M157471A
ITEM NUMBERS: 157471,
157472
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.
Engine is shipped without oil.
- Before starting engine, fill engine oil.
- See engine manual for engine oil requirements.
Closely inspect all components.
-If you have damaged components then: Contact the freight
company that delivered the unit and file a claim.
-If you have missing components then: Contact Customer
Service at 1-800-270-0810.
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810
©2003 K-Bar Industries
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Table of Contents
Important Safety Rules.....…...................................... 4-5
Warning Label Locations......…................................. 6
Unpacking………………………………………………….. 7
Machine Component Identification……………………… 8
Pump Component Identification..…………..…………… 9
Operation Instructions…........................…................ 10-13
Water Supply……………….………………………….. 10
Start-Up Instructions……………………..…………… 10
Shut-Down Instructions……………..…………………10
Spray Gun Safety Lock…………………….…………. 11
Attaching the Pressure Hose……..………………….. 11
Attaching the Lance……………………………….….. 12
Operating the Nozzle………………...………..……… 12
Applying Chemicals..………………….………………. 13
Maintenance....................................…………………. 14-15
Maintenance Mode……………………………………. 14
Maintenance Schedule……………………….………. 14
Cleaning/Replacing the Nozzle Orifice…...………… 14
Engine Oil Change….……………………………..….. 15
Storage....................................……………………….. 15
Long Term Storage…………………………………….15
Winter Storage………………………………………… 15
Troubleshooting .............................…......…….............. 16
Specifications and Accessories..........…….......…......... 16
Parts Explosion .......................................……............... 17
3
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Important Safety Rules
WARNING
1.) Read owner's manual completely.
Serious injury or death can result if safety instructions are not followed. You must be
16 or older to operate this machine. Keep untrained people away.
2.) 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, bleed pressure, and engage spray gun safety lock before leaving unit
unattended.
3.) Risk of fire and explosion.
Hot exhaust fumes from engine can cause fire. Gasoline is highly flammable and
explosive. You can be burned or seriously injured when handling fuel.
-Position muffler at least 7 feet from combustible objects.
-Before adding fuel, stop the engine and keep heat, sparks, and flame away. Do not
add fuel when engine is running or still hot. No smoking near engine.
-Do not pump fuel directly into engine at gas station. Static charge can build and
ignite fuel. Use a UL approved fuel container to transfer gas to the engine. Wipe up
fuel spills immediately.
-Only store and handle fuel outdoors. Gasoline vapors can ignite if they collect
inside an enclosure. Explosion can result.
-Do not change or add to exhaust system. Fire can result.
-Do not change or add fuel tanks or fuel lines. Fire can result.
-Before each use, check fuel tank and fuel lines for leaks. Any fuel leak is a fire
hazard. Fix any fuel leaks before starting engine.
-During transportation take precautions to make sure pressure washer will not tip
over and cause a fuel leak fire hazard.
4.) Poisonous gas.
This machine gives off carbon monoxide, a poisonous gas that can kill you. You
CANNOT smell it, see it, or taste it.
-ONLY run machine outdoors and away from air intakes.
-NEVER run machine inside homes, garages, sheds, or other semi-enclosed spaces.
These spaces can trap poisonous gases, EVEN IF you run a fan or open doors and
windows.
If you start to feel sick, dizzy, or weak while using this machine, shut it off and get to
fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.
Save These Instructions
4
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Important Safety Rules
WARNING
5.) 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.
6.) Risk of electrocution.
Electricity can kill you. Keep water away from electrical outlets and electrical
devices.
7.) Flying objects.
Small particles may fly out while spraying. Wear safety glasses. Serious eye
injury can occur.
Make sure nozzle is secure before squeezing trigger. If nozzle is not secure it
will become a projectile.
8.) Fall hazard.
Pressure washer creates puddles and slippery surfaces. Keep good footing
and balance. Serious injury can occur.
-Wear footwear cabable of maintaining a good grip on wet surfaces.
-Gun kicks back. Hold with both hands.
-Do not overreach or stand on unstable supports.
-Do not stand on ladders or scaffolding.
-Do not place pressure washer on soft or unstable ground.
CAUTION
1.) Hot muffler.
You can be burned by muffler. Do not touch.
Save These Instructions
5
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Warning Label Locations
Call 1-800-270-0810 to order new labels.
Instruction Label: Part No. 32538
Warning Label: Part No. 38570
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.
