North Star M157310AC.1 User manual

1
M157310AC.1
Owner's Manual
Instructions for Set-up, Operation, Maintenance & Storage
HOT WATER/STEAM PRESSURE WASHER –3000 PSI /4GPM
Portable Outdoor-Use Only
This pressure washer produces both cold and hot water high pressure spray as well as steam spray. 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 kerosene/fuel-oil fired, open flame 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/Falls
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: 157310
SERIAL NUMBER: _____________

Hazard Signal Word Definitions
2
This is the safety alert symbol. It is used to alert you to potential personal
injury hazards. Obey all safety messages that follow this symbol to avoid
possible injury or death.
DANGER (red) indicates a hazardous situation, which if not avoided, will
result in death or serious injury.
WARNING (orange) indicates a hazardous situation, which if not avoided,
could result in death or serious injury.
CAUTION (yellow), used with the safety alert symbol, indicates a hazardous
situation, which if not avoided, could result in minor or moderate injury.
CAUTION (yellow), without the safety alert symbol, is used to address
practices not related to personal injury.
NOTICE is used to address practices not related to personal injury.
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.
Check Pump
Oil
Pump is shipped with oil. 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
battery 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 high-pressure
use. Use soap adjustment knob to regulate cleaning power.
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 clean if needed.
Electrodes:
Inspect electrodes annually and clean/adjust as needed.
DANGER
WARNING
CAUTION
CAUTION
NOTICE

Table of Contents
3
About Your Pressure Washer................................................................................................................4
Specifications...........................................................................................................................................5
Component Identification.......................................................................................................................6
Safety Labeling........................................................................................................................................7
Special Equipment Safety Features.......................................................................................................8
Assembly and Initial Set-Up...................................................................................................................9
Step 1. Unpacking & Delivery Inspection ....................................................................................9
Step 2. Assembly...........................................................................................................................11
Step 3. Initial Pump & Engine Preparation...................................................................................12
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............................................................................................................................25
Step 4. Stopping............................................................................................................................31
Storage......................................................................................................................................................31
Burner Adjustment.................................................................................................................................34
Maintenance and Repair ........................................................................................................................36
Troubleshooting ......................................................................................................................................45
Parts Explosion........................................................................................................................................46
Wiring Diagrams.....................................................................................................................................49
Summary of Important Safety Information.........................................................................................50
Limited Warranty...................................................................................................................................54

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 steam spray or water spray (heated or unheated) –up to 4 gallons per
minute at 3000 psi.
2) Incorporate cleaning chemicals into a low-pressure water spray.
The pump requires a clean, standard tap water supply provided through a garden hose at a flow rate of at least 4.8
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 kerosene/fuel-
oil fired, spark-ignited, open flame burner. Normal operation of this equipment will require you to supply:
Gasoline fuel and lubrication oil for the engine
Fuel for the burner (kerosene, diesel, 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 "Installation & Initial Set-up" 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. Keep this
owner's manual with the pressure washer at all times 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 #
157310
FLOW OUTPUT
Pressure Rating
3000 psi
Flow Rate
4 gpm
Maximum Temperature
250F
DIMENSIONS / COMPONENTS
Length
64"
Width
33"
Height
44"
Weight
557 lbs. –dry
710 lbs. –fueled
Pump Type
CAT 66DX
Engine Horsepower
390cc
Engine and Burner Fuel Tank Sizes
8.75 gallon
High Pressure Discharge Hose
3/8" x 50'
Chemical Injector
Maximum dilution ratio 13-to-1
SUPPLIES REQUIRED (not included)
Engine Fuel
Regular, Unleaded Gasoline
Engine Oil
See Engine Owner's Manual
Burner Fuel
#1 or #2 Diesel, B5 or lower Biodiesel, Kerosene, or
Fuel Oil
Pump Oil
(shipped with oil, but refills required)
SAE 30 non-detergent oil
Battery
12 Volt, minimum 18 Amp/Hr.
Lawn and Garden Battery (Group U1)
Input Water Supply
Standard tap water @ 20-75 psi, delivered @ 4.8 gpm
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.)

