North Star 157117 User manual

1
M157117B
Owner’s Manual
Instructions for Set-up, Operation, Maintenance & Storage
HOT WATER/STEAM PRESSURE WASHER –3500 PSI /3.5 GPM
Portable Outdoor-Use Only
This pressure washer produces both cold and hot water high-pressure spray as well as wet steam. Cleaning
chemicals may be incorporated into the spray if desired. The pressure pump for this equipment is powered
by a gasoline internal combustion engine and the water is heated by a diesel, kerosene/fuel-oil fired, down
draft burner.
WARNING –READ THIS MANUAL
READ and UNDERSTAND this Owner’s Manual and the Engine Owner’s Manual completely
before attempting to set up and use the pressure washer! Failure to properly set up, operate, and
maintain this pressure washer could result in serious injury or death to operator or bystanders.
WARNING –SPECIAL HAZARDS
CO Poisoning
•Exhaust from both the engine and burner contains carbon monoxide, a
poisonous gas that can cause carbon monoxide poisoning and possible death
if inhaled. ONLY run pressure washer OUTDOORS and at least 20 feet from
the home, away from windows, vents and air intakes, to allow proper
ventilation. If you start to feel sick, dizzy, or weak while using the pressure
washer, shut off the engine and get to fresh air RIGHT AWAY.
Skin/Eye Injury
•High-pressure spray can cause serious skin or eye injury, including injection
injury if fluid pierces the skin. Injection injury can result in blood poisoning
and/or severe tissue damage.
Burns
•Hot spray can scald and burn skin.
•Hot surfaces of wand, engine and burner, as well as hot exhaust from
both the engine and burner can cause burns.
Slips/FallsNOTE
•Spray discharge can cause puddles and slippery surfaces.
•Spray-gun kickback can cause operator loss of balance and falls.
Flying Debris
•High-pressure spray can cause surface damage and flying debris.
Fire/
Explosion
•Engine and burner sparking can ignite fuel or other flammable liquids
or vapors in the vicinity.
•Hot exhaust from engine and burner can ignite combustible materials.
Chemical Exposure
•Cleaning chemical vapors or contact with skin may be hazardous.
Electric shock
•Spray contact with electrical sources can cause electric shock.
A summary of important safety information is provided at the end of the manual.
Any Questions, Comments, Problems, or Parts Orders
Call NorthStar Product Support 1-800-270-0810
ITEM NUMBER: 157117
SERIAL NUMBER: _____________

Hazard Signal Word Definitions
2
Equipment Protection Quick Facts
Inspect Upon
Delivery
STOP! Closely inspect to make sure no components are missing or damaged. See the
“Assembly and Initial Set-Up” section for instructions on whom to contact to report missing or
damaged parts.
Fill with
Engine Oil
STOP! Engine is shipped without oil. DO NOT start pressure washer without adding oil to
engine. Please refer to Engine Manual shipped with unit for acceptable grade motor oils. Refer
to the Prepare Engine instructions in Step 3. Initial Pump & Engine Preparation of the Assembly
and Initial Set-up section for additional oil quantity needed due to oil drain hose.
Check Pump
Oil
Pump is shipped with oil. Check pump oil level before starting. Remove shipping tape and
black vent plug (if present) from oil fill cap.
Battery
Required
A battery is not included. The engine will run but the burner will not fire unless a bat tery is
installed. Purchase a standard lawn and garden (Group U1) battery. The engine requires a 12V
battery, with a minimum rating of 18 Ah (Amp-hour).
Water Flow
Requirements
Make sure your supply water flow rate is 20% higher than the pressure washer’s flow rate
(see “Specifications” section for detail), and that your water is clean and particle free.
Storage
Do not allow water to freeze in the pump, hose, coil, or spray gun(s).
Chemical
Spraying
Use only NorthStar brand or equivalent washer chemicals designed for pressure washer
use.
Maintenance
Schedule
Engine:
•See Engine Owner’s manual.
Pump:
•Change oil after first 40 hours, then every 3 months or 500
hours.
Burner fuel filter
/water separator:
•Drain water as needed.
•Change filter after every 500 hours of use
Coil:
•Descale coil annually or more frequently as conditions /
performance require.
•Inspect coil for soot build-up annually and desoot if needed.
Electrodes:
•Inspect electrodes annually and clean/adjust as needed.

