Hotsy 871SS Service manual

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!
MODEL 871SS
SERIAL NUMBER:
DATE PURCHASED:
FOR SALES AND SERVICE, PLEASE CONTACT:
8.914-410.0
L
I
S
T
E
D
®

871SS SPECIFICATIONS
● Pump Volume At Pump Head: 2.71 GPM/162.6 GPH
● Pump Pressure At Pump Head: 2400 PSI
● Burner Type: Fuel Oil Fired, 248,500 BTU/Hr.
● Burner Fuel Pressure: 140 PSI
● Machine Model: Robin Subaru 211cc, Manual Start
● Machine Weight: 291 Lbs.
● Shipping Weight: 330 Lbs.
● Exhaust Stack Size: 8"
● Machine Dimensions: Length=48", Width=27",
Height=42.5"

CONTENTS
4
HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
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.
Introduction & Important Safety Information 5-7
Component Identification 8
Assembly Instructions 9
Installation Instructions 10-11
Operating Instructions 12-13
Storage 13-14
Maintenance 15
Troubleshooting 16-17
Warranty 29

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
5
PRESSURE WASHER
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
the manufacturer’s operating instructions and warnings
before using this pressure washer.Warning information
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
PRIOR TO USE.
WARNING:To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1. Read the owner's manual thor-
oughly. Failure to follow instruc-
tions 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
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING: Keep wand, hose, and
water spray away from electric wiring
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 BE WORN
WARNING:This machine exceeds
85 db appropriate ear protection
must be worn.
WARNING
USE PROTECTIVE
EYE WEAR
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 foot protection
must be worn when using this
equipment.
6. Keep operating area clear of all persons.
RISK OF EXPLOSION:
OPERATE ONLY WHERE
OPEN FLAME OR TORCH
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
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.)

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
OPERATOR’S MANUAL
PRESSURE WASHER
6
TRIGGER GUN KICKS
BACK - HOLD WITH
BOTH HANDS
WARNING
WARNING: Grip cleaning wand
securely with both hands before
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 devel-
oped 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
important you protect machine
from freezing.Failure to protect
machine from freezing
could cause malfunction of the
machine and result in death,
serious bodily injury, and/or property damage. Fol-
low storage instructions specified in this manual.
17. Inlet water must be clean fresh water and no hotter
then 90°F.
WARNING
RISK OF
ASPHYXIATION: USE
THIS PRODUCT ONLY
IN A WELL
VENTILATED AREA.
WARNING: Risk of asphyxiation.
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
dangerous carbon monoxide
will result.
19. Manufacturer will not be liable for any changes
made to our standard machines or any components
not purchased from us.
20. The best insurance against an accident is precau-
tion and knowledge of the machine.
IMPORTANT SAFETY INFORMATION
Gasoline engines on mobile or portable equipment
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. with an allowance made for expansion of the
fuel should the equipment be exposed to a
higher ambient temperature.
In an overfilling situation, additional precautions are
necessary to ensure that the situation is handled
in a safe manner.
WARNING: Risk of injury. Disconnect battery
ground terminal before servicing.
8. When in use , do not place machine near flammable
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 use gasoline in your fuel oil tank. Gasoline
is more combustible than fuel oil and could result
in a serious explosion. NEVER use crankcase or
waste oil in your burner. Fuel unit malfunction 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-insu-
lated areas of the pressure
washer.
12. Transport/Repair with fuel tank EMPTY or with fuel
shut-off valve OFF.
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STREAM AT PERSONS.
CAUTION: Hot discharge fluid.
Do not touch or direct 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.

