North Star M157471A User manual

2003 K-Bar Industries
TM
M157471A
ITEM NUMBERS:157471,
157472
Owner’s Manual
Pressure Washer: Machine that cleans dirty
surfaces with high pressure water.
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810
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 unitand file a claim.
-If you have missing components then: ContactCustomer
Service at 1-800-270-0810.
Read this manual.
Serious injury or death can result if safety instructions are not followed.
WARNING

2
Hazard Signal Word Definitions

3
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

4
Important Safety Rules
Save These Instructions
1.) Read owner's manual completely.
Serious injury or death can result if safety instructions are not followed. You must be
16 or older tooperatethis machine. Keepuntrained 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.
-Ifskin injection happens, seek IMMEDIATE surgical treatment.
-Do notcheck for leaks with hand. Instead,use a piece of cardboardtocheck 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.
-Makesure accessories meetthe unit's temperatureand pressure limits.
-Stop engine, bleed pressure, andengagespraygun safety lockbefore leaving unit
unattended.
3.) Risk of fire and explosion.
Hot exhaustfumes from engine cancause fire. Gasoline is highlyflammable and
explosive. You can be burned or seriously injured when handling fuel.
-Position muffler at least 7 feet from combustible objects.
-Beforeadding fuel,stoptheengineandkeep heat, sparks,and flameaway. Do not
add fuel when engine is running or still hot. No smoking near engine.
-Do notpump fuel directly into engine atgas station. Staticchargecanbuildand
ignitefuel. Use aULapproved fuel container totransfer gas to the engine. Wipe up
fuel spills immediately.
-Only store and handle fuel outdoors. Gasolinevapors canigniteif they collect
insidean enclosure. Explosioncanresult.
-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 precautionsto 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.
Thesespaces cantrappoisonousgases,EVEN IF you runa 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
freshair RIGHTAWAY. See a doctor. Youmay have carbon monoxide poisoning.
WARNING

5
Important Safety Rules
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 canoccur.
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.
-Gunkicks back. Holdwith 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.
WARNING
Save These Instructions

6
Warning Label Locations
SHUT-DOWN INSTRUCTIONS
1. Turn engine OFF.
2. Turn water supply OFF.
3. Squeeze trigger to
relieve system pressure.
4. Remove garden hose.
5.Remove pressure hose.
6. Turn fuel valve OFF
(if equipped).
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. Start engine.
Call 1-800-270-0810 to order new labels.
Instruction Label: Part No. 32538
Warning Label: Part No. 38570
Engine and pump no
t
shown for clarity.
1.) Burn hazard.
Do not touch hot muffler.
CAUTION
Part No. 38570
1.)Skinpuncture hazard. Do
not direct spray at people or
animals. Seek IMMEDIATE
surgical treatment.
2.) Risk of fire and explosion.
Do not add fuel when engine is
running or still hot.
3.) Breathinghazard.
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.
WARNING
2003 K-Bar Industries 800-270-0810

7
Unpacking
-Separate and identify the components.
Pressure Washe
r
Pressure Hose
Spray Gun Lance Owner’s Manual
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Customer Service 1-800-270-0810

8
Machine Component Identification
1.) Carry Handle
2.) Pressure Hose
3.) Chemical Hose
4.) Water Pump
5.) Engine
6.) Nozzle
7.) Spray Gun
8.) Trigger

9
Pump Component Identification
Water inlet
Water outlet
Inlet filter
Chemical hose
C
hemical
strainer

10
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 useunit if exterior hose damage is evident. Make sure all fittings are tight
before starting. Relieve system pressure before servicing.
-Knowhow to stop engine and bleedpressures 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.
WARNING
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 bucketwith your garden hose. The bucketmustbe filled in less than 125seconds.
3.) The water supplygarden hose musthave an inside diameter ofatleast5/8”. Ifthe hose is more
than 100 ft. long,the diameter mustbe atleast 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 notuse rigid piping.
Start-UpInstructions
1.) Attach garden hose to water inlet.
2.) Attach pressure hose to water outletand spraygun.
3.) Attach spraygun to lance.
4.) Turn water supplyON.
5.) Squeeze trigger to purge air from water pump.
6.) Startengine.
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.

11
Operation Instructions
Spray Gun Safety Lock
When not spraying,use thespraygunsafetylock to preventaccidental high pressure discharge.
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 sealso there is no need to tighten with a wrench.
Spray gun
Spray gun
safetylock
Pressure hose
Spray gun
Water pum
p
22mm coupler

12
Operation Instructions
Attaching the Lance
Tightenspin-on coupler hand tight.
Note:The o-rings make the sealso there is no need to tighten with a wrench.
Operating the Nozzle
-Twistthe nozzle to change thespraypattern from astraight stream to a 45ofan.
-Pull the nozzle backfor high pressure;push the nozzle forward for low pressure.
Nozzle
Spin-on
cou
p
le
r

