Hotsy 1260SS User manual

8.914-366.0
OPERATOR’S MANUAL
 1260SS  1260SSG  1270SS  1270SSG  1280SS
 1280SSG  1285SS  1285SSG  1290SS  1290SSG
FOR TECHNICAL ASSISTANCE OR THE HOTSY DEALER NEAREST YOU,
CONSULT OUR WEB PAGE AT WWW.HOTSY.COM
1200
SERIES
89143660-1

1260SS SPECIFICATIONS
 Pump Volume At Pump Head: 4.3 GPM/258 GPH
 Pump Pressure At Pump Head: 3000 PSI
 Burner Type: Fuel Oil Fired, 385,000 BTU/Hr.
 Burner Fuel Pressure: 150 PSI
 Burner Exhaust Stack: 10”
 Machine Power: Briggs Vanguard
 Machine Weight: 690 Lbs.
 Shipping Weight: 780 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1270SS SPECIFICATIONS
 Pump Volume At Pump Head: 4.5 GPM/270 GPH
 Pump Pressure At Pump Head: 4000 PSI
 Burner Type: Fuel Oil Fired, 385,000 BTU/Hr.
 Burner Fuel Pressure: 150 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Honda GX630
 Machine Weight: 750 Lbs.
 Shipping Weight: 840 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1280SS SPECIFICATIONS
 Pump Volume At Pump Head: 5.2 GPM/306 GPH
 Pump Pressure At Pump Head: 3500 PSI
 Burner Type: Fuel Oil Fired, 385,000 BTU/Hr.
 Burner Fuel Pressure: 150 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Honda GX630
 Machine Weight: 750 Lbs.
 Shipping Weight: 840 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1260SSG SPECIFICATIONS
 Pump Volume At Pump Head: 4.3 GPM/258 GPH
 Pump Pressure At Pump Head: 3000 PSI
 Burner Type: Fuel Oil Fired, 398,000 BTU/Hr.
 Burner Fuel Pressure: 160 PSI
 Burner Exhaust Stack: 10”
 Machine Power: Briggs Vanguard
 Machine Weight: 720 Lbs.
 Shipping Weight: 810 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1270SSG SPECIFICATIONS
 Pump Volume At Pump Head: 4.5 GPM/270 GPH
 Pump Pressure At Pump Head: 4000 PSI
 Burner Type: Fuel Oil Fired, 398,000 BTU/Hr.
 Burner Fuel Pressure: 160 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Honda GX630
 Machine Weight: 780 Lbs.
 Shipping Weight: 870 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1280SSG SPECIFICATIONS
 Pump Volume At Pump Head: 5.2 GPM/306 GPH
 Pump Pressure At Pump Head: 3500 PSI
 Burner Type: Fuel Oil Fired, 398,000 BTU/Hr.
 Burner Fuel Pressure: 160 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Honda GX630
 Machine Weight: 780 Lbs.
 Shipping Weight: 870 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"

1285SS SPECIFICATIONS
 Pump Volume At Pump Head: 5.2 GPM/306 GPH
 Pump Pressure At Pump Head: 3500 PSI
 Burner Type: Fuel Oil Fired, 385,000 BTU/Hr.
 Burner Fuel Pressure: 150 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Briggs Vanguard
 Machine Weight: 750 Lbs.
 Shipping Weight: 840 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1290SS SPECIFICATIONS
 Pump Volume At Pump Head: 5.6 GPM/336 GPH
 Pump Pressure At Pump Head: 3000 PSI
 Burner Type: Fuel Oil Fired, 385,000 BTU/Hr.
 Burner Fuel Pressure: 150 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Honda GX630
 Machine Weight: 750 Lbs.
 Shipping Weight: 840 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1285SSG SPECIFICATIONS
 Pump Volume At Pump Head: 5.2 GPM/306 GPH
 Pump Pressure At Pump Head: 3500 PSI
 Burner Type: Fuel Oil Fired, 398,000 BTU/Hr.
 Burner Fuel Pressure: 160 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Briggs Vanguard
 Machine Weight: 780 Lbs.
 Shipping Weight: 870 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"
1290SSG SPECIFICATIONS
 Pump Volume At Pump Head: 5.6 GPM/336 GPH
 Pump Pressure At Pump Head: 3000 PSI
 Burner Type: Fuel Oil Fired, 398,000 BTU/Hr.
 Burner Fuel Pressure: 160 PSI
 Burner Exhaust Stack: 10"
 Machine Power: Honda GX630
 Machine Weight: 780 Lbs.
 Shipping Weight: 870 Lbs.
 Machine Dimensions:
Length = 45", Width = 33", Height = 52"

