North Star M157597BF User manual

M157597BF
Owner's Manual
Instructions for Set-up, Operation, Maintenance & Storage
TRAILER MOUNTED,2-GUN HOT WATER PRESSURE WASHER
–4000 PSI /7GPM
Portable Outdoor-Use Only
This pressure washer produces both cold and hot water high pressure 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.
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.
Trailer tip over
•Sudden stopping or turning while towing the pressure washer with a
filled water tank can result in driving instability and/or trailer tip over.
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: 157597
SERIAL NUMBER: _____________

Hazard Signal Word Definitions
2
Hazard Signal Word Definitions
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. Check pump oil level before starting.
Battery
Required
A battery is not included. The engine will not run and burner will not fire unless a battery is
installed. Purchase a standard, top post mount 12VDC, 18 Ah automotive battery (Group 75/86).
Electric Brakes
An electric brake controller is required. Brake controllers are available from Northern Tool &
Equipment. Call Product Support 1-800-270-0810.
Water Flow
Requirements
Water supply is tank fed. Make sure the supply water flow rate is always 20% higher than the
pressure washer's flow rate (see "Specifications" and "Assembly/Initial Set-Up" sections 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.
•Check mounting bolts regularly for proper torque.
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.
Electrodes:
•Inspect electrodes annually and clean/adjust as needed
Belts:
•Check belt tension after first 24 hours of use, then routinely with
each oil change. Tighten or change belts as needed.
Brakes:
•Check belt tension after first 24 hours of use, then routinely with each
oil change. Tighten or change belts as needed.
DANGER
WARNING
CAUTION
CAUTION
NOTICE

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. Gun and Nozzle Storage Set-Up ................................................................................................12
Step 3. Initial Pump, Engine & High Pressure Hose Preparation ...........................................................12
Step 4. Battery Installation ......................................................................................................................13
Moving and Towing ..................................................................................................................................14
Before Each Use .........................................................................................................................................17
Step 1. Check Equipment ........................................................................................................................17
Step 2. Add Fuel(s)..................................................................................................................................18
Step 3. Select a Suitable Worksite ..........................................................................................................20
Operation ....................................................................................................................................................22
Step 1. Connect Hose(s), Water Supply, and Spray Nozzle(s) ...............................................................22
Step 2. Set Up for Chemical Spray (if desired).......................................................................................25
Step 3. Spraying ......................................................................................................................................27
Step 4. Stopping ......................................................................................................................................33
Storage.........................................................................................................................................................34
Burner Adjustment ...................................................................................................................................37
Maintenance and Repair ..........................................................................................................................39
Troubleshooting .........................................................................................................................................51
Parts Explosion...........................................................................................................................................52
Pump Explosion..........................................................................................................................................57
Wiring Diagram .........................................................................................................................................59
Summary of Important Safety Information ............................................................................................60
Limited Warranty .....................................................................................................................................65
California Proposition 65 Information.....................................................................................................66

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 spray of heated or unheated water (up to 7 gallons per minute at 4000 psi). The
pressure washer may be operated in either dual- or single-gun mode.
2) Incorporate cleaning chemicals into a low-pressure water spray.
The pump requires a clean, tank-fed water supply at a flow rate of at least 8.4 gallons per minute. (Tank is
included.) Any cleaning chemicals that are used must be specifically approved for use in pressure washers.
The pressure washer is trailer mounted and towable. The trailer is equipped with electric brakes -- an electric
brake controller is required and must be supplied by the customer. Brake controllers are available from Northern
Tool & Equipment. Call NorthStar Product Support 1-800-270-0810.
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
•Pump oil
•Fuel for the burner (kerosene, diesel, or fuel oil)
•A 12-volt top post mount automotive 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 #
157597
FLOW OUTPUT
Pressure Rating
4000 psi
Flow Rate
7 gpm
Maximum Temperature
200F
DIMENSIONS / COMPONENTS
Length
201.5"
Width
78"
Height
75"
Weight
2000 lbs. –dry
6550 lbs. –water tank full
Pump Type
NorthStar TWS 7040
Engine Horsepower
23.5 hp
High Pressure Discharge Hose
Two - 3/8" x 150'
Chemical Injector
Maximum dilution ratio 15-to-1
Trailer GVWR
7000 lbs.
Hitch Ball Size
2"
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
(Capacity: 15 Gal.)
Pump Oil
(shipped with oil, but refills required)
Universal Tractor Transmission Oil or SAE
Non-detergent 30wt. oil
Battery
12 Volt, minimum 18 Amp/Hr.
Standard top post mount automotive
(Group 75/86)
Input Water Supply
Water feed tank (included):
Flow rate must be maintained at 8.4 gpm