Table of Contents
3
About Your Pressure Washer .....................................................................................................................4
Specifications.................................................................................................................................................5
Component Identification.............................................................................................................................6
Safety Labeling..............................................................................................................................................8
Special Equipment Safety Features.............................................................................................................9
Assembly and Initial Set-Up ........................................................................................................................10
Step 1. Unpacking & Delivery Inspection .................................................................................................10
Step 2. Assembly .......................................................................................................................................12
Step 3. Initial Pump & Engine Preparation................................................................................................13
Step 4. Battery Installation.........................................................................................................................13
Moving and Handling ..................................................................................................................................14
Before Each Use ............................................................................................................................................15
Step 1. Check Equipment...........................................................................................................................15
Step 2. Add Fuel(s)....................................................................................................................................16
Step 3. Select a Suitable Worksite .............................................................................................................18
Operation.......................................................................................................................................................20
Step 1. Connect Hose(s), Water Supply, and Spray Nozzle(s)..................................................................20
Step 2. Set Up for Chemical Spray (if desired)..........................................................................................23
Step 3. Spraying.........................................................................................................................................24
Step 4. Stopping.........................................................................................................................................30
Storage............................................................................................................................................................31
Burner Adjustment ......................................................................................................................................35
Maintenance and Repair .............................................................................................................................36
Troubleshooting.............................................................................................................................................51
Major Components .......................................................................................................................................53
Parts Explosion: Frame –Rev B..................................................................................................................54
Parts Explosion: Heat Exchanger –Rev B..................................................................................................57
Parts Explosion: Blower & EMF –Rev B...................................................................................................59
Parts Explosion: Engine, Water & Fuel Pumps, Drive Parts –Rev B.....................................................61
Parts Explosion: Accessories- Gun, Hose, Chemical Injector –Rev B ....................................................64
Pump Explosion-66DX- Rev B.....................................................................................................................65
Wiring Diagram –Rev B .............................................................................................................................67
Summary of Important Safety Information ..............................................................................................69
Limited Warranty ........................................................................................................................................75
California Proposition 65 Information .......................................................................................................78

About Your Pressure Washer
4
Thank you for purchasing a NorthStar hot water pressure washer! Your machine is designed for long life,
dependability, and the top performance you demand. This pressure washer is designed to:
1) Produce a high-pressure wet steam spray or water spray (heated or unheated) -- up to 3.5 gallons per
minute at 3500 psi.
2) Incorporate cleaning chemicals into a low-pressure water spray.
Wet steam is a combination of liquid water droplets and water vapor. Wet steam delivers more heat, and a
balanced amount of flow and Impact which increase cleaning effectiveness and reduces spray back.
The pump requires a clean, standard tap water supply provided through a garden hose at a flow rate of at least
4.2 gallons per minute. The use of a backflow preventer on the water supply hose is recommended and may be
required by local code. Any cleaning chemicals that are used must be specifically approved for use in pressure
washers.
The pump is powered by a gasoline-fueled engine. The spray water is heated (when desired) by a diesel,
kerosene/fuel-oil fired, spark-ignited, down draft burner. Normal operation of this equipment will require you to
supply:
•Gasoline fuel and lubrication oil for the engine
•Pump oil
•Fuel for the burner (diesel, kerosene, or fuel oil)
•A 12-volt standard Lawn and Garden battery
See the “Specifications” section of this manual for more detail.
Gasoline powered pressure washers are for OUTDOOR USE ONLY. Be sure to read about site selection
for running this pressure washer in the “Before Each Use” section of this manual.
The user should plan to acquire and wear safety apparel during operation of this pressure washer. Safety apparel
includes waterproof insulated gloves, safety glasses with side and top protection, and non-slip protective
footwear. Some cleaning chemicals may require the use of a respirator mask (as instructed on chemical label).
Before using this washer, the user shall determine the suitability of this product for its intended use
and assumes liability therein. Read this Manual
WARNING
Carefully read and follow all instructions and safety information for using this
pressure washer. Improper use or maintenance of the pressure washer can result in
serious injury or death to the operator or bystanders from:
•Carbon monoxide
poisoning
•Fire/explosion
•Chemical exposure
•Skin/eye injury from
high pressure spray
•Burns
•Slips/falls
•Electric shock
•Flying objects/debris
Keep this manual for reference and review. A summary of important safety information can be found
at the end of the manual.
Proper preparation, operation, and maintenance of this pressure washer will result in optimal
performance and a long life for this equipment. For detailed Engine operation and maintenance
information, always refer to the Engine Owner’s Manual furnished with the pressure washer.
ATTENTION:
Rental Companies and Private Owners who loan this equipment to others!
All persons to whom you rent/loan this pressure washer must have access to and read this manual. Always
keep this owner’s manual with the pressure washer and advise all persons who will operate the machine to
read it. You must also provide personal instruction on how to safely set-up and operate the pressure washer
and remain available to answer any questions a renter/borrower might have.

