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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:_____________