Component Identification
6
Ref #
Description
Ref #
Description
1
Indicator light (Power)
11
Flow Switch
2
Indicator light (Flow)
12
Unloader
4
Indicator light (Thermostat)
13
Water Outlet
5
Thermostat
14
Engine (see engine manual)
6
Heat Switch
15
Engine Key Switch
7
Control Panel
16
Pump
8
Gasoline Tank
17
Water Inlet
9
Water/Fuel Separator
18
Fuel oil/Kerosene/Diesel Tank
10
Battery box
19
Heat Exchanger
THERM.
POWER
OFF
HEAT
SW.
HEAT
SW.
ON
THERMOSTAT INDICATOR LIGHTS
FLOW

Component Identification
7
REFERENCE GUIDE
1. Indicator Light (Power)
Instrument used to monitor unit operation. Should
illuminate when the power switch is in the ON position.
2. Indicator Light (flow)
Instrument used to monitor unit operation. Illuminates if
water is flowing through the spray gun.
4. Indicator Light (Thermostat)
Instrument used to monitor unit operation. Should be
illuminated when the gun is in use and the burner is firing.
5. Thermostat
Adjust the water temperature.
6. Heat Switch
On/off device for power to burner components.
7. Control Panel
Flat surface for mounting switches.
8. Gasoline Tank
Fuel storage container.
9. Water/Fuel Separator
Used to remove contaminant water from gasoline or diesel
fuel to prevent water in the fuel from reaching the engine.
10. Battery Box
Storage place to house the battery.
11. Flow Switch
A device that monitors flow.
12. Unloader
Valve that regulates pressure and directs flow into bypass
when trigger is closed.
13. Water Outlet
Connect high pressure hose here.
14. Engine
The air-cooled engine powers the pump.
15. Engine Key Switch
Start engine by turning clockwise.
16. Pump
A device that moves fluid through a combination of suction
and displacement.
17. Water Inlet
Used to connect water from the feed tank to the inlet
plumbing.
18. Fuel Oil/Kerosene/Diesel Tank
Fuel storage container.
19. Heat Exchanger
Device that heats the water by forcing a flame across steel
pipe.

Special Equipment Safety Features
8
On-Product Warning Labels
Ref#
Part #
Description
1
786632
Rotating Equipment Warning
2
786739
Operating Instructions/Warning
3
786635
Burn Hazard Decal
4
782325
Danger and Warning Decal
5
782397
Battery Warning Decal
6
779695
Moving Big Units
7
786633
Tow Warning
8
792538
Breakaway Switch Warning
9
798057
Rupture Disk Warning
32821
Lanyard
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.
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
MOVING/TOWING INSTRUCTIONS
Towing trailer:
-Latch coupler securely to class 4 or higher hitch with 2" ball.
-Make sure hitched trailer sits level.
-Crank jack to UP position.
-Attach safety cables to the tow vehicle.
-Connect breakaway switch cable.
-Plug in 7-way connector into tow vehicle.
-Check local, state and federal requirements before towing
on public roads.
1
2
3
4
5
6
7
8
9

