Pressure Washer Installation, Operation, And Maintenance Manual

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M157304E

157303 & 157304 Manual

Installation, Operation, and Maintenance Manual

PRESSURE WASHER: Cleans dirty surfaces with high pressure water.

To the Owner:

Thank you for purchasing a Northstar pressure washer. Your machine is designed for long life, dependability,

and the top performance you demand! Take time now to read through this manual so you better understand the

machine’s operation, maintenance and safety precautions. Everyone who operates this machine must read and

understand this manual. The time you take now will prolong your machine’s life and prepare you for its safe

operation. Enjoy the exceptional performance of your Northstar pressure washer, the industry leader! 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.

Quick Facts

Pump Oil Pump is shipped with oil. Change oil plug and check pump oil level before starting.

Use SAE 30 Non-detergent pump oil (item# 4043) or Cat Pump oil (item# 22158) for oil

changes.

Water Make sure your water flow is 20% higher than the pressure washer’s flow rate.

Make sure your water is clean and particle free.

Storage Do not allow water to freeze in the pump, hose, or spray gun.

Spraying

Chemicals

Use any North Star brand or equivalent pressure washer chemicals.

Adjust soap adjustment knob to regulate cleaning power.

Maintenance

Schedule

Pump: Oil: change after first 50 hours, then every 3 months or 500 hours.

Read and understand all manuals before operating.

Any Questions, Comments, Problems or Parts Orders

In the United States In the United Kingdom

Northstar Customer Service

Call 02392639752

Call 1-800-270-0810 Northern Tool and Equipment Co. (UK) Ltd.

Hours: Monday - Friday 7:00 AM to 5:30 PM Unit 2, Keel Close,

Saturday 7:30 AM-11:30 AM Central Time Portsmouth, Hants PO3 5QD, England

ITEM NUMBER:

SERIAL NUMBER:

HP:______ Volts:______ Amp:______ Ph:_____

RPM:____ PSI:____ GPM:____ Nozzle Size:_____

Pump:___________ Hose:______ Lance:_______

Max. Discharge Temperature:_____________

Summary of content (19 pages)

