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NorthStar MPPWE - User Manual

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Proven Performance
K-BAR Industries, Faribault, MN, 55021
MPPWE
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
Engine Oil Engine is shipped without oil. Fill before starting.
Use SAE 10W-30 motor oil.
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.
Add fuel stabilizer to the fuel tank before long term storage.
Spraying
Chemicals
Use any North Star brand or equivalent pressure washer chemicals.
Couple the chemical injector to the pump outlet. Use black nozzle.
Maintenance
Schedule
Engine: Oil: change after first 20 hours, then annually or every 100 hours.
Spark Plug: clean every 100 hrs., replace annually or every 300 hrs.
Air Filter: clean every 100 hours, replace annually or every 300 hrs.
Cat Pump: Oil: change after first 50 hours, then every 3 months or 500 hours.
General Pump: Oil: change after first 40 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:
Engine Model:
Pump Model:
Flow:
Pressure:
Hose Length:
Lance Length:
Nozzle Size:

Questions and Answers

  • J
    Jeff NovakAug 1, 2025
    Why is my NorthStar MPPWE pressure low?
    • C
      Caitlin CarrilloAug 1, 2025
      If you're experiencing low or surging pressure with your NorthStar Pressure Washer, consider the following: 1. Ensure you have sufficient water flow and check for any kinks or pinches in the hose. 2. Inspect and carefully clean the inlet screen if it's plugged. 3. Switch to the green nozzle for high pressure. 4. Check the nozzle for blockage and remove any debris. 5. Replace the nozzle if it's worn. 6. Look for and fix any leaks in the high-pressure line.
  • D
    Danielle RiggsAug 11, 2025
    What to do if NorthStar MPPWE is not injecting chemicals?
    • G
      Gregory GonzalezAug 11, 2025
      If your NorthStar Pressure Washer is not injecting chemicals, try these solutions: * Ensure the adjustment knob is not turned OFF by rotating it counter-clockwise. * Switch to the black nozzle. * If using an extra-long hose, try a shorter one to reduce back pressure. * Check the clear chemical hose for leaks and replace it, using hose clamps if needed. * Make sure the chemical strainer is fully submerged in the solution.
  • H
    Helen JeffersonAug 19, 2025
    Why does my NorthStar MPPWE Pressure Washer engine stop when I pull the trigger?
    • A
      Allen MartinAug 20, 2025
      If the engine of your NorthStar Pressure Washer stops when the trigger is pulled, it may be due to an insufficient water supply. Connect the pressure washer to a water supply with more water flow.

Summary

Important Safety Instructions

Installation Instructions

Assembly Instructions

Pump Preparation

Engine Preparation

Operating Instructions

Check Your Water Supply

Crucial checks for water supply to ensure proper pump function and prevent damage.

Applying Chemicals

Start Engine

Adjust Pressure

Shut-Down Instructions

Safety Features

Maintenance Instructions

Changing The Pump Oil (Cat)

Changing The Pump Oil (General)

Long Term Storage

Troubleshooting

ENGINE WILL NOT START

Solutions for issues preventing the engine from starting.

ENGINE STOPS WHEN TRIGGER IS PULLED

Reasons and fixes for the engine stopping unexpectedly.

LOW;SURGING PRESSURE

Troubleshooting steps for inconsistent or low water pressure.

Parts Breakdown

General Pump TP2530 J34 - Triplex Parts

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2 SFX30 GZ Pump Parts Breakdown

5 DX40 G1 Pump Parts Breakdown

4 SF40 GS1 Pump Parts Breakdown

NorthStar MPPWE Specifications

General IconGeneral
BrandNorthStar
ModelMPPWE
CategoryPressure Washer
LanguageEnglish

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