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. 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
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.
Spray Gun Safety
Latch
The spray gun is equipped with a built-in trigger safety latch to guard against
accidental trigger actuation.
High pressure
safety device
High temperature
limit
00417
Safety Latch

Assembly and Initial Set-Up
10
Steps for Assembly / Initial Set-Up
Step 1. Unpacking & Delivery Inspection
Step 2. Gun and Nozzle Storage Set-Up
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 Figure 2 –Overview of Pressure Washer
Components and Figure 3 –Hardware Bag. Inspect the power washer immediately after you
receive delivery for missing parts and damage.
•If you have missing or damaged components, please contact NorthStar Product Support at
1-800-270-0810.
Figure 2 –Overview of Pressure Washer Components
(2) Spray guns & lances
Pressure washer, tank, and trailer
(2) High pressure
hoses
Manual bag

Assembly and Initial Set-Up
11
Figure 3 –Hardware Bag contents
Qty (2) Engine Keys
Qty (2) #3.5 Nozzle 5 Packs
Part # 38532
#7.0 Nozzle 5 Pack
Part # 779544
Qty (16) Grommets
Part # 777111
Qty (2) Pin Catches
Part # 778498

Assembly and Initial Set-Up
12
Step 2. Gun and Nozzle Storage Set-Up
1. Guns. Store guns vertically on back of trailer using supplied pins. Rest guns with handle down
on the back of the trailer and pins will hold guns in place.
2. Nozzles. Insert grommets and nozzles (provided) into the hose reel guides.
Figure 4
Step 3. Initial Pump, Engine & High Pressure Hose Preparation
Prepare
Water Pump
Verify pump oil level.
Note: The pump is shipped with oil.
1. Verify that oil level is half
way up the sight glass (or at
the indicator line on the dip
stick).
2. If oil level is low, fill using
Universal Tractor
Transmission Oil or SAE
Non-detergent 30wt. oil.
3. 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.
Grommets
Nozzles
Insert holes
Figure 5
Oil fill cap
Sight glass

Assembly and Initial Set-Up
13
Prepare
High Psi
Hose on Hose
Reel
Completely unwrap / unwind the high pressure hose from the hose reel.
Note: New hose will “grow” when charged for the first time and should always be
charged one time before being wrapped on the reel.
Step 4. Battery Installation
Install a 12-volt standard, top-post mount, automotive battery (Group 75/86) with a minimum
18 amp-hour rating. The engine will not run and 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. The inside dimensions of the battery compartment are 11-
1/8"L x 7-3/4"W x 10-1/8"H.
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 Towing
14
WARNING
The filled pressure washer is heavy. It can crush and cause serious injury if it rolls out
of control or tips over.
•ALWAYS keep the jack cranked down to help balance the trailer when it is not
connected to a vehicle hitch.
•FOLLOW all the instructions below for safely connecting and towing the pressure
washer.
Connecting Trailer and Towing
Inspect trailer
Always inspect the trailer before hitching it to your vehicle.
1. Make sure tires are fully inflated and in good repair. See tire sidewall
for recommended pressure.
2. Check to make sure that trailer is in safe working condition. Make
sure all nuts, bolts, and connections are tight. If a part needs
replacement, only use parts that meet the manufacturer's
specifications.
3. Make sure you have performed regular maintenance on trailer brakes
to ensure they are in good working order.
WARNING:
•Do not over-inflate tires. Serious injury can occur if tire
explodes.
•Damaged or missing components, or replacement parts that
do not meet specifications, may result in a safety hazard or
poor operation of the trailer.
•Inadequately maintained brakes could result in brake failure
and loss of control of towing vehicle.
Move pressure
washer to vehicle
When moving the pressure washer by hand, always keep the jack cranked
down to provide support if needed.
Attach trailer to
hitch
Attach trailer to vehicle hitch.
When filled, the pressure washer trailer has a tongue weight of 400 lbs.
Ensure the towing vehicle is properly equipped to handle the load.
1. Attach trailer coupler to vehicle's class 4 or higher hitch with 2" ball
(only).
2. Ensure trailer is level, with A-frame tow bar parallel to the ground.
You may need to adjust your coupler height or purchase the proper
hitch to achieve the correct tongue height so trailer is level.
WARNING: Vehicle handling may be adversely affected
while towing if the trailer is not level.
3. Adjust coupler to ball by raising locking lever and turning lock nut

