M157300E
Item Numbers: 157300,157301
157302
TM
Owner’s Manual
Pressure Washer: Machine that cleans dirty
surfaces with high pressure water.
WARNING
Read this manual.
Serious injury or death can result if safety instructions are not followed.
Pump is shipped with oil.
- Remove shipping tape from pump oil fill cap. (Cat Pumps)
- Remove shipping plug and install vented fill cap. (Comet Pumps)
- See pump oil cap section of this manual.
Closely inspect all components.
-If you have damaged components: Contact the freight company that
delivered the unit and file a claim.
-If you have missing components: Contact Customer Service at
1-800-270-0810.
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810
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Table of Contents
Important Safety Instructions……………………….... 4-5
Warning Label Locations……………………………... 6
Assembly Instructions……………………………………. 7-9
Machine Component Identification……………………… 10
Pump Oil Cap and Pump Component Identification….. 11
Operation Instructions……………………………….... 11-15
Water Supply……………………………………….... 11
Start-Up/Shut-Down Instructions………………….. 12
Spray Gun Safety Lock and Attaching the Lance.. 13
Installing Nozzles and Quick Connect hoses…….. 14
Applying Chemicals…………………………………. 15
Maintenance and Storage……………………………. 16-18
Maintenance Mode and Maintenance Schedule… 16
Pump Oil Change……………………………………. 17
Winter Storage………………………………………. 18
Troubleshooting…………………………………………… 19
Specifications……………………………………………… 20
Parts Explosions………………………………………….. 22
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Important Safety Instructions
WARNING
CAUTION
-Risk of Injection or Injury to Persons - Do Not Direct Discharge Stream at Persons. - Do
not use a hose if exterior damage is evident.
-Risk of explosion. - Do not spray flammable liquids. - Do not operate in a flammable
environment.
-Gun kicks back. Hold with both hands.
-To reduce the risk of injury, read operating instructions carefully before use.
WARNING - When using this product basic precautions should always be followed, including the following:
1.) Read all the instructions before using the product.
2.) To reduce the risk of injury, close supervision is necessary when the product is used near
children. Do not allow irresponsible use by children. Always stop the product and bleed
pressures before leaving unattended, disconnecting hoses or servicing the pump.
3.) Know how to stop the product and bleed pressures quickly. Be thoroughly familiar with the
controls.
4.) Stay alert - watch what you are doing.
5.) Do not operate the product when fatigued or under the influence of alcohol or drugs.
6.) Keep operating area clear of all persons.
7.) Do not overreach or stand on unstable support. Keep good footing and balance at all times.
Wear footwear capable of maintaining a good grip on wet surfaces - Do not place the machine
on soft or unstable ground.
8.) Follow the maintenance instructions specified in all manuals. Do not run machine without
sufficient lubrication or sufficient water to cool the pump.
9.) Wear safety glasses, gloves, face protection and appropriate clothing when operating the
machine.
10.) Do not operate this machine with broken or missing parts. - Never alter the manufacturer’s
original design or deactivate any safety device on the machine.
11.) Risk of exposure to dangerous chemicals. Wear protective gloves when handling and
cleaning with chemicals. Follow the chemical manufacturer’s directions. Understand all safety
hazards and first aid for all chemicals being used. Check whether dangerous chemicals have
been used and take any precautions that may have been recommended by the supplier of
these chemicals when cleaning filters. Do not pump highly abrasive fluids or use with
incompatible chemicals or solvents.
12.) Know the pressure and temperature limits of your machine. Be sure all high pressure
accessories meet or exceed your machine’s limits. Do not set the pressure relief valve above
the machine’s limit.
13.) Do not move this machine by pulling on the hose. Do not use the pump to support other items
of equipment that impose unacceptable loads on the pump. Do not attempt to use this machine
as a prop.
14.) To reduce risk of injury, do not secure the spray gun open. Your spray gun is equipped with a
built-in trigger safety latch to guard against accidental trigger release and potentially dangerous
high pressure spray. Rotate the safety latch to the locked position when not spraying.
15.) Do not clean this machine with its own spray. Cleaning should be done with a damp sponge
with the motor OFF.
16.) Always make sure all switches and controls are in the OFF position prior to plugging in the
electrical cord. Do no stand in water while plugging and unplugging electrical cord.
17.) This product is provided with a ground fault circuit interrupter built into the power cord plug. If
replacement of the plug or cord is needed, use only identical replacement parts.