Component Identification
6
Ref #
Description
Ref #
Description
1
Exhaust Vent
9
Control Panel
2
Pump
10
Engine
3
Battery Box
11
Burner
4
Fuel Filter/Water Separator
12
High Pressure Water Outlet
5
Gas Cap
13
Engine on/off key switch
6
Gas Tank
14
Pump Oil Sight Glass
7
Fuel Cap
15
Hose Hook
8
Fuel Tank
16
Gun Hook
REFERENCE GUIDE
1. Exhaust Vent
Provides an out for burner exhaust gases.
2. Pump
A device that moves fluid through a combination of suction and displacement.
3. Battery Box
Storage place to house the battery.
4. Fuel Filter / Water Separator
Filter in fuel line that removes water and screens out dirt and debris from fuel.
5. Gas Cap
Cover for gas tank.
6. Gas Tank
Gas storage container.
7. Fuel Cap
Cover for fuel tank.
8. Fuel Tank
Fuel storage container.
9. Control Panel
Flat surface for mounting switches.
10. Engine
The air-cooled engine powers the pump.
11. Burner
A device used to efficiently convert fuel oil or gas into heat energy.
12. High Pressure Outlet
A passage for water to exit pump/heat exchanger and enter the hose.
13. Engine on /off key switch
The engine key is located on the engine. Always locate this switch and be
familiar with its location before operating the pressure washer.

Safety Labeling
7
5.)
IMPORTANT!
TURN HEAT SWITCH TO OFF POSITION
WHEN NOT IN USE.
fig05420
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#
On-Product Warning Labels
Part #'s
Description
1
782325
Danger & Warning
2
305410
Caution Hot
3
778464
Control panel
4
782397
Battery Hazard
5
786635
Burn Hazard
6
786837
Fuel Fill Warning
NEVER use inside any building, structure or
garage, EVEN IF doors and windows are open.
DANGER
WARNING
FOR OUTDOOR USE ONLY! Using this pressure washer indoors CAN KILL YOU IN MINUTES.
Engine exhaust and burner exhaust contain carbon monoxide. This is a poison you cannot
see or smell.
High pressure spray can cause injection injury, eye injury, and
loss of balance. Hot discharge fluid and hot surfaces can burn.
NEVER direct discharge stream at or near any person. Do not
allow any part of the body to come in contact with the fluid stream.
Gun kicks back - hold with two hands. Keep good footing and
balance at all times.
Surfaces of engine, burner, and wand can become very hot. Use
only designated gripping area of wand. Avoid contact with hot
engine and burner.
Spraying flammables can cause explosion. Fuel is flammable
and explosive. Exhaust can ignite combustible materials.
NEVER spray flammable liquids. Operate only where open flame
or torch is permitted.
NEVER fuel a running or hot engine or oil burner.
Ensure there are no fuel leaks before starting. Keep sources of
sparks and flames away.
Use approved container only for transferring fuel. Clean up fuel
spills immediately.
Keep engine and burner exhaust at least 7 feet from all
combustible objects. Situate on heat-resistant flooring when
using burner.
Understand all safety hazards and first aid measures for chemicals
being used.
Follow chemical manufacturer's directions when handling and
cleaning with chemicals. Wear safety gear as directed.
Keep spray away from electrical wiring, or electric shock /
electrocution could occur.
CAUTION: To Reduce Risk of Injury, Read Operating Instructions Carefully Before Using.
782325
Chemical Exposure Hazard
Electric Shock Hazard
Only use OUTSIDE and far away from
windows, doors, and vents.
Fire / Explosion Hazard
High Pressure Fluid Forces / Burn Hazards
ALWAYS use eye protection. Caustic acid and explosive
gases can cause blindness or severe burns.
NO smoking, sparks, or flames.
NEVER touch both battery terminals at the same time with your
hand or any non-insulated tools.
FLUSH immediately with water if battery acid contacts eyes,
skin, or clothing.
CONNECT cables in correct sequence: FIRST RED to POSITIVE
terminal, then BLACK to NEGATIVE terminal. When disconnecting,
DISCONNECT BLACK cable first, then RED.
NEVER charge a visibly damaged or frozen battery. ALWAYS
read and follow charger instructions.
BATTERIES:
1) contain caustic acid, 2) emit explosive gases,
3) can cause electric shock
WARNING - BATTERY HAZARDS
782397
1.)
2.)
3.)
4.)
6.)