CONTENTS
4
HOTSY 1200 • 8.914-366.0 • REV. /11
Introduction & Important Safety Information 6-8
Component Identification 9
Assembly Instructions 10
Installation 11-12
Operation Instructions 13-14
Detergents & General Washing Techniques 15
Shut Down Instructions & Storage 16
Maintenance 17
Troubleshooting Guide 18-19
Warranty

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
OPERATOR’S MANUAL PRESSURE WASHER
6
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 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.
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.)
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.

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
7
PRESSURE WASHER OPERATOR’S MANUAL
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.
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.
IMPORTANT SAFETY INFORMATION
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.
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.

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
OPERATOR’S MANUAL PRESSURE WASHER
8
IMPORTANT SAFETY INFORMATION
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 1200 • 8.914-366.0 • REV. 8/11a
9
PRESSURE WASHER OPERATOR’S MANUAL
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 Valve — 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, prevents over pressurization.
89143660-1
Burner
Exhaust
Battery
Box
Relief
Valve
Engine
Pump Unloader
Valve
Control Box
Float
Tank
Water
Inlet
Detergent
Valve
Fuel Oil
Tank
Gasoline
Tank
High
Pressure
Hose
Spray
Gun
Generator
120V “G”
Models Only
Detergent Line
w/Screen
Spray Wand

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
OPERATOR’S MANUAL PRESSURE WASHER
10
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.
Parts Included
• Pressure Washer
• Pressure Hose
• Pressure Nozzles (3 Ea.)
• Wand
• Trigger Gun
• Operations Manual
• Gasoline Engine Manual
Pressure Hose, Trigger Gun and Wand
1. Install the pressure hose on the pressure washer as
shown in Figure 3.
NOTE: The pressure nozzle is not to be installed at
this time.
2. Assemble wand components as shown in Figure 4.
3. Make sure all connections are secure.
Figure 4 - Trigger Gun/Wand Assembly
High
Pressure
Nozzle
Wand
Spray Gun
High
Pressure
Hose
Figure 3 - Pressure Hose Installation
89143660-2
Hose Quick
Disconnect
Outlet
Nipple
Safety
Relief
Valve
Manifold
Coil Outlet
Discharge

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
11
PRESSURE WASHER OPERATOR’S MANUAL
INSTALLATION
Getting Started
IMPORTANT: Proper initial installation of equipment
will assure more satisfactory performance, longer
service life, and lower maintenance cost.
IMPORTANT: The use of 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 fluids, adjustment 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 high-pressure wand from coming in contact with the
pressure washer. Moisture reaching the pressure washer
will reduce its service life. All installations should comply
with the local codes covering such installations.
IMPORTANT: DO NOT run machine indoors or in an
enclosed area where high ambient temperatures
exist. High ambient temperatures (above 100° F) can
cause engine oil failure and will greatly reduce the
engine’s performance.
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,
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
lid. 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 will
have to be supplied to 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.
Battery
WARNING: Batteries generate explosive gases during
normal battery operation. DO NOT expose the battery
to flame or sparks as these gases may ignite.
WARNING: Battery fluid is highly acidic. If battery fluid
contacts skin or clothing, wash immediately with soap
and water. If battery fluid enters eye, immediately flood
eye with running cold water for at least 15 minutes and
get immediate medical attention.
1. Refer to Figure 5.
2. Install battery (battery not included) in battery box as
shown. Use a standard automotive battery minimum
500 CCA (Cold Cranking Amps). It is recommended
that a dual cell battery (a battery with a separate cell
for emergency starting) be used.
3. To reduce the possibility of sparking attach the battery
cables in the following order. First attach the positive
battery cable (red) to the positive “+” terminal of the
battery. Next, attach the negative battery cable (black)
to the negative “-” terminal of the battery. To disconnect
the battery, remove the cables in the opposite order
as installed.
4. Install battery box lid and secure with strap provided.
Oil Burner
Burner Air Adjustment: The oil burner is preset for
operation at altitudes below 3000 feet. If operated at
higher altitudes, it may be necessary to adjust the air band
setting. Adjust the air band for a #1 or #2 smoke spot on
the Baccarat scale.
Figure 5 - Battery Installation
Black
Cable
Red
Cable