SAVE THESE INSTRUCTIONS
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Grounding Instructions
This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least
resistance for electric current to reduce the risk of electrical shock. This product is equipped with a cord having
an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet
that is properly installed and grounded in accordance with all local codes and ordinances.
DANGER - Improper connection of the equipment - grounding conductor can result in a risk of electrocution.
Check with a qualified electrician or service personnel if you are in doubt as to whether the outlet is properly
grounded. Do not modify the plug provided with the product - if it will not fit the outlet, have a proper outlet
installed by a qualified electrician. Do not use any type adapter with this product.
1. For a product rated 125 volts or less:
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
This pressure washer is provided with a ground fault circuit interrupter (GFCI) built into the plug of the power
supply cord. This device provides additional protection from the risk of electric shock. Should replacement of
the plug or cord become necessary, use only identical replacement parts that include GFCI protection.
2. For a product rated more than 125 volts:
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
To comply with the National Electric Code (NFPA 70) and to provide additional protection from the risk of
electric shock, this pressure washer should only be connected to a receptacle that is protected by a ground
fault circuit interrupter (GFCI).
Extension Cords
Use only 3-wire extension cords that have 3 prong grounding-type plugs and 3-pole cord connectors that
accept the plug from the product. Use only extension cords that are intended for outdoor use. These extension
cords are identified by a marking “Acceptable for use with outdoor appliances; store indoors while not in use.”
Use only extension cords having an electrical rating not less than the rating of the product. Do not abuse
extension cord and do not yank on any cord to disconnect. Keep cord away from heat and sharp edges.
Always disconnect the extension cord from the receptacle before disconnecting the product from the extension
cord.
Warning - To reduce the risk of electrocution, keep all connections dry and off the ground. do not touch plug
with wet hands.
SAVE THESE INSTRUCTIONS
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Warning Label Locations
START-UP INSTRUCTIONS
1. Attach garden hose.
2. Attach pressure hose.
3. Attach gun and lance.
4. Turn water supply ON.
5. Squeeze trigger to
SHUT-DOWN INSTRUCTIONS
1. Turn motor OFF.
2. Unplug the power cord.
3. Turn water supply OFF.
4. Squeeze trigger to
relieve system pressure.
5. Remove garden hose.
6. Remove pressure hose.
purge air from pump.
6. Insert nozzle.
7. Plug in power cord,
reset the GFCI, start motor.
WARNING
ŠGun kicks back. Hold with both hands.
ŠRisk of injection or injury to persons. Do
not direct discharge stream at persons.
ŠRisk of fire and explosion. Do not spray
flammable liquids.
ŠTo reduce the risk of injury, read
owner's manual carefully before using.
©2005 NT+E Co. 800-270-0810
Part No. 778069
Motor and pump not
shown for clarity.
NOTE:
Only one set of
labels is used per
machine.
Labels may be
placed on right or left
side of machine.
Both locations are
shown.
Use the location that
does not obstruct
viewing labels.
Call 1-800-270-0810 to order new labels.
Instruction Label: Part No. 778166
Warning Label: Part No. 778069
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Machine Component Identification
I.) Unpack
Your pressure washer is shipped in one box. Separate and identify the components found in
both boxes.
* Figures shown are for representation only. Actual components will vary by model.
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810
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Machine Component Identification
II.) Hardware Bag
Flange Nut – Qty 8
Washer – Qty 2
Lock Nut – Qty 2
Part # 82019
Part # 82021
Part # 82013
Carriage Bolt - Qty 2
Part # 82233
T-Handle – Qty 2
Part # 38578
Gun Hook – Qty 2
Part # 38509
Hose Hook – Qty 3
Part # 38510
Grommet – Qty 5
Part # 35198
Nozzle – Qty 2
Part # 778150
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Machine Component Identification
III.) Handle Assembly
1.) Attach handle to base with two carriage bolts and t-handle knobs.
2.) Spin a flange nut backwards onto two hose hooks and each gun hook. (see hook detail)
3.) Mount the hose hooks and gun hooks onto the handle as shown.
4.) Make sure the top gun hook points back and the bottom gun hook points forward.
5.) Spin a lock nut onto the last hose hook and push on a washer (see top hook detail). Mount
the top hose hook with another washer and lock nut. Tighten lock nut until it is tight
enough to hold hose hook upright but it can still spin. This allows you to turn hook to
remove the power cord quickly.
6.) Insert grommets into the holes on the handle nameplate.