SHUT-DOWN INSTRUCTIONS
1. Turn engine OFF.
2. Turn water supply OFF.
WARNING
1.) Skin puncture hazard. Do
not direct spray at people or
animals. Seek IMMEDIATE
surgical treatment.
3. Squeeze trigger to
relieve system pressure.
4. Remove garden hose.
5. Remove pressure hose.
6. Turn fuel valve OFF
(if equipped).
2.) Risk of fire and explosion.
Do not add fuel when engine is
running or still hot.
7. Start engine.
3.) Breathing hazard.
Poisonous fumes from engine
can kill you. Do not operate
indoors even if ventilated.
4.) Risk of electrocution.
Keep water away from electric
outlets and electric devices.
5.) Read owner's manual.
Serious injury or death can
result if safety instructions are
not followed.
©2003 K-Bar Industries 800-270-0810
Part No. 38570
CAUTION
Engine and pump not
shown for clarity.
1.) Burn hazard.
Do not touch hot muffler.
6
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Unpacking
-Separate and identify the components.
Pressure Washer
Pressure Hose
Spray Gun
Lance
Owner’s Manual
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810
7
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Machine Component Identification
1.) Carry Handle
2.) Pressure Hose
3.) Chemical Hose
4.) Water Pump
5.) Engine
6.) Nozzle
7.) Spray Gun
8.) Trigger
8
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Pump Component Identification
Inlet filter
Water inlet
Water outlet
Chemical hose
Chemical
strainer
9
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Operation Instructions
Water Supply
1.) Make sure water supply is clean. Debris can cause excess pump wear and reduce
performance.
2.) An insufficient water supplywill 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 be filled in less than 125 seconds.
3.) The water supplygarden 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.
Start-Up Instructions
1.) Attach garden hose to water inlet.
2.) Attach pressure hose to water outlet and spraygun.
3.) Attach spraygun to lance.
4.) Turn water supplyON.
5.) Squeeze trigger to purge air from water pump.
6.) Start engine.
Shut-Down Instructions
1.) Turn engine OFF.
2.) Turn water supplyOFF.
3.) Squeeze trigger to relieve system pressure.
4.) Remove garden hose.
5.) 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.
10
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Operation Instructions
Spray Gun Safety Lock
When not spraying, use the spraygun safetylock to prevent accidental high pressure discharge.
Spray gun
Spray gun
safety lock
Attaching the Pressure Hose
- To attach the pressure hose to the pump, thread the pressure hose’s 22mm coupler onto the
water pump’s outlet hand tight.
- To attach the pressure hose to the spraygun, thread the pressure hose’s 22mm coupler onto
the spraygun’s inlet hand tight.
- Note: The o-rings make the seal so there is no need to tighten with a wrench.
Spray gun
Pressure hose
Water pump
22mm coupler
11
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Operation Instructions
Attaching the Lance
Tighten spin-on coupler hand tight.
Note: The o-rings make the seal so there is no need to tighten with a wrench.
Spin-on
coupler
Operating the Nozzle
-Twist the nozzle to change the spraypattern from a straight stream to a 45o fan.
-Pull the nozzle back for high pressure; push the nozzle forward for low pressure.
Nozzle
12
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Operation Instructions
Applying Chemicals
1.) Push the nozzle forward for low pressure to spraychemicals onto the cleaning surface.
2.) Start the pressure washer according to the start-up instructions.
3.) Submerge the chemical hose and chemical strainer in cleaning solution.
4.) Squeeze the spraygun trigger. The chemical injector will draw the cleaning solution into the water
stream.
5.) Applychemicals evenlyonto the cleaning surface. Allow the chemicals to react with the dirt, then
clean at high pressure bypulling the nozzle backward.
6.) Never use more chemical than is necessaryto clean the surface.
7.) Rinse chemical injector byfollowing steps 1 through 4 with clean water.
Chemical hose
Cleaning
solution
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.
13
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Maintenance
Maintenance Mode
Before performing anymaintenance on the pressure washer, it must be placed in maintenance mode.
1.) Turn off engine.
2.) Turn off water supply.
3.) Squeeze trigger to relieve system pressure.
4.) Unplug spark plug wire from spark plug. (see engine owner’s manual)
Maintenance Schedule
What to Check When To Check
What to Do
Inlet Filter
Each Use
Visuallyinspect and clean inlet filter with clear water.