Specifications
5
MODEL
Model #
157117
FLOW OUTPUT
Pressure Rating
3500 psi
Flow Rate
3.5 gpm
Maximum Temperature
250F
DIMENSIONS / COMPONENTS
Length
59"
Width
35.625"
Height
43"
Weight (fueled)
548 lbs.
Pump Type
66DX
Engine Model
Honda GX390
Engine Type
Air-cooled 4-stroke
Drive
Direct
Burner
12 VDC
Engine Displacement
389cc
High Pressure Discharge Hose
3/8” x 50’
Chemical Injection Ratio
13 to 1
SUPPLIES REQUIRED (not included)
Engine Fuel
Regular, Unleaded Gasoline
(Capacity: 8 Gal.)
Engine Oil
See Engine Owner’s Manual and Step 3 of
the Assembly and Initial Set-up section for
additional oil quantity needed due to oil
drain hose.
Burner Fuel
#1 or #2 Diesel, B5 or lower Biodiesel,
Kerosene, or Fuel Oil
(Capacity: 8 Gal.)
Pump Oil
(shipped with oil, but refills required)
SAE 30 non-detergent oil
Input Water Supply
Standard tap water @ 20-75 psi, delivered
@ 4.2 gpm or higher
Input Water Supply Hose
Standard garden hose with inside diameter
at least 5/8” (at least 3/4” diameter if hose
longer than 100 ft.)
Battery
12 Volt, minimum 18 Amp/Hr.
Lawn and Garden Battery (Group U1)

Component Identification
6
Ref #
Description
Ref #
Description
Ref #
Description
1
High PSI limit switch
10
High Pressure Outlet
19
Nozzle Storage
2
Flow Switch
11
Fuel Filter/Water Separator
20
Thermal Relief Valve
3
Heating Coil
12
Heat Exchanger
21
Air, Fuel, Ignition System
4
Garden Hose Water
Inlet
13
Gas Tank & Cap
22
Chemical injector
5
Pump
14
Spray Gun
23
Rupture Disc Fitting
6
Diesel Fuel Tank
15
Wand
24
Flame Sensor
7
Diesel Fuel Cap
16
Control Box (See Detail A)
25
Hose reel (sold by Separately)
8
Unloader
17
Circuit Protector
26
Battery Box
9
Engine
18
Heat Switch
Fig06883
1
3
6
9SEE DETAIL D
5
7
8
11
13
2
4
10
12
16
SEE DETAIL A
19
SEE DETAIL B
22
25
14
15
DETAIL B
20
AIR, FUEL, IGNITION SYSTEM
FAN, FLYWHEEL,
& STATOR ASSEMBLY
BURNER FUEL PUMP
FUEL PUMP SHEAVE
PRESSURE WASHER PUMP
BELT, MICRO-V J 4
RIB X 36"
DETAIL D
24
DETAIL C
23
DETAIL A
17
18
21
26

Component Identification cont’d
7
REFERENCE GUIDE
1. High, PSI limit switch
This is a backup safety feature, if the system pressure exceeds the set
pressure this device will stop the burner from firing.
2. Flow Switch
Mechanical device that senses water flow
3. Heating Coil
Steel piping wound together with an inlet for incoming cold water
and outlet for hot water to exit.
4. Garden Hose Water Inlet
Means of connecting garden hose to pump inlet. Connect garden hose
here.
5. Pump
A device that moves fluid through a combination of suction and
displacement.
6. Diesel Fuel Tank
Fuel storage container for diesel fuels.
7. Diesel Fuel Cap
Vented cover for fuel tank.
8. Unloader
Valve that regulates pressure and directs flow into bypass when
trigger is closed.
9. Engine
The air-cooled engine powers the pump.
10. High Pressure Outlet
Connection point for the high-pressure hose.
11. Fuel Filter / Water Separator
Filter in fuel line that removes water and screens out dirt and debris
from fuel.
12. Heat Exchanger
Device that heats the water by forcing a flame across steel pipe.
13. Gas Tank & Cap
Gas tank is a container for holding gas and gas cap is cover for gas
tank.
14. Spray Gun
Used to divert water out to nozzle.
15. Grip
Section of wand to extend length and provide stability.
16. Wand
Rod to extend length.
17. Control Box
Housing device for mounting switches and machine controls.
18. Circuit Breaker
Device for protecting circuit from damage if overloaded or shorted.
19. Heat Switch
Acts as an on/off device for power to burner components.
20. Nozzle Storage
A space for storing nozzles.
21. Thermal Relief Valve
Safety device that discharges hot water from the pump manifold
during long bypass operation.
22. Air, Fuel, Ignition System
System provides air, fuel, and ignition for combustion
23. Chemical Injector
Siphons cleaning chemicals into a law pressure washer spray
downstream of the pump.
24. Rupture Disc
Safety device that will open and relieve excess system pressure.
25. Flame Sensor
Device for sensing if the burner has a flame.
26. Battery Box
Storage place for battery.

