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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.
Maintenance Instructions
WARNING: Unauthorized machine modification or use of
non-approved replacement parts may cause personal injury
and/or property damage and will void the manufacturer
warranty.
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
these repairs as needed, but if an inoperable pressure washer
creates a major expense to your business then we strongly
recommend the following:
1. Have someone on staff who is trained in the operation of the
pressure washer and is capable of making minor repairs and
performing all preventative maintenance procedures as
outlined in the provided manuals.
2. Keep a stock of recommended service parts for maintenance
and minor repairs.
Recommended Service Parts List
Following is a list of the service parts we recommend stocking.
Description Part Number
Nozzle 5 Pack (157303) 778197
Nozzle 5 Pack (157304) 778281
O-Ring for Hose 30784
Pump Oil 4043
Chemical Injector 31935
Spray Gun 319153
50’ Pressure Hose 32276
Maintenance Mode
Before performing any maintenance on the pressure washer, it
must be placed in maintenance mode.
A.) Turn off water supply
B.) Bleed water from system
C.) Disconnect power by unplugging power cord and/or
flipping circuit breaker OFF.
Maintenance Schedule
What to Check When To Check What to Do
Inlet Filter Each Use Clean
Hoses Each Use Check for Wear
Bolts Each Use Check for Loose
Bolts
Cleaning The Inlet Filter
WARNING: Check whether dangerous chemicals have been
used, and take precautions when handling filters.
A.) Unscrew inlet filter cap
B.) Remove Inlet filter
C.) Run water though to clean filter
Checking the Hoses
WARNING: Do not use a finger or skin to check for leaks.
Escaping fluid under pressure has sufficient force to
penetrate the skin, causing serious injury. Do not operate the
pressure washer if the hose is cracked, worn, or leaking.
A.) Check all hoses for leaks
B.) Check all hoses of worn areas
Good
Bad
Bad
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Wire Mesh
Water Lea
k