North Star M157593E User manual

M157593E
Owner's Manual
Instructions for Set-up, Operation, Maintenance & Storage
TRAILER MOUNTED,HOT WATER PRESSURE WASHER –4000 PSI /4GPM
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 diesel
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 tipover
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: 157593
SERIAL NUMBER: _____________
®

Hazard Signal Word Definitions
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 the burner will not fire unless a battery is
installed. Purchase a standard 12VDC, 18 Ah lawn and garden battery (Group U1-7).
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.
Engine:
See Engine Owner's manual.
Maintenance
Schedule
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.

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. Trailer Assembly....................................................................................... 12
Step 3. Initial Pump & Engine Preparation............................................................ 14
Step 4. Battery Installation..................................................................................... 15
Moving and Towing ........................................................................................................ 16
Before Each Use ............................................................................................................... 18
Step 1. Check Equipment....................................................................................... 18
Step 2. Add Fuel(s) ................................................................................................ 19
Step 3. Select a Suitable Worksite ......................................................................... 21
Operation.......................................................................................................................... 23
Step 1. Connect Hose(s), Water Supply, and Spray Nozzle(s).............................. 23
Step 2. Set Up for Chemical Spray (if desired)...................................................... 27
Step 3. Spraying..................................................................................................... 29
Step 4. Stopping..................................................................................................... 35
Storage............................................................................................................................... 36
Burner Adjustment ......................................................................................................... 39
Maintenance and Repair ................................................................................................ 41
Troubleshooting ............................................................................................................... 50
Parts Explosion ................................................................................................................ 51
Wiring Diagram .............................................................................................................. 55
Summary of Important Safety Information ................................................................. 56
Limited Warranty ........................................................................................................... 61

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 4 gallons per minute at 4000 psi).
2) Incorporate cleaning chemicals into a low-pressure water spray.
Water is supplied via the pressure washer's water tank or via standard tap water through a garden hose. In either
case, the water supply must have a flow rate of at least 4.8 gallons per minute. If using tap water, 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 pressure washer is trailer mounted and towable.
The pump is powered by a diesel-fueled engine. The spray water is heated (when desired) by a diesel fired,
spark-ignited, open flame burner. Normal operation of this equipment will require you to supply:
Diesel fuel and lubrication oil for the engine
A 12-volt standard lawn and garden battery
See the "Specifications" section of this manual for more detail.
Engine 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 #
157593
FLOW OUTPUT
Pressure Rating
4000 psi
Flow Rate
4 gpm
Maximum Temperature
210F
DIMENSIONS / COMPONENTS
Length
142"
Width
76"
Height
61"
Weight
1460lbs. –dry
3400lbs. –water tank full
Pump Type
NorthStar NSRW4540
Engine Horsepower
18.8 HP
High Pressure Discharge Hose
3/8" x 150'
Chemical Injector
Maximum dilution ratio 13-to-1
Trailer GVWR
3500 lbs.
Hitch Ball Size
2"
SUPPLIES REQUIRED (not included)
Engine Fuel/Burner Fuel
#1 or #2 Diesel
(Capacity: 13 Gal.)
Engine Oil
See Engine Owner's Manual
Pump Oil
(shipped with oil, but refills required)
25 Oz. Oil Capacity
SAE 30 non-detergent oil, or Universal Tractor
Transmission Oil
Battery
12 Volt, minimum 55 Amp/Hr.
Input Water Supply
Tap: Standard tap water @ 20-75 psi
Water feed tank (included): Flow rate must be maintained
at 4.8 gpm
Input Water Supply Hose
For Tap: Standard garden hose with inside diameter at
least 5/8"
(at least 3/4" diameter if hose longer than 100 ft.)
For Tank: Hose and fittings included with tank.

Component Identification
6
Ref #
Description
Ref #
Description
Ref #
Description
1
Pressure Relief Valve
10
Ball Valve (city tap water)
18
Pressure Switch
2
Unloader
11
Engine Key Switch
19
Water Outlet
3
Inlet Plumbing
12
Water Inlet (city tap water)
(trailer models use hose reel)
20
Heat Switch
4
Pump
21
Thermostat
5
Belt Guard
13
Throttle Control
22
Indicator Light (Power)
6
Engine (see engine
manual)
14
Fuel Pump Purge
23
Indicator Light
(Thermostat)
7
Ball Valve (feed tank)
15
Control Panel
24
Indicator Light (Flow)
8
Water Inlet (feed tank)
16
Diesel Tank
9
Water Filter
17
Battery Box (battery not
included)