Safety Labeling
8
Always make sure safety labels are in place and in good condition. If a safety label is missing or not legible,
order new labels or unsafe operation could result. To order replacement safety labels, call NorthStar Product
Support at 1-800-270-0810.
Ref.#
Part #
Description
Qty.
1
782325
Decal, Danger and Warning
1
2
786632
Decal, Rotating Equipment Warning
1
3
3.1
798057
32821
Hangtag, Rupture Disk Warning
Lanyard, Hangtag Warning
1 1
4
797513
Decal, Burn Hazard Decal
2
5
788936
Decal, Burn Hazard Warning
1
6
801160
Decal, Recoil Warning
1
7
802203
Decal, Descaling Warning
1
8
782397
Decal, Battery Warning
1
Fig157117-2
5
1
4
2
6
5
1
4
2
6
7
8
4
1
2
5
6
3
VIEW ROTATED FOR CLARITY
3.1
5
1
4
2
6
7
8

Special Equipment Safety Features
9
High Pressure
Safety Device
(Rupture Disc)
WARNING: If the high-pressure safety device ever discharges water, turn the
engine off and do not use the machine. Call Product Support at 1-800-270-0810.
This unit is equipped with a high-pressure
safety feature. If the unloader malfunctions the
high-pressure safety device will open and relieve
excess system pressure.
Temperature
Sensor
(Thermistor)
This unit is equipped with a
temperature sensor that measures water
temperature and automatically turns the
burner off when the temperature setting is
reached or is at maximum preset limit.
When the water temperature drops,
the burner automatically reignites.
Thermal Relief
Valve
This unit is equipped with a thermal relief valve to protect the pump from
overheating. The pump continues to work in bypass mode when you are not
spraying. If high temperatures are developed during bypass mode, the thermal
relief valve will open and discharge hot water onto the ground, protecting the pump
from overheating. The thermal relief valve is located on the unloader bypass port.
Spray Gun
Safety Latch
The spray gun is equipped with a built-in trigger safety latch to guard against
accidental trigger actuation.
High Pressure
Limit Switch
This unit is equipped with a high-pressure
limit switch which acts as a primary safety
feature. If the system pressure exceeds the
set pressure limit this device will stop the
burner from firing.
00417
Safety Latch
Fig06830
HIGH PRESSURE LIMIT SWITCH
High Pressure Rupture Disc
TEMPERATURE SENSOR
Fig06831
Fig06067

Assembly and Initial Set-Up
10
STEPS FOR ASSEMBLY / INITIAL SET-UP
STEP 1. UNPACKING & DELIVERY INSPECTION
STEP 2. ASSEMBLY
STEP 3. INITIAL PUMP & ENGINE PREPARATION
STEP 4. BATTERY INSTALLATION
Each of these steps is discussed below:
STEP 1. UNPACKING & DELIVERY INSPECTION
Find and separate the components identified in Fig157117-3 –Unpacking, delivery, inspection, assembly
and initial set-up and Fig157117-16 –Hardware Bag. Inspect the pressure washer immediately after you
receive delivery for missing parts and damage.
•If you have missing or damaged components, contact Product Support at 1-800-270-0810.
Fig157117-3
Hardware Bag
Handle Weldment
Qty-1
800118
Pressure Washer
High Pressure Hose
Qty-1
799903
Spray Gun
Qty-1
777420
Lance
Qty-1
777421