PAGE 1
M157304E 157303 & 157304 Manual ITEM NUMBER: SERIAL NUMBER: HP:______ Volts:______ Amp:______ Ph:_____ RPM:____ PSI:____ GPM:____ Nozzle Size:_____ Pump:___________ Hose:______ Lance:_______ Max. Discharge Temperature:_____________ Installation, Operation, and Maintenance Manual PRESSURE WASHER: Cleans dirty surfaces with high pressure water. To the Owner: Thank you for purchasing a Northstar pressure washer.
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Table of Contents Important Safety Instructions Grounding Instructions Machine Component Identification Installation Instructions Operating Instructions 2 2 3 4-7 8-10 Maintenance Instructions Long Term Storage Troubleshooting Parts Breakdowns Wiring Diagram 10-11 11 12 12-17 18 Important Safety Instructions WARNING -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.
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Machine Component Identification 157303/157304 Ref # 1 2 3 Description Inlet/Filter On/Off Switch High Pressure Outlet Ref # 4 5 6 Description Pump Unloader Motor fig 0 2 2 8 8 3
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Installation Instructions I.) Unpack Separate and identify all components. Use the assembly instructions in this manual for assembly.
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HARDWARE BAG: Separate and identify all components. Use the assembly instructions in this manual for assembly.
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II.) Assembly Instructions A. 1. To spray chemical, insert the chemical injector into the quick connect oulet of the pressure washer as shown. 2. Connect the clear hose to the chemical strainer and to the inlet of the chemical injector. This is inside the base unit on the 157303, chemical injector can remained installed at all times. Have hose exit base as shown below. 3. Install the pressure hose onto the chemical injector as shown, for 157304. Install on quick connect outlet on 157303. 4.
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III.) Wiring Instructions This pressure washer is shipped without a power cord and is intended to be hard wired into your electrical system. The following instructions will help you to hard wire this unit. Electrical Requirements: Item Number 157303 157304 Step 3: Locate terminal block inside the electrical housing and attach wires (like colors should be across from each other). Circuit Rating 115V/20A 230V/30A WARNING: Make sure to use a dedicated circuit that includes a GFCI.
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Operating Instructions Read and understand the entire manual before operating the pressure washer. Follow these instructions every time you use the pressure washer. I.) Pre-Operation III.) Before Starting ; A.) Position the machine for easy access to all controls. ; B.) Position the machine on a solid surface, with less than a three degree slope, and so it is protected from external damage. ; C.) Make sure ambient lighting is sufficient for the surface you are cleaning to be seen with ease.
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V.) Attach Nozzle Nozzle 00663 Color of Nozzle: Red Yellow Spray Angle 0 15 Green White Black 25 40 Used For: Highest Impact Tough Stains/ Stripping General Light Cleaning Low pressure/ Chemical Application Your pressure washer is equipped with five nozzles. To install a nozzle simply pull back the collar and push the nozzle into the coupler. Once the connection is made, pull on the nozzle to assure a tight connection.
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WARNING: Do not alter the unloader valve’s maximum pressure. Excess pressures could cause serious injury and/or pump damage. Any alteration other than turning the adjustment knob will void your warranty. To Stop 1. If detergents were used, draw clean water through the detergent inlet line to purge detergent. Failure to do so may clog the chemical injector. 2. Turn the pump switch OFF. 3. Turn OFF the water supply. 4. Squeeze the trigger to relieve the system pressure.
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Changing The Pump Oil Quantities Of Fluid Change oil after first 50 hours, then every 3 months or 500 hours 1.) Remove oil drain plug 2.) Drain pump oil 3.) Replace oil drain plug 4.) Fill pump with Cat Item# 22158 pump oil. 5.) Fill half way up the sight glass. Pump Cat 2DX15ES CAT 5CP3120 Type of Fluid SAE 30** SAE 30** QTY 8.5oz (0.25L) 17.0oz (0.41L) **Non-Detergent Oil (order Cat Item# 22158 pump oil.
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Troubleshooting Guide Pressure Washer Will Not Run At All - No Power Solutions Causes Machine turned OFF Line circuit breaker tripped Turn Pump switch ON Check for tripped circuit breaker in building Causes Circuit Breaker Trips Solutions Voltage too low Circuit Breaker Overloaded Pressure set too high Check the voltage Make sure there is no other equipment using the same circuit. Check/adjust pressure setting on unloader.
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157304 Parts Breakdown RevE 13
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RevE 157304 Parts Breakdown ITEM 1 2 3 4 5 6 7 8 10 11 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 PART# 777123 778294 33555 778268 778357 778280 33543 778221 2215 778214 33556 34200 778152 777855 778244 2212 777165 31934 777409 777913 36290 778147 778670 33561 33562 778240 778225 313100 34325 777179 31310 777837 30511 DESCRIPTION Strain relief, 10 GA.
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RevE 157303 Parts Breakdown / / 7 S tart 1 .) C o n n e c t 2 .) C o n n e c t 3 .) C o n n e c t 4 .) T u r n 5 .) S p r a y w a t e r 6 .) T u r n Sh ut 1 .) T u r n 2 .) T u r n 3 .) R e l i e v e p r e s s u r e spra y 4 .) 5 .
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157303 RevE Parts Breakdown ITEM 1 2 3 4 5 6 7 8 9 10 11 14 15 16 17 18 19 20 21 22 23 24 25 PART# 777123 778294 33555 778268 778357 778280 33543 778216 777837 2215 778214 33556 34200 778151 777855 778244 2212 777165 778154 777409 777913 36290 778371 DESCRIPTION Strain relief, 10 GA.
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157304 Pump Breakdown 5CP3120 VALVE KIT 33060 ITEM PART # 17547 163 46658 164 46429 166 43750 167 46583 168 17549 172 QTY 2 2 2 2 2 2 SEAL KIT ITEM 96 106 121 127 ITEM 2 5 8 10 11 15 20 25 30 31 32 33 37 38 40 48 49 50 51 53 64 65 70 75 PART # 30057 96031 46910 14028 43222 14480 46743 46928 48224 828710 46798 14179 43987 44428 92519 25625 23170 46940 14044 46912 46746 46747 46838 43900 DESCRIPTION Key (M6) Screw, Sem HC M8x16 Cover Bearing O-Ring \, Bearing Cover Seal, Oil, Crankshaft Bearing Rod, Con
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157303 Pump Breakdown 18
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Wiring Diagram 157304 L2 L1 157303 L2 L1 19