Special Equipment Safety Features
8
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. The device will no longer
function properly. See a dealer or call Product Support at 1-800-270-
0810.
This unit is equipped with a high
pressure safety device, which acts
as a backup safety feature. If the
unloader malfunctions, the high
pressure safety device will open
and relieve excess system
pressure.
High
Temperature
Limit /
Thermostat
This unit is equipped with a high temperature limit that measures discharge
spray temperature and automatically turns the burner off when the
temperature setting is reached. When the discharge spray 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 inlet filter.
Spray Gun Safety
Latch
The spray gun is equipped with a
built-in trigger safety latch to guard
against accidental trigger actuation.
00417
Safety Latch
Thermal
relief valve
High Pressure
Safety Device
High temp limit
Note: Shield not
shown for clarity

Assembly and Initial Set-Up
9
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 in the below:
Step 1. Unpacking & Delivery Inspection
Find and separate the components identified in Figure 2- Overview of Pressure Washer
Components and Figure 3- 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.
Figure 2

Assembly and Initial Set-Up
10
Figure 3
Honda Manual
Qty: 1
Nozzle
Qty 6
Owner’s Manual
Qty: 1
Wheel Retainer
QTY 4
Grommet
Qty 6
5/16” Nut
QTY 2
5/16” Washer
QTY 8
5/16” x 2 ½ Bolt
QTY: 2
4 ft. Braided Hose
Strainer
QTY: 1
Hose Hook
QTY 1
M8 Nylock Nut
QTY 2

Assembly and Initial Set-Up
11
Step 2. Assembly
You must assemble your pressure washer before it can be used. See below:
Step 1. Fasten handles to frame with 5/16" x 2 1/2" bolts, 5/16" nuts and 2x 5/16" washers.
Step 2. Press chemical injector onto one end of the braided hose. Press strainer onto other end
of the braided hose.
Step 3. Install grommets and nozzles into holes in frame.
Step 4. Install wheels:
WARNING: The pressure washer is heavy. It can crush and cause
serious injury if it rolls out of control or tips over. Always use at least two
people or a mechanical assist to lift the unit while a third person slides the
wheels onto the axles.
Lift back of unit by handles to install rear
wheels, then lift front of unit to install front
wheels.
Fasten wheel with retainer, secure retainer
with wrench provided.
NOTE: It is recommended that two people lift
this unit while a third slides the wheels onto
the axles.
Press braided hose onto
injector and strainer
Fasten handle to frame
with 5/16" x 2 1/2" Bolts,
5/16" Nuts and 5/16"
Washers
Install grommets and
nozzles into holes on
frame.
Fasten hose hook and
handle to frame with M8
nylock nut and 5/16"
washers

Assembly and Initial Set-Up
12
a. Rear Wheels
Have two people lift the back of the pressure washer by the handles while a third person
slides the wheels onto the Rear Axle. Fasten each wheel with a wheel retainer using a
hex wrench.
b. Front Wheels
Have two people lift the front of the pressure washer while a third person slides the
wheels onto the Front Axle. Fasten each wheel with a wheel retainer using a hex
wrench.
Step 5. Use a mechanical assist or two people to lift the assembled pressure washer off of the
pallet.
Step 3. Initial Pump & Engine Preparation
Prepare
Water Pump
Verify pump oil level.
Note: The pump is shipped with oil.
1. Verify oil level:
a. Remove shipping tape and black vent plug (if present) from oil fill
cap.
b. Verify that oil level is half way up the sight glass.
1. If oil level is low, fill using SAE30 non-detergent oil or Cat Pump Oil Item
#22158.
2. Replace oil fill cap.
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.
Figure 5
Oil Fill Cap
Drain Plug
Sight Glass

Assembly and Initial Set-Up
13
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.

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
Moving your
pressure
washer around
1. Use the handle to manually move the pressure washer.
2. To turn, lift slightly on the handle and pivot the pressure washer on its front
wheels.
3. Engage brakes to prevent inadvertent movement. Pull brake arms out, rotate
them down, and use them as chocks. (See Figure 7)
Elevating or
lowering your
pressure
washer
To reduce risk of injury, use a hoist or shallow ramp to raise or lower the
pressure washer. When using a hoist, lift from the lifting points. (See Figure 7).
Figure 7
Breaks
Lift Here
Handles

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 half way up the sight glass.
2. If oil level is low, fill using SAE30 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 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 possibly 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.

Before Each Use
16
1) Check hoses, fittings, wand, trigger gun and connections for signs of wear,
cracks, looseness, or leaks. Replace as required.
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.

Before Each Use
17
Note: A running or still-hot engine or burner is hot enough to ignite fuel.
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 a 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.
1) Remove burner 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.

Before Each Use
19
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.
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,