Assembly and Initial Set-Up
11
Chemical Strainer
Qty-1
Part #221222
Fig157117_16
M8-1.25 Nylock Nut
Qty-2
Part #777495
Nozzle Pack
Qty-1
Part #800652
Steam Nozzle
Qty-1
Part #801090
Bolt, 5/16-18 Hex Head Flange Bolt
Qty-2
Part #82621
Hose Hook
Qty-1
Part #800615
Nut, 5/16-18 Hex
Flange Nyloc
Qty-2
Part #82630
Chemical Injector
Qty-1
Part #779614
1/4” Braided
Chemical Hose
Qty-4’
Part #777165
Washer, 5/16 flat
Qty-2
Part #82021
Funnel, flexible hose
Qty-1
Part #801131

Assembly and Initial Set-Up
12
STEP 2. ASSEMBLY
You must assemble your pressure washer before it can be used. Refer to Fig157117-4 and follow the steps
listed below:
INSTALL NOZZLES INTO
DESIGNATED NOZZLE
STORAGE LOCATION
INSTALL HOSE HOOK INTO
RIGHT SIDE OF HANDLE
USING TWO (2) 5/16-18 X 3/4"
FLANGE NUTS
5/16-18 X 3/4" TWO (2)
FLANGE NUTS
5/16-18 X 2 1/2" TWO (2)
HHSF GR5, BOLT
5/16" TWO (2)
FLAT WASHER
Step 1. Install handle with two (2) 5/16-18 x 2 1/2" Bolts, two (2) 5/16" flat washer through Base and
Handle and secure with two (2) 5/16-18 Flange Nuts.
Step 2. Install Hose Hook into right side of Handle using two (2) 5/16-18 Flange Nuts.
Step 3. Install Nozzles into designated nozzle storage location.
Fig157117-4

Assembly and Initial Set-Up
13
STEP 3. INITIAL PUMP & ENGINE PREPARATION
Prepare
Water Pump
Verify pump oil level.
Note: The pump is shipped with oil.
1. Remove shipping tape and black vent
plug (if present) from oil fill cap.
2. Verify that oil level is halfway up the
sight glass.
3. If oil level is low, fill using SAE 30 non-detergent oil or Cat Pump Oil Item # 22158.
Prepare
Engine
Fill the engine with oil.
Note: The engine is shipped without oil.
Refer to the Engine Manual to locate oil-fill port and for instructions on filling. Use the oil
grade and quantity specified in the Engine manual. Note: Engine is equipped with an Oil
Drain Hose. To account for the volume of the Drain Hose, an additional ounce of oil will
need to be added to the quantity specified in the Engine Manual.
STEP 4. BATTERY INSTALLATION
Install a 12-volt standard lawn and garden battery (Group U1) with a minimum 18 amp-hour rating.
The engine will run, but the burner will not fire unless a battery is installed.
The battery is to be supplied by the customer and should be installed in the protective battery compartment
located near the engine.
Follow the steps below for connecting and disconnecting the battery.
WARNING: Battery Hazards
Batteries are hazardous because they contain caustic acid, can emit explosive gases, and can cause
electric shock. Caution must be exercised when making connections to a battery to avoid
shock and contact with the acid, and to prevent any sparking that could lead to an explosion.
ALWAYS follow the general battery safety rules and instructions listed below.
General
Battery Safety
Rules
• ALWAYS use eye protection and protective clothing when handling batteries.
• NEVER smoke or work near sparks or other sources of ignition.
• NEVER touch both battery terminals at the same time with your hand or any non-
insulated tools.
• If battery acid contacts skin or clothing, flush immediately with water and neutralize
with baking soda.
Connecting
the Battery
Always connect the cables in the following sequence to avoid possible shock:
1. Find the battery cables located inside the battery compartment.
2. Connect the red cable to the positive (+) terminal of the battery.
3. Then connect the black cable to the negative (-) terminal of the battery.
Disconnecting
the Battery
Always disconnect cables in the following sequence to avoid possible shock.
1. First, disconnect the black cable from the negative (-) terminal of the battery.
2. Next, disconnect the red cable from the positive (+) terminal of the battery.
3. Remove the battery from the battery compartment.
Fig157117-5
DRAIN HOSE
PLUG
OIL CAP
OIL SIGHT GLASS

Moving and Handling
14
WARNING
The pressures washer is heavy. It can crush and cause serious injury if it rolls out of
control or tips over. Follow the instructions below for safely moving the pressure
washer.
MOVING AND HANDLING
HANDLE
Moving your
pressure washer
around
1. Use the handle to manually move the pressure washer.
2. To turn, push down slightly on the handle and pivot the pressure washer on its
back wheels.
3. Lock wheels with brake to prevent inadvertent movement.
Elevating or
lowering your
pressure washer
To reduce risk of injury, do not attempt to lift the pressure washer. Use a shallow
ramp to raise or lower the pressure washer to a different elevation.
Fig157117-6