Component Identification
7
REFERENCE GUIDE
1. Pressure Relief Valve
Valve that opens to relief pressure in the event of system over
pressurization.
2. Unloader
Valve that regulates pressure and directs flow into bypass
when trigger is closed.
3. Inlet Plumbing
Means of connecting garden hose to pump inlet.
4. Pump
A device that moves fluid through a combination of suction
and displacement.
5. Belt Guard
Guards against accidental contact with moving parts.
6. Engine
The air-cooled engine powers the pump.
7. Ball Valve (feed tank)
Used to open or close the water line from feed tank.
8. Water Inlet (feed tank)
Used to connect water from the feed tank to the inlet
plumbing.
9. Water Filter
Filters water prior to entering the pump.
10. Ball Valve (city tap water)
Used to open or close the water line from city tap.
11. Engine Key Switch
Start engine by turning clockwise.
12. Water Inlet ( city tap water )
Used to connect city tap water to the inlet plumbing.
13. Throttle Control
Changes engine speed.
14. Control Panel
Flat surface for mounting switches.
15. Fuel Pump Purge
Removes air from fuel system pump until engine starts, and
continues to operate.
16. Diesel Tank
Fuel storage container.
17. Battery Box
Storage place to house the battery.
18. Pressure Switch
Controls burner.
19. Water Outlet
Connect high pressure hose here.
20. Heat Switch
On/off device for power to burner components.
21. Thermostat
Adjust the water temperature.
22. Indicator Light (power)
Instrument used to monitor unit operation. Should illuminate
when the power switch is in the ON position.
23. Indicator Light (thermostat)
Instrument used to monitor unit operation. Should be
illuminated when the gun is in use and the burner is firing.
24. Indicator Light (flow)
Instrument used to monitor unit operation. Illuminates if water
is flowing through the spray gun.

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.
On-Product Warning Labels
Part numbers
Description
Part numbers
Description
305410
Caution Hot
786633
Towing Warning
782325
Danger & Warning
786635
Burn Hazard
782397
Battery Hazard
777778
Moving/Towing
786632
Rotating Machinery
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
NEVER use inside any building, structure or
garage, EVEN IF doors and windowsare 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 contactwith 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 engineor 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











MOVING/TOWING INSTRUCTIONS
Moving trailer by hand:
-Attach caster wheel to
jack.
-Crank jack down.
-Do not attempt to move
trailer up or down slope
by hand.
Towing trailer:
-Latch coupler securely to class 3 or higher
hitch with 2" ball.
-Make sure hitched trailer sits level.
-Crank jack to UP position and remove
caster wheel.
-Attach safety chains to the tow vehicle.
-Check local, state and federal requirements
before towing on public roads.

Special Equipment Safety Features
9
High Pressure
Relief Valve
WARNING-If the high-pressure relief valve ever discharges water,
turn the engine off and do not use the machine. The valve 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 relief valve, which acts as a backup
safety feature. If the unloader malfunctions, the high-pressure relief valve
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.
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.
00417
Safety Latch
FIG02330
FIG02329
High Pressure
Relief Valve

Assembly and Initial Set-Up
10
Steps for Assembly / Initial Set-Up
Step 1. Unpacking & Delivery Inspection
Step 2. Trailer 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 power washer immediately after you
receive delivery for missing parts and damage.
If you have missing components, contact Product Support at 1-800-270-0810.
If you have damaged components, contact the freight company that delivered the unit and file
a claim.
Figure 2 –Overview of Pressure Washer Components
Coupler
Qty-1
Safety Chains
Qty-2
Truck Chest
Qty-1
Manual Bag
Qty-1
Jack
Qty-1
Caster Wheel
Qty-1
Crated Pressure Washer
Qty-1
Jack Plate
Qty-1

Assembly and Initial Set-Up
11
Figure 3 –Hardware Bag contents
5/16 Flat Washer
Qty-8
Part # 82099
1/2” Flat Washer
Qty-2
Part # 82122
1/2” Class G Nut
Qty-3
Part # 82291
1/2 x 5” Bolt
Qty-1
Part # 82119
1/2 x 4” Bolt
Qty-2
Part # 82250
5/8 x 1-1/2” Bolt
Qty-4
Part # 82251
5/8” Class G Nut
Qty-4
Part # 82288
3/8 x 1” Bolt
Qty-3
Part # 82023
3/8” Flat Washer
Qty-3
Part # 82028
3/8” Lock Nut
Qty-3
Part # 82027
5/16 x 1” Bolt
Qty-4
Part # 82016
5/16” Lock Nut
Qty-4
Part # 82020
Suction Hose Assembly
Qty-1
Part # 221222 and 777165
5/8” Flat Washer
Qty-4
Part # 82286