13
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 directionsbefore switching chemicals.
-Calculate the correct amount of chemical to mix, dispose of excess chemical
per the manufacturer instructions.
-Never spray flammable liquids.
WARNING
Operation Instructions
Applying Chemicals
1.) Push the nozzle forward for low pressure to spraychemicals onto the cleaningsurface.
2.) Startthe pressure washer according to thestart-up instructions.
3.) Submerge the chemical hose and chemical strainer in cleaningsolution.
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 usemore chemical than is necessaryto clean thesurface.
7.) Rinse chemical injector byfollowing steps 1 through 4 with clean water.
Chemical hose
Chemicalstrainer
Cleaning
solution

14
Maintenance
Maintenance Mode
Before performing anymaintenance on the pressure washer,it mustbe placed inmaintenance mode.
1.) Turn off engine.
2.) Turn off water supply.
3.) Squeeze trigger to relieve system pressure.
4.) Unplugspark plug wire from spark plug. (see engine owner’s manual)
Maintenance Schedule
What toCheck WhenTo Check What toDo
Inlet Filter Each Use Visuallyinspectand clean inletfilter with clear water.
Pressure Hose Each Use Visuallyinspectpressure hose and hose couplings.Replace hose ifanyofthe following is evident:
hose coupling is damaged,wiremesh is exposed or damaged,
hose is permanentlykinked or flattened, outer hose cover is
blistered or loose.
Bolts Each Use Tighten anyloose bolts.
Engine Oil See engine
manual See enginemanual for oil change intervals,see Maintenance section ofthis manual for oil change instructions.
Pump Oil Never The pump’s crankcase is sealed; oil changes are notrequired.
Cleaning/Replacing the Nozzle Orifice
1.) Place pressure washer in
maintenancemode.(see above)
2.) Inserta 2mm hexwrench into orifice
and turn counter-clockwise to remove
orifice from nozzle.
- To clean orifice,remove anydebris
andsoak in descaling solution to
remove hard water deposits.
- To replace orifice,orderp/n
PD38780 from NorthStar Customer
Service,1-800-270-0810
3.) Use 2mm hexwrench and turn
clockwise to reinstall orifice.
2mm hex
wrench

15
Oil fill tube
Maintenance
Engine Oil Change
1.) Place asuitable 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 outthrough the
engine’s oil fill tube.
3.) Please dispose ofused oil in amanner
thatis 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 notthrow itin the trash,pour iton the
ground,or dump itdown the drain.
4.) With the pressure washer in a level
position, add oil to the engine.(see
engine owner’s manual for type ofoil
and capacity)
Storage
Long Term Storage
Follow the engine owner’s manual for storing the
engine.
Winter Storage
Protectyour pump,hose,and gun from freezing.
Items needed: 12” piece ofgarden hose or equivalent,
funnel and RVantifreeze (approximately6 oz.)
1.) Follow thestorage instructions listed above.
2.) Disconnectsparkplug cable. Make sure the engine
throttle lever is in the “stop” position.
3.) Attach the garden hose with funnel to the water
inlet(see illustration).
4.) Pour RVantifreeze into the funnel; pull the engine
recoil until antifreeze comes outofthe water outlet.
5.) Drain all water from the pressure hose. Depress
trigger onspraygun to drain all water out ofthe
spraygun/lance.
R
V
antifreeze
Funnel
Hose
Water inlet

16
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 notfollowed See enginemanual for starting instructions
B- Insufficient watersupply See watersupplysection of this manual
C- Plugged pump inletfilter See maintenance section ofthis manual
D- Nozzle in low pressure position Pull nozzle back for high pressure
E- Plugged nozzle orifice Remove nozzle orifice,checkfor blockage
F- Worn nozzle orifice Replace nozzle orifice
G- Leak in pressure hose Replace pressure hose
H- Nozzle in high pressure position Push nozzle forward for low pressure
I- Back pressure from extra long pressure hose Use standard length hose
J- Leak in chemical siphon hose Replace hose – use hose clamps ifnecessary
K- Chemicalstrainer notsubmerged Make surestrainer is completelysubmerged
Specifications and Accessories
Specifications
157471 157472
PSI 2000 PSI 2400
GPM 2.0 GPM 2.0
Max Water Temp 140FMax Water Temp 140F
Dimensions (inches)
L x W x H 16.75 x13.5 x 19.75 Dimensions (inches) L x W x H 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

17
Parts Explosion
Item Part# Description Qty Model Item Part# Description Qty Model
1 38528 Lance 1 all 38512 Water pump, VRX2017V 1 157471
2 38526 Spray gun 1 all 838513 Water pump, VRX2022V 1 157472
38488 Engine, 4HP Tecumseh 1 157471 9 33488 Chemical hose 3ft all
337442 Engine, 6HP Tecumseh 1 157472 10 2212 Chemical strainer 1 all
4 38506 Base 1 all 11 38505 Carry handle 1 all
5 32538 Instruction decal 1 all 12 2215 Rubber feet 4 all
6 38570 Warning decal sheet 1 all 13 38523 Pressure hose 1 all
7 38541 NorthStar decal 1 all