Before Each Use
15
Follow the steps below prior to each use of the pressure washer.
STEPS TO FOLLOW BEFORE EACH USE
STEP 1. CHECK EQUIPMENT
STEP 2. ADD FUEL(S)
STEP 3. SELECT SUITABLE WORKSITE
STEP 1. CHECK EQUIPMENT
Check/add
pump oil
Check/add pump oil.
Caution: Never run the pump without sufficient lubrication!
1. Check oil level. Verify that oil level is halfway up the sight glass. Remove
shipping tape and black vent plug (if present) from oil fill cap.
2. If oil level is low, fill using SAE 30 non-detergent oil or cat pump oil item #22158.
3. Replace fill cap.
Check/add
engine oil
Check the engine oil level and add oil as needed.
Use the recommended oil type for your engine and expected ambient conditions.
(See Specifications section in this manual and the engine Owner’s Manual for oil type
and capacity, and more detailed oil check/fill instructions.)
WARNING: Burn hazard
Never open oil port while engine is running. Hot oil can spray over face
and body.
Notes:
oLow oil shutdown feature prevents the engine from starting without sufficient oil.
oEngine is shipped without oil. You must add oil before first use.
Inspect spray
system
Always inspect spray system for damage and leaks before each use.
Do not start pressure washer until all needed repairs have been completed.
WARNING: High pressure fluid injection hazard
High-pressure fluid discharge from leaks (even pin-sized) or ruptured
components can pierce skin and inject fluid into the body. Injection
injury can result in blood poisoning and/or severe tissue damage leading
to infection, gangrene, and possible amputation.
•Never use a finger or skin to check for leaks.
•Never operate machine with damaged or missing hoses/parts.
•Never attempt to repair a high-pressure hose or component –Always
replace it with a part that is rated at or above the pressure rating of this
machine.
1) Check hoses, fittings, wand, trigger gun and connections for signs of wear, cracks,
looseness, or leaks. Replace as required.

Before Each Use
16
2) Check and clean the nozzle orifice.
3) Clean inlet filter. (See Maintenance instructions)
Inspect fuel
system
Always inspect (engine and burner) fuel systems & check for leaks BEFORE
starting pressure washer.
Do not start pressure washer until all needed repairs have been completed.
WARNING: Fuel leak hazard
Gasoline and burner fuels are highly explosive and fuel leaks can result in
fire or explosions. You can be burned and seriously injured if the fuel
system is not properly hooked up or there is a fuel leak when you start the
engine.
Inspect the entire fuel system. Look for:
•signs of leaks or deterioration,
•chafed or spongy fuel hose,
•loose connections,
•loose or missing fuel hose clamps,
•damaged gasoline tank, or
•defective gasoline shut-off valve.
Perform other
scheduled
maintenance as
needed
Make sure that any other regular maintenance has been performed as prescribed
in this manual in the “Maintenance & Repair” section.
1. Refer to the engine owner’s manual for engine maintenance instructions.
2. Make sure battery is charged. Charge as needed according to your battery
manufacturer’s instructions.
STEP 2. ADD FUEL(S)
WARNING: Fuel fire/explosion hazard
Gasoline is highly flammable and explosive. Burner fuels are
combustible at warm temperatures. Heat, sparks, and flames can
ignite fuel vapors, which can become widespread during fueling. A
flash fire and/or explosion could result and cause serious injury or
death. Always use extreme care when handling fuels. Carefully follow
all instructions to avoid the following conditions which could result in
fuel ignition:
•gas vapor collection inside enclosures
•static electric sparks
•sparks from electric wiring, batteries, or running engines
•sources of heat (such as a hot engine, burner or exhaust)
•open flames, including pilot lights
Always follow these general safety rules when fueling:
1) Turn pressure washer off and allow to cool for at least two minutes before removing any fuel cap.
Note: A running, or still-hot engine or burner is hot enough to ignite fuel.