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
OPERATOR’S MANUAL PRESSURE WASHER
12
INSTALLATION
Beckett Oil Burner
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 6) and close
air shutter until black smoke appears from burner exhaust
vent. Note air band 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 Baccarat scale.
For additional burner component information, see
Figure 16. It is recommended that the oil burner be
serviced yearly or as needed. Contact your local service
center.
Hotsy Crossfire 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 band for a #1 or #2 smoke spot on the
Bacharach scale.
To adjust, start machine and turn burner ON. Loosen
two locking screws found on the air band and close air
band until black smoke appears from burner exhaust
vent. Note air band position. Next, slowly open the air
band until white smoke just starts to appear. Turn air
band halfway back to the previously noted position.
Tighten locking screws.
Hotsy Crossfire Oil Burner
Reference Numbers
Air Band Locking Screws
Air Band
CAUTION: If white smoke appears from burner ex-
haust vent during start-up or operation, discontinue
use and readjust air bands.
NOTE: If a flue is installed, have a professional service-
man adjust your burner for a #1 or #2 smoke spot on
the Bacharach scale.
Gasoline Engine
This 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.
Water Supply
This machine is designed to be connected to a pressurized
(20 to 100 PSI) water supply, capable of maintaining a
minimum of 6.0 GPM. If it is necessary to use a gravity
feed water tank, the following plumbing modifications will
be required.
A 1/2" NPT 3-way ball valve will need to be installed in the
water inlet line. Refer to Figure 7. Hotsy recommends the
use of Watts Regulator Valve #1/2 B6780 M1 (Hotsy P/N
921363) for this application. With this valve in place this
machine will be capable of using both a pressurized or
gravity feed water supply without additional modifications.
For proper operation it is important that the valve be fully
open for its intended supply. This will prevent air from being
drawn into the system from the non active source. Also
the pressure supply must still be connected to the float
tank. The connection of a pressurized supply directly to
the 3-way valve will prevent detergent from being drawn
into the system.
Figure 6 - Burner Air Band Adjustment
Air Adjustment
Screw
Pressure
Adjustment
Screw
Fuel
Pump
Air
Band
Air
Shutter

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
13
PRESSURE WASHER OPERATOR’S MANUAL
Before Starting
WARNING: Check hoses, fittings, wand, trigger gun
and fuel connections daily for signs of wear, cracks
and looseness, replace as required.
1. Read all manuals provided with this pressure washer.
Become familiar with location and function of all oper-
ating and safety controls.
2. Connect the water supply hose to the float tank water
inlet (standard garden hose connector). The water
faucet and supply hose must be capable of providing
6.0 GPM.
3. Fill the burner fuel tank. Use kerosene, #1 grade
home heating oil, #1 or #2 diesel fuel. DO NOT USE
GASOLINE.
4. Fill the gasoline tank. Use lead free gasoline minimum
86 octane. DO NOT use gasoline containing more
than 10% ethanol, 15% MTBE, or 5% methanol.
5. Check pump and engine oil levels.
6. If detergents are to be used, only use detergent for
pressure washers. Follow instructions on detergent
container.
IMPORTANT: Before installing the 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 the
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 end of wand, refer to Figure 8.
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 8. The manual trigger lock should be used
whenever the trigger gun is not in use.
Fuel Pump
Some 1200 models are equipped with an electric fuel
pump which operates only when the engine is running.
The pump is primed when the key switch is held in the
OPERATION INSTRUCTIONS
start position. In the event that the engine stalls for any
reason the fuel pump will shut off.
WARNING: The fuel pump installed on this machine
has been adjusted at the factory to provide a max-
imum pressure of 1.3-1.7 PSI at the pump outlet.
Whenever the fuel pump is replaced the new pump
must be adjusted using the following procedure:
1. Place the ignition switch in the OFF position.
2. Disconnect the fuel line from the engine mounted fuel
filter and connect a fuel pump pressure gauge (0-5
PSI) to the fuel pump discharge line.
3. Turn the ignition key to the start position and
observe pressure gauge. Pressure must be set to
between 1.3 and 1.7 PSI. It will be necessary to bleed
off accumulated pressure in line prior to each gauge
reading. Turn screw on top of fuel pump to adjust pres-
sure (CCW to decrease, CW to increase).
4. After adjustment, reconnect fuel line to engine
mounted fuel filter and start machine. Check for fuel
leakage and tighten fittings/clamps as required.
To Start
DANGER: DO NOT point wand or spray gun at your-
self or at any person. Bodily injury may result from
water under high pressure.
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 gun closed for more than 3 minutes at any
time or damage to pump may occur.
1. Turn water ON.
2. Hold wand firmly with trigger gun in the closed po-
sition.
3. Turn fuel shut-off valve counterclockwise (CCW) to
open. Move choke lever to full choke position. Choke
may not be needed on warm engine.
4. Move throttle control to half throttle.
5. Turn key on engine clockwise (CW) hold until engine
starts. DO NOT crank engine for longer than 15 sec-
onds at any one time or starter damage may occur. If
the engine does not start, it may have air in the gas
lines and be unable to pull gasoline from the fuel tank.
This symptom may appear if the engine has not been
run recently or had been run until all gasoline was
depleted from gas lines.
6. When the engine starts, move choke lever until
engine runs smoothly. Then move throttle control to
full throttle. When engine warms, move choke to no
choke position.
IMPORTANT: To allow for proper battery charging and
AC generator operation the throttle control MUST be
kept in full throttle position as soon as choke lever
is placed in no choke position.
Figure 8 - Nozzle Installation/Manual Trigger Lock
Manual Trigger Lock
Pressure
Nozzle

