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North Star M157310AC.1 - User Manual

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1
M157310AC.1
Owner's Manual
Instructions for Set-up, Operation, Maintenance & Storage
HOT WATER/STEAM PRESSURE WASHER 3000 PSI / 4 GPM
Portable Outdoor-Use Only
This pressure washer produces both cold and hot water high pressure spray as well as steam spray. Cleaning
chemicals may be incorporated into the spray if desired. The pressure pump for this equipment is powered by
a gasoline internal combustion engine and the water is heated by a kerosene/fuel-oil fired, open flame burner.
WARNING READ THIS MANUAL
READ and UNDERSTAND this Owner's Manual and the Engine Owner's Manual
completely before attempting to set up and use the pressure washer! Failure to properly set
up, operate, and maintain this pressure washer could result in serious injury or death to operator
or bystanders.
WARNING SPECIAL HAZARDS
CO Poisoning
Exhaust from both the engine and burner contains carbon monoxide, a
poisonous gas that can cause carbon monoxide poisoning and possible
death if inhaled. ONLY run pressure washer OUTDOORS and at least 20
feet from the home, away from windows, vents and air intakes, to allow
proper ventilation. If you start to feel sick, dizzy, or weak while using the
pressure washer, shut off the engine and get to fresh air RIGHT AWAY.
Skin/Eye
Injury
High-pressure spray can cause serious skin or eye injury, including injection injury
if fluid pierces the skin. Injection injury can result in blood poisoning and/or
severe tissue damage.
Burns
Hot spray can scald and burn skin.
Hot surfaces of wand, engine and burner, as well as hot exhaust from both
the engine and burner can cause burns.
Slips/Falls
Spray discharge can cause puddles and slippery surfaces.
Spray-gun kickback can cause operator loss of balance and falls.
Flying Debris
High-pressure spray can cause surface damage and flying debris.
Fire/
Explosion
Engine and burner sparking can ignite fuel or other flammable liquids or
vapors in the vicinity.
Hot exhaust from engine and burner can ignite combustible materials.
Chemical
Exposure
Cleaning chemical vapors or contact with skin may be hazardous.
Electric shock
Spray contact with electrical sources can cause electric shock.
A summary of important safety information is provided at the end of the manual.
Any Questions, Comments, Problems, or Parts Orders
Call NorthStar Product Support 1-800-270-0810
ITEM NUMBER: 157310
SERIAL NUMBER: _____________

Questions and Answers

  • S
    Sean MannJul 30, 2025
    Why won't my North Star M157310AC.1 engine start?
    • J
      John HoffmanJul 30, 2025
      There are several reasons why your North Star Pressure Washer engine might not start: * **Low Oil:** Ensure the engine has an adequate amount of oil. * **Cold Engine:** Use the choke to start a cold engine. * **No Fuel:** Add gas to the fuel tank and ensure the fuel shutoff valve is open. * **Dead Battery:** Recharge or replace the battery. * **Spark Plug Wire:** Attach the spark plug wire to the spark plug.
  • T
    Tina EdwardsAug 3, 2025
    What to do if North Star M157310AC.1 Pressure Washer runs but has no pressure?
    • R
      Rebecca AdamsAug 3, 2025
      If your North Star Pressure Washer runs but isn't producing any pressure, it could be due to: * **A partially clogged or damaged nozzle:** Try cleaning or replacing the nozzle. * **Low water flow:** Ensure your water supply provides more than 4.8 gpm.
  • K
    Kerri SmithAug 7, 2025
    Why is the water not heating sufficiently in my North Star M157310AC.1 Pressure Washer?
    • M
      Megan MartinAug 8, 2025
      If the water in your North Star Pressure Washer isn't heating sufficiently, it might be due to: * **Scale build-up in coil:** See Coil Descaling under Maintenance Instructions. * **Coil full of soot:** See Coil Desooting under Maintenance Instructions.
  • J
    jacksondannyAug 11, 2025
    What to do if North Star M157310AC.1 Pressure Washer has poor or no detergent supply?
    • M
      mistywalkerAug 12, 2025
      If your North Star Pressure Washer isn't supplying detergent properly, consider the following: * **Soap Control Knob:** Adjust the soap control knob. * **Inadequate Detergent:** Refill the detergent container and ensure the chemical strainer is fully submerged. * **High Pressure Hose:** Use a shorter hose or move the machine closer to your work area. * **Clogged Components:** Clean the chemical strainer and injector. Always start with a clean detergent container and run clean water through the injector after each use.
  • V
    Vincent YoungAug 16, 2025
    Why does my North Star Pressure Washer run but the burner doesn’t fire?
    • E
      Elizabeth BrownAug 16, 2025
      If your North Star Pressure Washer runs, but the burner doesn't ignite, check these possible causes: * **Heat Switch:** Make sure the heat switch is turned ON. * **Thermostat Setting:** Set the thermostat to the desired temperature. * **Fuel Tank:** Fill the fuel tank with kerosene, diesel, or fuel oil. * **Defective Burner:** Call Customer Service.
  • A
    Austin SteinAug 20, 2025
    What to do if North Star M157310AC.1 surges or cycles while in bypass?
    • R
      Robin ClarkeAug 20, 2025
      If your North Star Pressure Washer surges or cycles while in bypass, the issue might be: * **Leak between unloader and gun:** Check all connections between the unloader and gun for leaks. Tighten any loose components and replace any damaged ones. * **Gun leaking internally:** Replace the spray gun.
  • R
    Ricardo HermanAug 25, 2025
    Why is there smoke coming from the heat exchanger of my North Star M157310AC.1?
    • P
      Perry LoganAug 26, 2025
      If you notice smoke coming from the heat exchanger of your North Star Pressure Washer, it could be due to: * **Air band adjustment:** Adjust the air band until the burner burns cleanly. See Installation Instructions. * **Poor quality fuel:** Use kerosene for the cleanest burn.

Summary

Special Hazards

Assembly and Initial Set-Up

Assembly

Instructions for assembling the pressure washer components, including wheels and handles.

Initial Pump & Engine Preparation

Steps to prepare the pump and engine by checking oil levels.

Battery Installation

Instructions for installing the 12-volt battery required for burner operation.

Before Each Use

Check Equipment

Verify pump oil, engine oil levels, and inspect the spray system for damage and leaks.

Add Fuel(s)

Instructions for safely filling the engine and burner fuel tanks.

Select Suitable Worksite

Criteria for choosing a safe outdoor location, considering ventilation and hazards.

Operation

Connect Hoses, Water Supply, and Spray Nozzle

Procedures for connecting hoses, water supply, and selecting the correct spray nozzle.

Spraying Procedure

Detailed procedures and safety rules for performing the actual spraying operation.

Storage

Maintenance and Repair

Troubleshooting

Summary of Important Safety Information

North Star M157310AC.1 Specifications

General IconGeneral
BrandNorth Star
ModelM157310AC.1
CategoryPressure Washer
LanguageEnglish

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