7.) Press nozzles into grommets according to the colors indicated on the handle decal.
hose hook
handle
Top Hook
Lock Nut
Detail
nozzles
grommets
and Washer
gun hooks
flange
nuts
Hook Detail
flange nut
carriage bolt
t-handle
knob
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Machine Component Identification
1.) Handle. Designed for easy cart
movement.
2.) Hose Hook. Store hose on hook.
3.) Pressure Hose. Attach quick couplers to
gun and water outlet.
4.) Chemical Hose. Submerge in cleaning
solution.
5.) Water Pump. Inspect for loose/broken
parts prior to each use.
6.) Motor. Leeson motor provides years of
reliable use.
7.) Gun Hook. Store gun on hook.
8.) Nozzles.
9.) Spray Gun. Always use two hands for
safe operation.
10.) Trigger. Actuate to allow pressurized
water to flow out of spray gun.
*Note: 157301 shown, location of components
on other models vary slightly.
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Pump Component Identification
157300
157301 & 157302
Operation Instructions
Water Supply
1.) Make sure the water supply is clean. Debris can cause excess pump wear and reduce
performance.
2.) An insufficient water supply will damage your pump. Make sure the water supply is steady and is
20% over the rated flow of your pump. Use a stopwatch to time how long it takes to fill a 5 gallon
bucket with your garden hose. The bucket must fill faster than the times listed in the table below.
Model
157300
157301
157302
Time to fill 5 gallon bucket
150 seconds
160 seconds
96 seconds
3.) The water supply garden hose must have an inside diameter of at least 5/8”. If the hose is more
than 100 ft. long, the diameter must be at least 3/4”.
4.) Never use a reservoir tank as a water source. Drawing water out of a tank may cause pump
cavitation and damage to your pump. This pressure washer is designed for a pressurized water
source such as a city water faucet. However, the water source pressure must not exceed 115 psi
(8 bar).
5.) Always use a flexible rubber hose for your water supply. Do not use rigid piping.
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Operation Instructions
START-UP INSTRUCTIONS
1. Attach garden hose.
2. Attach pressure hose.
3. Attach gun and lance.
4. Turn water supply ON.
5. Squeeze trigger to
purge air from pump.
6. Insert nozzle.
7. Plug in power cord
8. Reset the GFCI button on the cord
9. Start motor.
SHUT-DOWN INSTRUCTIONS
1. Turn motor OFF.
2. Unplug the power cord.
3. Turn water supply OFF.
4. Squeeze trigger to
relieve system pressure.
5. Remove garden hose.
6. Remove pressure hose.
WARNING
Skin puncture hazard.
High pressure fluid can inject under skin resulting in serious injury including
amputation. Do not direct spray at people or animals.
-If skin injection happens, seek IMMEDIATE surgical treatment.
-Do not check for leaks with hand. Instead, use a piece of cardboard to check for
leaks.
-Do not use unit if exterior hose damage is evident. Make sure all fittings are tight
before starting. Relieve system pressure before servicing.
-Know how to stop engine and bleed pressures quickly. Be thoroughly familiar with
the controls.
-Make sure accessories meet the unit's temperature and pressure limits.
-Stop engine and bleed pressures before leaving unit unattended.
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Operation Instructions
Spray Gun Safety Lock
When not spraying, use the spray gun safety lock to prevent accidental high pressure discharge.
spray gun
spray gun safety lock
Attaching the Lance
spin-on coupler
lance
Tighten spin-on coupler hand tight.
Note: The o-rings make the seal so there is no need to tighten with a wrench.
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Operation Instructions
Installing Nozzles
To install a nozzle pull back the collar and push the nozzle into the coupler. Once the connection is
made, pull on the nozzle to make sure it is secure.
coupler
lance
nozzle
collar
collar completely
pushed out.
collar NOT completely
pushed out.
CORRECT
INCORRECT
WARNING
Flying objects.
Make sure nozzle is secure before squeezing trigger. If nozzle is not secure it will become a
projectile. Serious injury can occur.
Attach Quick Connect Couplers
-To install the hose onto the pump, pull back the collar and push the hose into the coupler on the
pump.
-To install the hose onto the spray gun, pull back the collar on the spray gun and push the hose into
the coupler on the spray gun.
hose
pump
spray gun
Once the connections are made, pull on the hose to make sure it is secure.
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Operation Instructions
Applying Chemicals
1.) Install the black nozzle when applying chemicals onto the cleaning surface.