Visuallyinspect pressure hose and hose couplings. Replace
hose if anyof the following is evident:
Pressure Hose
Each Use
hose coupling is damaged, wire mesh is exposed or damaged,
hose is permanentlykinked or flattened, outer hose cover is
blistered or loose.
Bolts
Engine Oil
Each Use
See engine
manual
Tighten anyloose bolts.
See engine manual for oil change intervals,see Maintenance
section of this manual for oil change instructions.
The pump’s crankcase is sealed; oil changes are not required.
Pump Oil
Never
Cleaning/Replacing the Nozzle Orifice
1.) Place pressure washer in
maintenance mode. (see above)
2.) Insert a 2mm hexwrench into orifice
and turn counter-clockwise to remove
orifice from nozzle.
- To clean orifice, remove anydebris
and soak in descaling solution to
remove hard water deposits.
- To replace orifice, order p/n
PD38780 from NorthStar Customer
Service, 1-800-270-0810
2mm hex
wrench
3.) Use 2mm hexwrench and turn
clockwise to reinstall orifice.
14
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Maintenance
Engine Oil Change
1.) Place a suitable container on the ground
to catch the used oil, then remove the
engine oil fill cap.
2.) Tip the pressure washer on its side to
pour the used oil out through the
engine’s oil fill tube.
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 dump it down the drain.
4.) With the pressure washer in a level
position, add oil to the engine. (see
engine owner’s manual for type of oil
and capacity)
Oil fill tube
Storage
Long Term Storage
Follow the engine owner’s manual for storing the
engine.
Winter Storage
Protect your pump, hose, and gun from freezing.
Items needed: 12” piece of garden hose or equivalent,
funnel and RVantifreeze (approximately6 oz.)
1.) Follow the storage instructions listed above.
2.) Disconnect spark plug cable. Make sure the engine
throttle lever is in the “stop” position.
RV
antifreeze
3.) Attach the garden hose with funnel to the water
inlet (see illustration).
Funnel
4.) Pour RVantifreeze into the funnel; pull the engine
recoil until antifreeze comes out of the water outlet.
5.) Drain all water from the pressure hose. Depress
trigger on spraygun to drain all water out of the
spraygun/lance.
Hose
Water inlet
15
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Troubleshooting
Problem
Engine will not start
SOLUTION: A
Low/Surging pressure or no water flow
SOLUTION: B,C,D,E,F,G
No chemical injection
SOLUTION: H,I,J,K
Cause
Solution
A- Engine starting instructions not followed
B- Insufficient water supply
See engine manual for starting instructions
See water supply section of this manual
See maintenance section of this manual
Pull nozzle back for high pressure
Remove nozzle orifice, check for blockage
Replace nozzle orifice
C- Plugged pump inlet filter
D- Nozzle in low pressure position
E- Plugged nozzle orifice
F- Worn nozzle orifice
G- Leak in pressure hose
Replace pressure hose
H- Nozzle in high pressure position
I- Back pressure from extra long pressure hose
J- Leak in chemical siphon hose
K- Chemical strainer not submerged
Push nozzle forward for low pressure
Use standard length hose
Replace hose – use hose clamps if necessary
Make sure strainer is completelysubmerged
Specifications and Accessories
Specifications
157471
157472
PSI
GPM
2000
2.0
PSI
GPM
2400
2.0
Ma x Water Temp
Dimensions (inches)
L x W x H
Ma x Water Temp
Dimensions (inches)
L x W x H
140°F
16.75 x13.5 x 19.75
140°F
16.75 x13.5 x 19.75
Weight
50 lbs
Weight
52 lbs
Accessories
Wheel kit, Item# 157473
Call Northern Tool & Equipment, 1-800-556-7885
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
16
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Parts Explosion
Item Part# Description
Qty
Model
all
all
157471
157472
Item Part# Description
Qty
1
1
3ft
1
1
4
1
Model
157471
157472
all
1
2
38528 Lance
1
1
1
1
1
1
1
1
38512 Water pump, VRX2017V
38513 Water pump, VRX2022V
33488 Chemical hose
8
38526 Spray gun
38488 Engine, 4HP Tecumseh
37442 Engine, 6HP Tecumseh
38506 Base
32538 Instruction decal
38570 Warning decal sheet
38541 NorthStar decal
9
3
10
11
12
13
2212
38505 Carry handle
2215 Rubber f eet
38523 Pressure hose
Chemical strainer
all
4
5
6
7
all
all
all
all
all
all
all
17
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