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
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PRESSURE WASHER
OPERATOR’S MANUAL
IMPORTANT SAFETY INFORMATION
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING: Be extremely careful
when using a ladder, scaffolding
or any other relatively unstable
location. The cleaning area
should have adequate slopes
and drainage to reduce the pos-
sibility 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 open the spray gun to relieve pres-
sure. Failure to properly cool down or maintain the
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 medications,
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 871SS • 8.914-410.0 • Rev. 05/11A
OPERATOR’S MANUAL
PRESSURE WASHER
8
COMPONENT IDENTIFICATION
Trigger Gun
Control Box
High
Pressure Hose
Wand
Burner Exhaust
Vent
Coil Drain Plug
Hour
Meter
Engine Fuel Tank
Burner
Pump
Detergent
Inlet Line
Burner
Fuel Tank
High Pressure
Nozzles
Thermostat
Burner Switch
Engine
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.
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, prevents over pressurization.
Unloader

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
9
PRESSURE WASHER
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.)
■Quick Disconnects (2 Ea.)
■Quick Disconnect Plug
■Trigger Gun
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.
Figure 1 - Pressure Hose Installation
Coil Outlet
Trigger
Gun
Quick
Disconnect
Quick
Disconnect
Wand
Quick Disconnect Plug
Pressure
Hose
Figure 2 - Wand Component Installation
Pressure Hose
Relief Valve

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
OPERATOR’S MANUAL
PRESSURE WASHER
10
INSTALLATION INSTRUCTIONS
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
from coming in contact with the pressure washer. Moisture
reaching the equipment will reduce the pressure washer’s
service life. All installations must comply with the local
codes covering such installations.
Venting
DANGER: DO NOT run machine indoors or in an
enclosed area, as exhaust fumes may be hazardous
to your health.
DANGER: DO NOT operate machine in areas where
flammable vapors (gasoline, solvents, etc.) may be
present, as this machine may ignite the vapors.
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, a flue must be installed to vent burner 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 Figure 1 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 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 through the
roof at a proper height and location to 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.
In addition, the pressure washer should 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.
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 an authorized engine
sales and service center for details.
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 die-
sel)

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
11
PRESSURE WASHER
OPERATOR’S MANUAL
Oil Burner
Burner Air Adjustment: The oil burner on this machine
is preset for operation at altitudes below 1000 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. Loosen
two locking screws found in the air shutter openings
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
exhaust vent 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.
INSTALLATION INSTRUCTIONS
Figure 3 - Burner Adjustment
10
8
6
4
2
Air Shutter Locking Screw
Air Shutter
Air Band
Air Band
Locking Screw
Air Shutter
Locking Screw

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
OPERATOR’S MANUAL
PRESSURE WASHER
12
Figure 4 - Nozzle Installation/Manual Trigger Lock
Manual Trigger Lock
Pressure
Nozzle
OPERATION INSTRUCTIONS
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 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 minimum 86
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
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
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 4.
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 4) The manual trigger lock should be used
whenever the trigger gun is not in use.
To Start
DANGER: DO NOT point wand or trigger gun at your-
self or at any person. Bodily injury may result from
water under high pressure.
WARNING: Wear eye, ear, hand, foot and skin protec-
tion at all times while operating pressure washer.
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
10 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
needed on warm engine). Move throttle lever to HALF
THROTTLE position.
5. Pull the rope starter slowly until resistance is felt, then
pull briskly. Do not allow the rope starter to snap back
against the engine. Return it 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 burner operation,
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
burner will light immediately with a small puff of smoke.
You may need to initially adjust your burner for peak
performance. See Oil Burner section under Instal-
lation. If smoke continues, contact Customer Service
at 1-303-792-5200. When the trigger of the trigger
gun is released or when the thermostat temperature
setting is reached, the burner will automatically turn
off.