2.) Start the pressure washer according to the start-up instructions.
3.) Submerge the chemical hose in cleaning solution.
4.) Squeeze the spray gun trigger. The chemical injector will draw the chemical into the water
stream.
5.) Apply chemicals evenly onto the cleaning surface. Allow the chemicals to react with the dirt, then
clean at high pressure with high pressure (green or yellow) nozzle.
6.) Never use more chemical than is necessary to clean the surface.
7.) To clean the chemical injector, draw water through the strainer until all the chemical is purged
from the system.
pump
pump outlet
pump inlet
diluted
chemical
strainer
WARNING
Risk of exposure to dangerous chemicals.
Serious injury or death can result if chemical manufacturer instructions are not
followed.
-Wear protective gloves when handling and cleaning with chemicals.
-Understand all safety hazards and first aid for all chemicals being used.
-When cleaning filters, check if chemicals have been used and take any
precautions that are recommended by the chemical manufacturer.
-Different chemicals may interact dangerously with each other, always follow
chemical manufacturer directions before switching chemicals.
-Calculate the correct amount of chemical to mix, dispose of excess chemical
per the manufacturer instructions.
-Never spray flammable liquids.
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Maintenance and Storage
Maintenance Mode
Before performing any maintenance on the pressure washer, it must be placed in maintenance mode.
1.) Turn off motor and unplug cord.
2.) Turn off water supply.
3.) Squeeze trigger to relieve system pressure.
Maintenance Schedule
What to Check
When To Check
What to Do
Inlet Filter
Each Use
Visually inspect and clean inlet filter with clear water.
Visually inspect pressure hose and hose couplings. Replace
hose if any of the following is evident:
Pressure Hose
Each Use
hose coupling is damaged, wire mesh is exposed or
damaged, hose is permanently kinked or flattened, outer
hose cover is blistered or loose.
Bolts
Pump Oil
Each Use
Tighten any loose bolts.
Change pump oil. See pump oil change instructions on next
page.
After 1st 50hrs,
then 3mo/500hr
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Maintenance and Storage
Pump Oil Change
1.) Place a suitable container below the pump to catch the used oil, then remove the oil fill cap and oil
drain plug.
2.) Allow the used oil to drain completely, then reinstall the drain plug and tighten securely.
3.) Please dispose of used oil in a manner that is compatible with the environment. We suggest you
take used oil in a sealed container to your local recycling center or service station for reclamation.
Do not throw it in the trash, pour it on the ground or down the drain.
4.) With the pump in a level position, fill to the halfway point on the oil sight glass (see pump oil
capacities below). For Comet pumps use Universal Tractor Transmission Oil or Mobil 1 15W50
synthetic oil. For Cat pumps use SAE30 non-detergent oil or Cat Pump Oil Item# 22158.
Cat 3DX25GSI Pump
Cat 2DX20ES Pump
Comet BXD 1617E Pump
fill cap
fill cap
fill cap
sight glass
sight glass
sight glass
drain plug
drain plug
drain plug
Oil capacity: 4.3oz. (.13L)
Oil capacity: 8.5 oz. (.25L)
Oil capacity: 8.5 oz. (.25L)
FIG01854
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Maintenance and Storage
Winter Storage
Protect your pump, hose and gun from freezing.
Items needed: 12” piece of garden hose or equivalent, funnel and RV antifreeze (approximately 6 oz.)
1.) Follow the storage instructions listed above.
2.) Make sure the motor start switch is OFF.
3.) Attach the garden hose with funnel to the pump inlet (see illustration).
4.) Pour RV antifreeze into the funnel, run motor until antifreeze comes out the pump outlet.
5.) Drain all water from the high pressure hose. Depress trigger on gun and drain all water out of
gun/lance.
RV Antifreeze
Funnel
Hose
Water Inlet
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Troubleshooting
Problem
Motor will not start
SOLUTION: A,B
Low/Surging pressure or no water flow
No chemical injection
SOLUTION: C,D,E,F,G,H
SOLUTION: I,J,K,L
Cause
A- Tripped GFCI cord
B- Tripped motor relay
C- Insufficient water supply
D- Plugged pump inlet filter
E- Wrong nozzle
Solution
Reset GFCI cord
Reset motor
See water supply section of this manual
See maintenance section of this manual
Make sure high pressure nozzle is being used
Remove nozzle, check for blockage
Replace nozzle
F- Plugged nozzle
G- Worn nozzle
H- Leak in pressure hose
I- Wrong nozzle
Replace pressure hose
Make sure chemical nozzle is being used
J- Back pressure from extra long discharge hose Try shorter hose
K- Leak in chemical siphon hose
L- Chemical strainer not submerged
Replace hose – use hose clamps if necessary
Make sure strainer is completely submerged
The manufacturer reserves the right to make improvements in design
and/or changes in specifications at any time without incurring any
obligation to install them on units previously sold.
