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Installation, Operation, and Maintenance Manual
PRESSURE WASHER
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.
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
Use any North Star brand or equivalent pressure washer chemicals.
Chemicals
Adjust soap adjustment knob to regulate cleaning power.
Maintenance
Pump:
Schedule
Read and understand all manuals before operating.
Any Questions, Comments, Problems or Parts Orders
In the United States
Northstar Customer Service
Call 1-800-270-0810
Hours: Monday - Friday 7:00 AM to 5:30 PM
Saturday 7:30 AM-11:30 AM Central Time
Cleans dirty surfaces with high pressure water.
:
Quick Facts
Oil: change after first 50 hours, then every 3 months or 500 hours.
M157304E
157303 & 157304 Manual
ITEM NUMBER:
SERIAL NUMBER:
HP:______ Volts:______ Amp:______ Ph:_____
RPM:____ PSI:____ GPM:____ Nozzle Size:_____
Pump:___________ Hose:______ Lance:_______
Max. Discharge Temperature:_____________
In the United Kingdom
Call 02392639752
Northern Tool and Equipment Co. (UK) Ltd.
Unit 2, Keel Close,
Portsmouth, Hants PO3 5QD, England
1
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Summary of Contents for North Star M157304E
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Page 1: Quick Facts
PRESSURE WASHER 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. -
Page 2: Important Safety Instructions
Important Safety Instructions Grounding Instructions Machine Component Identification Installation Instructions Operating 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. - Do not operate in a flammable environment. CAUTION -Gun kicks back. -
Page 3: Machine Component Identification
Machine Component Identification Ref # Description Inlet/Filter On/Off Switch High Pressure Outlet 157303/157304 Ref # Description Pump Unloader Motor fig 0 2 2 8 8... -
Page 4: Installation Instructions
Installation Instructions I.) Unpack Separate and identify all components. Use the assembly instructions in this manual for assembly. - Page 5 HARDWARE BAG: Separate and identify all components. Use the assembly instructions in this manual for assembly.
- Page 6 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.
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Page 7: Wiring Instructions
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 Circuit Rating... -
Page 8: Pre-Operation
Read and understand the entire manual before operating the pressure washer. Follow these instructions every time you use the pressure washer. I.) Pre-Operation 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. - Page 9 WARNING: Only use North Star pressure washer chemicals or chemicals specifically formulated for pressure washers. Used For: Follow the chemical manufacturer’s recommendations.
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Page 10: Maintenance Instructions
All mechanical equipment, no matter how well designed, will need repairs. A North Star pressure washer is no exception. At times, a North Star pressure washer may be inoperable because repairs are required. North Star Customer Service will assist in... -
Page 11: Changing The Pump Oil
4.) Fill pump with Cat Item# 22158 pump oil. 5.) Fill half way up the sight glass. Oil Drain Plug During cold weather, store the pressure washer indoors and move it outdoors before starting the motor. Follow these instructions to prevent the pump from freezing during storage. Storage:... -
Page 12: Troubleshooting Guide
Pressure Washer Will Not Run At All - No Power Causes Machine turned OFF Line circuit breaker tripped Causes Voltage too low Circuit Breaker Overloaded Pressure set too high Pressure Washer Runs But Will Not Spray Water Causes Trigger released... - Page 13 157304 RevE Parts Breakdown...
- Page 14 RevE 157304 Parts Breakdown ITEM PART# DESCRIPTION 777123 Strain relief, 10 GA. cord 778294 Brace 33555 Warning decal 778268 Rear panel 778357 Front panel 778280 Roof 33543 Insert 778221 Base 2215 Rubber bumper 778214 Top, electrical housing 33556 Terminal block decal 34200 Terminal block 778152...
- Page 15 RevE 157303 Parts Breakdown S t a r t S h u t 1 .) C o n n e c t 1 .) T u r n 2 .) C o n n e c t 2 .) T u r n 3 .) C o n n e c t 3 .) R e l i e v e p r e s s u r e 4 .) T u r n...
- Page 16 RevE 157303 Parts Breakdown ITEM PART# DESCRIPTION 777123 Strain relief, 10 GA. cord 778294 Brace 33555 Warning decal 778268 Rear panel 778357 Front panel 778280 Roof 33543 Insert 778216 Base 777837 Hex Head Plug, 3/8 2215 Rubber bumper 778214 Top, electrical housing 33556 Terminal block decal 34200...
- Page 17 157304 Pump Breakdown ITEM PART # DESCRIPTION 30057 Key (M6) 96031 Screw, Sem HC M8x16 46910 Cover Bearing 14028 O-Ring \, Bearing Cover 43222 Seal, Oil, Crankshaft 14480 Bearing 46743 Rod, Connecting Assembly 46928 Crankshaft, Dual End 48224 Cover, Bearing Blind 828710 Protector, Oil Cap 46798...
- Page 18 157303 Pump Breakdown...
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Page 19: Wiring Diagram
Wiring Diagram 157304 157303...
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