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
13
PRESSURE WASHER
OPERATOR’S MANUAL
To Clean
DANGER: DO NOT place hands or fingers in front of
high pressure spray. Bodily injury may result.
The detergent injector valve operates by reducing the
volume of water, thus a vacuum is achieved and detergent
is drawn into the system. DO NOT reduce the water
inlet flow so the pump cavitates 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.
2. Completely open detergent control knob located
on the side of the detergent injector valve. Refer to
Figure 5.
3. Start the detergent suction by rotating the water
adjustment knob of the detergent injector valve.
Refer to Figure 6.Turning the knob counterclockwise
will pull detergent into the system. The flow may be
observed through the clear 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 30°to 60°
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.
Figure 5 - Detergent Injector Valve
Detergent Control Knob
Detergent
On
Water Adjustment Knob
Detergent
Off
Water
Increase
Water
Decrease
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
pressure does not push them away. 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. If detergents were used, draw clear water through 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.
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 the water supply hose to the garden
hose connector located on the pump. Turn on water
supply.
2. Place the detergent inlet line into a container of
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 trigger of the trigger gun and stop engine.
7. Turn off water supply and disconnect water supply
hose from the pump.
OPERATION INSTRUCTIONS

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
OPERATOR’S MANUAL
PRESSURE WASHER
14
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 6.
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. Squeeze the trigger of the trigger gun to relieve system
pressure.
For added protection, after anti-freezing, disconnect the
pressure hose from the machine and remove the coil drain
plug. 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 to the Gasoline Engine Manual for engine storage
information.
OPERATION INSTRUCTIONS
Garden Hose
Connector
Figure 6 - Winterizing
Funnel

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
15
PRESSURE WASHER
OPERATOR’S MANUAL
Figure 7 - Pump Lubrication
Oil Fill/Dipstick
Oil Drain Plug
Oil Gauge
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: To lubricate pump, use 30W non-detergent
oil for pump crankcase. Crankcase must be filled to center
of red dot on oil gauge found on the end of the pump, refer
to Figure 7. During the break-in-period, make sure the
oil is changed after the first 40 hours of operation. After
that, replace oil every 3 months or 500 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.
MAINTENANCE
Gasoline Engine
Refer to the provided Gasoline Engine Manual for
recommended maintenance.
Relief Valve
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 replacement
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.
Unloader Valve
WARNING:The unloader valve on this pressure washer
has been factory set and sealed and is a field nonad-
justable part. Tampering with the factory setting may
cause personal injury and/or property damage, and
will void the manufacturer warranty.
Burner Fuel Filter
Drain any water which has accumulated in fuel filter
and clean or replace filter element as needed.
Heating Coil
Coil Descaling: In hard water areas, scale buildup within
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
This hour meter will monitor the total hours of operation of
the pressure washer to signal when routine maintenance
is required.

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
PRESSURE WASHER Troubleshooting Guide
16
TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
GAS ENGINE WILL
NOT RUN.
Out of gas Replenish supply. Use only recom-mended
fuels. Refer to Before Starting under Op-
eration.
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 position.
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 pressure
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 cor-
rectly
Refer to To Clean for settings.
UNEVEN SPRAY
PATTERN.
Partially clogged or damaged pressure
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 recommend-ed fu-
els. Refer to Before Starting under Opera-
tion.
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 Squeeze trigger. Water must be spraying for
burner to light

HOTSY 871SS • 8.914-410.0 • Rev. 05/11A
17
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING
When ordering from your dealer, please provide the following:
Model Number: 871SS.
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
PRESSURE WASHER
WILL NOT PRODUCE
HOT WATER
...continued
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.
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 deter-gent
container.
Detergent injector valve not set
correctly
Refer to To Clean for settings.
Clogged detergent injector
check valve
Clean check valve at detergent injector inlet.
POOR CLEANING. Improper detergent concentra-
tion or mixing.
Mix detergent per manufacturer's instructions.
Ensure that powdered detergents are 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 871SS • 8.914-410.0 • Rev. 05/11A
29
PRESSURE WASHER WARRANTY
HOTSY LIMITED NEW PRODUCT WARRANTY
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.
SEVEN YEAR PARTS AND ONE YEAR LABOR WARRANTY:
Components manufactured by Hotsy, such as frames, handles, top and bottom wraps, float tanks, 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. Damage or malfunctions resulting from accidents, 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 IMPLIED WARRANTY 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 #8.914-410.0 • Revised 05/11A • Printed in U.S.A or México.