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810
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Specifications
157300
157301
PSI (bar)
1700 (117)
1.5 (5.7)
140°F (60°C)
33.5” X 20.9” X 38.6”
(851mm x 531mm x 980mm)
95 lb (44kg)
PSI (bar)
GPM (l/min)
Max Water Temp
Dimensions
L x W x H
2000 (138)
1.5 (5.7)
140°F (60°C)
GPM (l/min)
Max Water Temp
Dimensions
L x W x H
Weight
33.5” X 20.9” X 38.6”
(851mm x 531mm x 980mm)
Weight
115 lb (44kg)
157302
PSI (bar)
2750 (190)
2.5 (9.4)
140°F (60°C)
GPM (l/min)
Max Water Temp
Dimensions
L x W x H
Weight
33.5” X 20.9” X 38.6”
(851mm x 531mm x 980mm)
139 lb (55kg)
Wiring Diagram
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Wiring Diagram
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Part Explosion M157300 Rev E
ITEM
PART#
DESCRIPTION
QTY
Models
ITEM
PART#
DESCRIPTION
QTY
Models
1
2
3
4
5
6
38509
Threaded Gun Hook
2
1
5
1
3
2
1
1
2
2
1
1
All
All
All
All
All
778128
778132
778140
778141
778142
777616
777617
778670
779402
778154
38518
Electric Control Box Cover
Electric Control Box Cover
GFCI Cord, 120V/15A
GFCI Cord 120V/ 20A
GFCI Cord, 240V/30A
Motor, 1.5 HP Leeson
Motor, 2.0 HP Leeson
Motor, 5.0 HP Leeson
Pump, Comet BXD 1617E
Pump, Cat 2DX
1
1
1
1
1
1
1
1
1
1
1
1
157300
157301,2
157300
157301
157302
157300
157301
157302
157300
157301
157302
157302
23
778065 NorthStar Decal
35198 7/16 ID Grommet
778059 Handle
38510
38578
778125 Base
778129 Base
2278
24
25
Threaded Hose Hook
T-Handle Knob
All
157300
157301,2
All
All
157301,2
157301,2
7
8
9
10
11
Tire Wheel Assembly
26
27
305200 Wheel Retainer
38524
777915 3/8" Quick Connect Nipple
5/16 x 25' Gray Hose
Pump, Cat 3DX
3/8' NPT Easy Start Valve
38584
12
13
14
777914 3/8" Quick Connect Coupler
1
1
3 ft
1
1
1
1
1
1
1
157301,2
All
28
29
30
31
32
33
34
777347
777915
35918
6MP-6FP-6FP Tee Forged
QC 3/8" Female Nipple
Thermal Protector
1
1
1
1
1
2
1 ft
1
1
1
157302
157301,2
157301,2
157301,2
157302
157302
157302
All
2212
Chemical Strainer
777165 1/4" Braided Chemical Hose
778146 Motor Cord, 14-2 AWG SJTW
778147 Motor Cord, 12-2 AWG SJTW
All
157300
157301,2
157300
All
38596
Inlet Filter
15
777340
777834
777165
777855
5260
38527
313107
38526
1/4 MPT x 1/4 Hose Barb
Hose Clamp - 1/4"
1/4" Braided Bypass Hose
Toggle Switch
16
17
18
38523
1/4 x 25' Blk Hose
779166 18.5" Lance
777904 1/4" Quick Connect
778150 Nozzle 2 pack #2.0
All
35
157300,1
157302
All
On-Off Plate
All
19
38530
2215
Nozzle 2 pack #3.0
Bumpers
36
37
38
39
Gun, Consumer, QC
3/8" Male NPT Coupler
Gun, 2700 PSI, 22mm
Cord Warning
157301,2
157301,2
157300
All
20
21
22
2
1
1
1
1
1
1
778069 Warning Decal
778166 Instruction Decal
All
All
778070
778151
DP Contactor 120V/25A
157301
40
778152
DP Contactor 230V/30A
1
157302
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