detergent.
Rinsing with hot water. A final rinse with cold water will reduce
water spotting.

HOTSY 965SS-1075SS • 8.914-401.0 • Rev. 09/11
35
PRESSUREWASHER WARRANTY
HOTSY LIMITED NEW PRODUCTWARRANTY
PRESSURE WASHERS
WHAT THIS WARRANTY COVERS
All Hotsy pressure washers are warranted by Hotsy to the original purchaser to be free from defects in materials and work-
manship under normal use, for the periods specified below.This Limited Warranty is subject to the exclusions shown below,
is calculated from the date of the original purchase, and applies to the original components only.Any parts replaced under
this warranty will assume the remainder of the part’s warranty period.
SEVENYEAR PARTS AND ONE YEAR LABOR WARRANTY:
ComponentsmanufacturedbyHotsy,suchasframes,handles,top and bottom wraps,floattanks,fuel tanks,belt guards,and
internal components on the oil-end of HOTSY manufactured pumps. General, AR, Liberty, Comet and swash and wobble
plate pumps have a one year warranty. Heating coils have a five year warranty from date of original machine purchase.
ONE YEAR PARTS AND ONE YEAR LABOR WARRANTY:
All other components, excluding normal wear items as described below, will be warranted for one year on parts and
labor. Parts and labor warranty on these parts will be for one year regardless of the duration of the original component
manufacturer’s part warranty. WARRANTY PROVIDED BY OTHER MANUFACTURERS:
Motors, generators, and engines, which are warranted by their respective manufacturers, are serviced through these manu-
facturers’ local authorized service centers. Hotsy is not authorized and has no responsibility to provide warranty service
for such components. WHAT THIS WARRANTY DOES NOT COVER
This warranty does not cover the following items:
1. Normal wear items, such as nozzles, spray guns, discharge hoses, wands, quick couplers, seals, filters, gaskets,
O-rings, packings, pistons, pump valve assemblies, strainers, belts, brushes, relief valves, fuses, pump protec -
tors.
2. Damageormalfunctionsresultingfromaccidents,abuse,modifications,alterations,incorrect installation, improper
servicing, failure to follow manufacturer’s maintenance instructions, or use of the equipment beyond its stated us-
age specifications as contained in the operator’s manual.
3. Damage due to freezing, chemical deterioration, scale build up, rust, corrosion, or thermal expansion.
4. Damage to components from fluctuations in electrical or water supply.
5. Normal maintenance service, including adjustments, fuel system cleaning, and clearing of obstructions.
6. Transportation to service center, field labor charges, or freight damage.
WHAT YOU MUST DO TO OBTAIN WARRANTY SERVICE
In order to obtain warranty service on items warranted by Hotsy, you must return the product to your Authorized Hotsy
Distributor, freight prepaid, with proof of purchase, within the applicable warranty period. If the product is permanently
installed, you must notify your Authorized Hotsy Distributor of the defect.Your Authorized Hotsy Distributor will file a claim
with Hotsy, who must subsequently verify the defect. In most cases, the part must be returned to Hotsy freight prepaid
with the claim. For warranty service on components warranted by other manufacturer’s, your Authorized Hotsy Distributor
can help you obtain warranty service through these manufacturers’ local authorized service centers.
LIMITATION OF LIABILITY
Hotsy’s liability for special, incidental, or consequential damages is expressly disclaimed. In no event shall Hotsy’s liability
exceed the purchase price of the product in question.Hotsy makes every effort to ensure that all illustrations and specifica-
tions are correct, however, these do not imply a warranty that the product is merchantable or fit for a particular purpose, or
that the product will actually conform to the illustrations and specifications. Our obligation under this warranty is expressly
limited at our option to the replacement or repair at a service facility or factory designated by us, of such part or parts as
inspection shall disclose to have neen defective. THE WARRANTY CONTAINED HEREIN IS IN LIEU OF ALL OTHER
WARRANTIES,EXPRESS OR IMPLIED,INCLUDING ANY IMPLIEDWARRANTY OF MERCANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE ARE EXPRESSLY LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY.
Hotsy does not authorize any other party, including authorized Hotsy Distributors, to make any representation or promise
on behalf of Hotsy, or to modify the terms, conditions, or limitations in any way.It is the buyer’s responsibility to ensure that
the installation and use of Hotsy products conforms to local codes.While Hotsy attempts to assure that its products meet
national codes, it cannot be responsible for how the customer chooses to use or install the product.Some states do not al-
low limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages,
so the above limitation or exclusion may not apply to you.This warranty gives you specific legal rights and you may also
have other rights which vary from state to state. HOTSY
www.hotsy.com

If you are looking for replacement parts for your Hotsy, please contact your local dealer. You
can nd a dealer by calling Hotsy at 800-525-1976 or by visiting www.hotsy.com.

Form #8.914-401.0 • 965SS-1075SS • Revised 09/11 • Printed in U.S.A.
If you need service on your pressure washer, contact your local Hotsy
dealer or visit www.Hotsy.com. Smart phone users scan the code below to
link directly to the Service Request page.