Moving and Towing
15
with fingers. Proper adjustment is obtained when coupler is as tight as
possible on ball and locking lever can still be opened and closed.
4. Lock lever closed to secure the attachment.
5. Insert safety pin.
Attach safety
cables
Two safety cables must be used while towing.
Cross safety cables under the coupler, allowing only enough slack for vehicle
turns.
Route breakaway
switch cable
Route breakaway switch cable.
The breakaway switch is a device that will activate the trailer brakes should
the trailer become disconnected from the tow vehicle. A cable is connected
to a pin inserted into the breakaway switch. You must route this cable so that
it will pull the pin out of the breakaway switch if the trailer begins to separate
from the tow vehicle, which in turn will activate the trailer brakes.
Figure 6
1. Pull the pin with its attached cable out of the breakaway switch. Note
the other end of the cable is a terminal loop.
2. Route the pin and its attached cable through the safety cable latch-
point on the tow vehicle, and then back through its own terminal loop.
3. Reinsert the pin into the breakaway switch.
IMPORTANT: Always keep the pin inserted in the breakaway switch, even
when not towing. Failure to have the pin inserted will drain your
pressure washer's battery. Never use the breakaway switch as a
parking brake.
*Note: An extra pin is attached to the lanyard.
Pin
Breakaway
switch
Lanyard
Safety cable
latch point

Moving and Towing
16
Plug in
lights/brake
Plug 7-way electrical pin connector into vehicle.
Raise the jack
Always crank the jack into the UP position before towing.
Tow
Tow the pressure washer to your desired work location.
When towing, always adhere to the following safety rules.
•Read vehicle instructions. Review towing safety instructions in your
towing vehicle manual.
•Driving skills. Special attention and driving skills are necessary for
towing any type of trailer.
•Vehicle handling. Be aware that vehicle handling will be affected when
towing the filled pressure washer. Exercise caution to avoid loss of
control or pressure washer overturning:
oKeep speed to a minimum so you can maintain control at all times.
Reduce speed prior to turns.
oAllow for wider turns and for more distance to stop.
oAvoid any sudden steering maneuvers, starts, or stops that could
create sway.
•Rough or sloped terrain. Slow down and exercise extra caution on
rough or sloped terrain in order to reduce risk of rollover. Pick the most
level route possible when transporting across fields. Drive up and down
slopes that cannot be avoided, rather than across. Use a vehicle equipped
with a Roll Over Protection System (ROPS) if you will be operating on
non-level terrain.
•Added length. Be aware of the added length of the pressure washer.
•Reduced visibility. Be aware that visibility may be reduced with
pressure washer attached. Be extra cautious when backing up or turning.
•Ride / transport. Never ride or transport cargo on the pressure washer.
•On public roads. If towing on a public road, make sure to comply with
all local, state, and federal towing requirements. It is the sole
responsibility of the purchaser to obtain licensing, trailer lights, safety
chains or signage as needed to comply.
•Under the influence. Never tow or operate this pressure washer while
under the influence of alcohol, drugs, or medication
If leaving
unattended
Turn off the vehicle and block the trailer wheels if leaving the pressure
washer unattended.

Before Each Use
17
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 (or at the
indicator line on the dip stick).
2. If oil level is low, fill using Universal Tractor Transmission Oil or SAE
Non-detergent 30wt. oil.
3. Replace oil 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
18
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

Before Each Use
19
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.
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.

Before Each Use
20
3) Replace fuel cap securely before starting engine.
4) Wipe any excess fuel from unit before starting
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 power 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 away from all building air intakes.
•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.