Before Each Use
17
2) Fill fuel tank OUTDOORS –never indoors. Fuel vapors can ignite if they collect inside an enclosure and
explosion can result.
3) Stay away from all sources of heat, sparks, and flames. Do not smoke.
4) Never pump fuel directly into the gas tank or burner at a gas station –it could cause a static electric spark.
Follow these steps to avoid static electric sparking during fueling:
•Use an approved portable container to transfer fuel to the pressure washer’s tank. (A
portable container made of metal or conductive plastic is preferred because it
dissipates charge to ground more readily.)
•Always place container on the ground to be filled. Never fill the portable gas
container while it is sitting inside a vehicle, trailer, trunk, or pick-up truck bed.
•Dissipate static charge from your body before beginning the fueling process by
touching a grounded metal object at a safe distance from fuel sources.
•Keep nozzle in contact with container while filling. Do not use a nozzle lock-open
device.
5) Clean up fuel spills /splashes immediately.
•If possible, move the pressure washer away from spilled fuel on the ground.
•Wipe up spilled fuel and wait 5 minutes for excess fuel to evaporate before starting engine.
•Fuel soaked rags are flammable and should be disposed of properly.
•If fuel is spilled on your skin or clothes, change clothes and wash skin immediately.
Fill engine fuel
tank
Check the gasoline tank level. If needed, fill tank with fresh unleaded gasoline from
a portable container.
1) Remove engine gas cap.
2) Add gasoline through the fill opening:
- Use only an UL-approved portable gasoline container to transfer the gasoline to
engine’s tank.
- Do NOT overfill the gasoline tank. Allow at least 1/2” of empty space below the
fill neck to allow for fuel expansion.
3) Replace gas cap securely before starting engine.
4) Store extra gasoline in a cool, dry place in an UL-approved, tightly sealed container.
Fill burner fuel
tank
(if planning to
use heated water)
If you are planning to use heated water, fill burner fuel tank with #1 or #2 diesel,
B5 or lower biodiesel, kerosene, or fuel oil.
Note: Always keep at least 1/2 Gallon (approximately .75") of fuel in the burner fuel
tank, even when running in cold mode. This will ensure the burner fuel pump is properly
lubricated.
1) Remove diesel fuel cap.
2) Add fuel through the fill opening. Do not overfill. Allow at least 1/2” of empty space
below fill neck to allow for fuel expansion.
3) Replace fuel cap securely before starting engine.
4) Wipe any excess fuel from unit before starting.

Before Each Use
18
STEP 3. SELECT SUITABLE OUTDOOR WORKSITE
Before using the pressure washer, you must understand the criteria for selecting a suitable location for
operation. Note that this pressure washer is for OUTDOOR USE only.
WARNING:
You must choose a suitable site for operating your pressure washer to avoid equipment
damage and/or injury and possible death from carbon monoxide poisoning, fire/explosion,
uncontrolled equipment movement/tip over, or slips and falls. Choose a site that meets all
of the following five criteria:
1. OUTDOORS only, and away from all building windows and air intakes.
2. Where no flammable vapors, dusts, and gases are present.
3. Where there is adequate, unobstructed ventilation airflow.
4. With adequate clearance from combustible materials.
5. On a firm, level, heat-resistant surface with good drainage.
Detail regarding each of these criteria are provided below.
1. Outdoors
ONLY
DANGER: Carbon monoxide poisoning hazard
Exhaust fumes from both the engine and the burner contain carbon monoxide
(CO), a poisonous gas you cannot see, smell, or taste. The CO generated by the
pressure washer can rapidly accumulate, even in areas that appear to be well
ventilated, resulting in dangerous and fatal concentrations within minutes. Follow
the directions below for choosing a location to operate your pressure washer in
order to avoid carbon monoxide poisoning.
The location you choose to operate the pressure washer must be OUTDOORS and
at least 20 feet from the home, away from windows, vents and air intakes, to allow
proper ventilation. If you start to feel sick, dizzy, or weak while using the pressure
washer, shut off the engine and get to fresh air RIGHT AWAY.
•Never run the pressure washer in an enclosed or partially enclosed location such as
a building, garage, barn, shed, or house. These spaces can trap poisonous gases.
Running a fan or opening windows will not provide adequate ventilation to prevent
dangerous CO build-up.
•Only use the pressure washer outdoors and far away from open windows, doors,
and building or vehicle vents.
•Place the pressure washer so that the exhaust fumes will not be directed towards
people or building air intakes.
•Ensure that working, battery-operated or battery back-up carbon monoxide alarms
are used in any dwelling/structure that is in close proximity to the running pressure
washer.
•Note that this pressure washer is NOT designed or approved for use in vehicles or
marine applications. Never run the pressure washer inside RVs or other vehicles,
on boats, or on pick-up truck beds.
WARNING:
Never attempt to attach ductwork to the engine muffler or burner exhaust
to allow for installation inside an enclosure. This could cause hot air
deflection, heat build-up, and increased exhaust backpressure, resulting in
possible exhaust leakage or overheating and damage to the pressure
washer.