Assembly and Initial Set-Up
12
Step 2. Trailer Assembly
WARNING: The pressure washer is heavy. It can crush and cause serious injury if it rolls out
of control or tips over. Follow all assembly instructions exactly as presented below.
1.) Remove the top and four sides of the
steel crate.
2.) Remove A-frame from trailer frame.
(Keep fasteners for step 7)
3.) Slide A-frame into holders under trailer
frame (built into the front posts).
4.) Install jack onto A-frame with 3/8x1"
bolts, 3/8" lock nuts, and washers
provided. Tighten to 37 ft.-lbs.
5.) Slide caster wheel onto jack and secure
with pin.
6.) Crank jack down until A-frame becomes
level (parallel to ground).
7.) Attach A-frame to trailer frame with six
5/8" bolts, Class G nuts and washers.
Tighten to 180 ft.-lbs. Use a torque
wrench.
8.) Check trailer light wire routing though
A-frame, make sure wires are not
pinched, stretched, or pass any rough
edges.
9.) Crank jack down farther (so A-frame
goes up) to take weight off front
shipping posts.
10.) Remove front shipping posts.
11.) Crank jack up as far as it will go
(so A-frame goes down and weight is
applied to wheels)
12.) Disconnect rear shipping posts from
frame (remove only the bolts at the top
of the rear shipping posts)
13.) Roll trailer forward until it is free of the
rear shipping posts.
Front Shipping
Posts
Rear Shipping Posts
(one on each corner)
A-frame
Caster
wheel
Jack
Trailer
Frame
Front post

Assembly and Initial Set-Up
13
Step 2. Trailer Assembly (continued)
14.) Attach coupler to a-frame with two
1/2x4" bolts and Class G lock nuts.
Tighten each bolt to 90ft.-lbs. Use a
torque wrench.
15.) Attach safety cables to the a-frame with
1/2" x 5" bolt and Class G lock nut.
Place a flat washer next to the head of the
bolt, slide the bolt through the cable and
the A-frame. Then slide the other cable
onto the bolt, followed by another washer
then the lock nut. Tighten to 37ft.-lbs.
16.)Attach truck chest to A-frame with four
5/16 x 1" bolts, lock nuts, and washers.
Place a flat washer onto the bolt, then
insert bolts down though holes in truck
chest and A-frame. Place washers under
wall of a-frame and fasten with lock nuts.
Tighten each bolt to 20ft.-lbs.
Truck chest
Coupler
Safety Cables
1/2” x 5” Bolt
Tow Bar
Tube
Safety Cable
Flat Washer
Class G Lock Nut
Flat Washer
Safety Cable
5/16" x1” bolt
Truck chest
A-frame
Lock Nut
Flat Washer
Flat Washer

Assembly and Initial Set-Up
14
Step 3. Initial Pump & Engine 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 the type of pump oil specified below:
(See "Specifications" section of this manual to determine the type of pump
that came equipped with this pressure washer.)
a. For Comet or NorthStar pumps: Use Universal Tractor
Transmission Oil or Non-detergent 30 weight oil.
3. Replace 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 drain plug
Sight glass
Oil fill

Assembly and Initial Set-Up
15
Step 4. Battery Installation
Install a 12-volt battery (Group 22NF) with a minimum 55 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. 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
16
WARNING
The filled pressures 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.
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.
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 500 lbs.
Ensure the towing vehicle is properly equipped to handle the load.
1. Attach trailer coupler to vehicle's class 3 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
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. An optional locking pin or padlock may be inserted in the locking lever
hole for extra security.

Moving and Towing
17
Attach safety
cables
Two safety cables must be used while towing.
Cross safety cables under the coupler, allowing only enough slack for vehicle
turns.
Plug in lights
Plug light 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
18
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 the type of oil specified below:
(See "Specifications" section of this manual to determine the type of pump
that came equipped with this pressure washer.)
a. For Comet or NorthStar pumps: Use Universal Tractor
Transmission Oil, or SAE 30 non-detergent oil.
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 pressure shutdown feature prevents the engine from starting or
running 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.

Before Each Use
19
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.
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
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, or
damaged fuel tank
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
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
20
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 and
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 fuel 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 fuel
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 fuel tank
Check the fuel tank level. If needed, fill tank with fresh #1 or #2 diesel, from
a portable container:
1) Remove fuel cap.
2) Add fuel through the fill opening:
- Use only a UL-approved portable container to transfer the fuel to engine's
tank.
- 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 gas cap securely before starting engine.
4) Wipe any excess fuel from unit before starting