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
OPERATOR’S MANUAL PRESSURE WASHER
14
7. Holding wand firmly, squeeze the trigger gun open.
Allow air to purge from system.
8. If hot water is desired, adjust the thermostat to proper
temperature. Close the trigger gun and turn burner
switch ON.
IMPORTANT: The throttle control must be in the full
throttle position or damage to the AC generator or
burner may result.
9. Open the trigger gun. The burner will fire immediately
with a puff of smoke. If smoke continues, refer to
the Troubleshooting Guide in this manual. When the
trigger gun is closed or the temperature setting is
reached, the burner will automatically turn off.
OPERATION INSTRUCTIONS

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
15
PRESSURE WASHER OPERATOR’S MANUAL
WARNING: Some detergents
may be harmful if inhaled or
ingested, causing severe nau-
sea, fainting or poisoning. The
harmful elements may cause
property damage or severe
injury.
STEP 1: Use detergent designed
specifically for pressure wash-
ers. Household detergents could
damage the pump. Prepare de-
tergent solution as required by
the manufacturer. Fill a container
with pressure washer detergent.
Place the filter end of detergent
suction tube into the detergent
container.
STEP 2: With the engine running, pull trigger to operate
machine. Liquid detergent is drawn into the machine
and mixed with water. Apply detergent to work area.
Do not allow detergent to dry on surface.
IMPORTANT: You must flush the detergent after
each use by placing the suction tube into a bucket
of clean water, open detergent valves then run the
pressure washer for 1-2 minutes.
THERMAL PUMP
PROTECTION
If you run your pressure washer for 3-5 minutes without
pressing the trigger on the spray gun, circulating water
in the pump can reach high temperatures. When the
water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm
water onto the ground. This thermal device prevents
internal damage to the pump.
CLEANING TIPS
Pre-rinse cleaning surface with fresh water. Place de-
tergent suction tube directly into cleaning solution and
apply to surface at low pressure (for best results, limit
your work 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 re-
move the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash
a small area, then check the surface for dam-
age. 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 dam-
age the surface being cleaned.
RINSING
It will take a few seconds for the detergent to clear. Apply
safety latch to spray gun and close detergent valve. Select
and install the desired high pressure nozzle.
WARNING
DETERGENTS & GENERAL WASHING TECHNIQUES

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
OPERATOR’S MANUAL PRESSURE WASHER
16
SHUTDOWN INSTRUCTIONS & STORAGE
1. If detergents were used, draw clear water through
the system to purge detergent.
2. If burner was used, turn OFF burner switch, and
allow pump to run cold water through coil.
3. Move throttle control to idle position.
4. Turn key on engine counterclockwise (CCW)
to OFF position.
5. Turn OFF fuel shut-off valve.
6. Turn OFF water supply.
7. Squeeze trigger gun open to relieve system
pressure.
STORAGE
DANGER: Do not store flammable liquids (gasoline,
solvents, etc.) near pressure washer, or in non-ven-
tilated areas.
Protect from freezing by storing in a heated area, or by
flushing the system with antifreeze. To flush the system,
fill the float tank with antifreeze and remove spray nozzle
from wand. Start the machine and allow it to run until
antifreeze flows from the end of the wand. Place end of
wand into float tank and circulate the antifreeze through
system for several minutes. Open and close the trigger
gun several times to circulate antifreeze through the
unloader valve. Place detergent line into the float tank.
Open the detergent metering valve to draw antifreeze into
the detergent system.
If the pressure washer is not to be used for a considerable
length of time, it is recommended to flush the system with
antifreeze for rust protection.