Before Each Use
19
2. Away from
combustible
dust, liquids, or
vapors
Do not locate and use the pressure washer in the presence of flammable vapors,
dust, gases, or other potentially combustible materials. Burner is an open flame,
which can ignite airborne dusts and flammable vapors. Operate only where open flame
or torch is permitted.
3. Adequate
ventilation
airflow
The pressure washer needs adequate, unobstructed flow of air to allow for proper
combustion and adequate cooling. Proper combustion can only be obtained when
there is a sufficient supply of oxygen available for the amount of fuel being burned.
Cooling ventilation is required to prevent overheating of the pressure washer and
possible fire.
•Situate so there is adequate clearance around pressure washer to allow for airflow
–at least 7 feet from any non-combustible wall or obstruction.
•Never place any objects against or on top of the pressure washer.
•Do not operate with a tarp, blanket, or cover surrounding the pressure washer.
4. Hot exhaust
clearance
The exhaust gas from your pressure washer is extremely hot and can cause
combustible materials to catch on fire.
•Make sure both the engine exhaust and burner exhaust are at least 7 feet from all
combustible materials and structures during operation.
•Equip the engine with a spark arrestor if the pressure washer will be used near any
ignitable forest, brush, or grassy land. (See the engine manual provided with this
equipment to determine if the engine is already equipped.) Make sure you comply
with applicable local, state, and federal codes.
•Keep a fire extinguisher rated “ABC” nearby. Keep it properly charged and be
familiar with its use.
5. Firm, level,
heat-resistant
surface with
nearby water
supply
The pressure washer should be positioned on a firm, level (less that 3-degree slope),
heat-resistant surface with good drainage and a nearby water supply.
The pressure washer should be placed within garden hose distance of a continuous water
supply. Ensure that the pressure washer sits level and will not slide or shift during
operation. If applicable, block the pressure washer’s wheels to prevent movement.
Surface should be heat resistant if you will be using the burner for heated spray.

Operation
20
After you have checked and fueled the equipment and positioned it in a suitable worksite, it is time to
start your pressure washer. The following are the procedures necessary for safe, successful operation
of your pressure washer.
WARNING
Carefully read and make sure you understand all instructions and safety
information before using the pressure washer. Improper use of the pressure washer can
result in serious injury or death to the operator or bystanders from:
•Carbon monoxide
poisoning
•Fire/explosion
•Chemical
exposure
•Skin/eye injury from high
pressure spray
•Burns
•Slips/falls
•Electric shock
•Flying
objects/debris
OPERATING INSTRUCTIONS
STEP 1. CONNECT HOSES, WATER SUPPLY, AND SPRAY NOZZLE
STEP 2. SET UP FOR CHEMICAL SPRAY (IF DESIRED)
STEP 3. SPRAYING
STEP 4. STOPPING
Each of these procedures is discussed in detail below:
STEP 1. CONNECT HOSES, WATER SUPPLY, AND SPRAY NOZZLE
Position
pressure
washer for use
Place pressure washer in a suitable location for use, as directed in the “Before Each
Use, Step 3: Select Suitable Worksite” section of this manual. A suitable location is:
•OUTDOORS only, away from all building air intakes.
•Where no flammable vapors, dusts, and gases are present.
•Where there is adequate, unobstructed ventilation airflow.
•With adequate clearance from combustible materials.
•On a firm, level, heat-resistant surface with good drainage and
nearby access to a continuous water supply.
DANGER: Carbon monoxide poisoning hazard
Exhaust fumes from both the engine and the burner contain carbon
monoxide (CO), a poisonous gas you cannot see, smell, or taste. The CO
generated by the pressure washer can rapidly accumulate, even in areas that
appear to be well ventilated, resulting in dangerous and fatal concentrations
within minutes. ONLY run pressure washer OUTDOORS and at least 20
feet from the home, away from windows, vents and air intakes, to allow
proper ventilation. If you start to feel sick, dizzy, or weak while using the
pressure washer, shut off the engine and get to fresh air RIGHT AWAY.
NEVER run pressure washer inside any enclosed or semi-enclosed spaces,
including homes, garages, basements, sheds, boxes, pick-up truck beds,
RVs, or boats. These spaces can trap poisonous gases, EVEN if you run a
fan or open windows.