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
17
PRESSURE WASHER 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
Use HOTSY Pump Oil (P/N 315068) or equivalent 30W
non-detergent oil for pump crankcase. Crankcase must be
filled to the full mark on the dipstick or to center of sight
glass window found on the rear of the pump. During the
break-in period, make sure the oil is changed after the
first 25 hours of operation. After that, replace oil every 3
months or 300 hours, whichever comes first.
DO NOT:
1. Pump acids.
2. Fail to winterize in freezing temperatures.
3. Allow pump to run dry.
4. Allow machine to run with trigger gun closed for more
than 3 minutes at any one time or damage to pump
may occur.
DO:
1. Use a water softener on the water system if known to
be high in mineral content.
2. Use only high quality detergents and follow manufac-
turer's mix recommendations.
3. Immediately after using detergent solutions the sys-
tem should be flushed thoroughly with clear water.
4. Clean strainer screen on detergent line periodically.
Unloader Valve
WARNING: The unloader valve on this pressure
washer has been factory set and sealed and is a field
nonadjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty.
Burner Fuel Filter
Drain water that has accumulated in fuel filter and clean
filter element as needed.
Heating Coil
Coil De scaling: 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 de
scaling is needed.
Coil De sooting: Poor grades of fuel oil or inadequate
combustion air will cause heavy soot buildup on the
outside surface of the heating coil. This will restrict the
airflow through the coil, further aggravating the soot
buildup. Contact your local service center when de sooting
is needed.
Engine
Refer to engine manual provided with this pressure
washer for recommended maintenance.
Oil Burner Blower Motor
The motor bearings are permanently lubricated and will
not require any additional lubrication.
Battery
Refer to battery manufacturer’s literature for recom-
mended maintenance

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
PRESSURE WASHER Troubleshooting Guide
18
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
ENGINE WILL
NOT RUN
No fuel Replenish supply.
Low battery Charge battery.
Poor battery cable connection Clean battery terminals
and check cables.
Refer to provided engine manual for addtional troubleshooting.
NO WATER FROM
PRESSURE NOZZLE
Pressure
nozzle clogged
Clean
pressure nozzle.
Inlet water screen clogged. Clean.
Pumping
sucking air
Fill the detergent container. Check
for loose hose clamps or fittings.
POOR OR NO
DETERGENT
FLOW
Low detergent level Replenish supply.
Detergent screen clogged Clean.
Detergent metering
valve not opening
Check that handle or knob
is not slipping on shaft.
Pressure nozzle clogged Clean.
LOW PRESSURE
FROM SPRAY
NOZZLE.
Inlet clogged Clean
Spray nozzle worn
or incorrect size Replace.
Inadequate water supply Increase water supply.
Pump sucking air Fill the detergent container. Check
for loose hose clamps or fittings.
UNLOADER
VALVE CYCLES
WHEN TRIGGER
GUN IS OPEN
OR CLOSED
Air in system Open and close trigger gun several times.
Defective unloader valve. Repair or replace.
Water leak between unloader
valve and trigger gun.
Check fittings, hose and trigger
gun for leaks. Repair or replace.
BURNER WILL
NOT IGNITE
WHEN TRIGGER
GUN IS OPEN
No fuel Replenish supply.
Adjustable thermostat set too low
Defective pressure switch
Electrodes are dirty or out of
adjustment
No AC generator output
Raise temperature setting.
Repair or replace.
Refer to OIl Burner Manual
provided with machine.
Check AC generator.
BURNER SMOKES
OR HAS OBNOXIOUS
ODOR
Air bands need to
be adjusted
Improper fuel
Readjust. Refer to Oil Burner
Section under Installation.
Use kerosene, #1 Grade Home Heating Oil,
#1 or #2 Diesel Fuel.
DO NOT USE GASLONE.

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
19
PRESSURE WASHER Troubleshooting Guide
When ordering from your dealer, please provide the following:
Model Number: _______________________________________
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 or
by calling 1-800-525-1976.
TROUBLESHOOTING

HOTSY 1200 • 8.914-366.0 • REV. 8/11a
53
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, rupture disks, 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.