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North Star M165938R - User Manual

North Star M165938R
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M165938R
Owner's Manual
Instructions for Installation/Set-up, Operation, Servicing, & Storage
Portable, Outdoor Use-Only, Triple Fuel Generator
6,600 Watt Continuous (8,000 Watt Surge) Capacity
Can be used to power individual appliances plugged directly into the generator's outlets, or as a back-up
connection to a building's power supply (via a professionally installed UL-approved transfer switch.
WARNING
READ and UNDERSTAND this manual completely before using the generator! Failure to properly set up,
operate, and maintain this generator could result in serious injury or death from carbon monoxide poisoning,
electric shock, fire/explosion, or burns. In particular, be aware of the following hazards:
CO Poisoning
Generators give off carbon monoxide, a poisonous gas that can kill you. You CANNOT smell it, see it, or taste it.
ONLY run generator OUTDOORS and AWAY from building air intakes. NEVER run generator inside any enclosed or
semi-enclosed spaces, including homes, basements, garages, sheds, boxes, RVs, boats or pick-up truck beds. These
spaces can trap poisonous gases, EVEN if you run a fan or open windows.
Carbon monoxide is given off whether you are using gasoline, natural gas, or propane to power the generator.
Install carbon monoxide alarms inside nearby structures/buildings (battery-operated, or plug-in with battery backup).
Electric shock / Electrocution
High voltage electricity from generator can kill. DO NOT operate in wet locations. Be sure generator is properly
grounded. Use only UL-listed, outdoor-rated grounded extension cords of proper size.
NEVER plug the generator directly into a wall outlet. ANY connection to a building's electrical system MUST
ISOLATE THE GENERATOR FROM UTILITY POWER via a UL-approved transfer switch installed by a licensed
electrician. Otherwise, back feed from the generator into the power grid could kill utility workers.
Fire / Explosion
DO NOT overload generator (per rated capacity), and OPERATE ONLY in an area with adequate cooling ventilation so
engine does not overheat. Exhaust can be extremely hot. Keep muffler at least 7' from all combustible objects.
All fuels are flammable. Never fuel a running or hot engine. Never pump fuel directly into generator at gas station use
approved container to transfer fuel. Ensure there are no fuel leaks, and keep sources of sparks and flames away.
LPG/NG hook-ups must be completed by a certified gas technician and comply with all federal and local requirements.
ALWAYS keep a fire extinguisher rated "ABC" nearby.
STOP!
CHOOSE THE RIGHT GENERATOR FOR YOUR NEEDS. See the "Power load Planning & Management" section
of this manual to determine your power load requirements and then compare to the generator's rated capacity.
INSPECT COMPONENTS: Closely inspect to make sure no components are missing or damaged. See the "Unpacking
& Delivery Inspection" section for instructions on whom to contact to report missing or damaged parts.
ARRANGE FOR PROFESSIONAL INSTALLATION of transfer switch and/or NG/LPG hook-ups, if they will be used.
See the "Installation/Initial Set-Up" section for more information about these requirements.
Any Questions, Comments, Problems, or Parts Orders
Call NorthStar Product Support 1-800-270-0810
ITEM NUMBER: 165938
SERIAL NUMBER: _____________
®

Questions and Answers

  • A
    Anthony LynchJul 30, 2025
    How to fix North Star Portable Generator when engine will not start?
    • F
      frank50Jul 30, 2025
      To troubleshoot why your North Star Portable Generator engine won't start, make sure to: * Fill the crankcase to the correct oil level. * Clean or replace the spark plug. * Fill the fuel tank. * Place the switch in the ON position. * Charge or replace the battery. * Position the switch to the correct fuel type (Gasoline or LP/NG).
  • R
    Robert LeeAug 3, 2025
    Why does my North Star M165938R engine lack power?
    • A
      Amanda ClaytonAug 3, 2025
      If your North Star Portable Generator engine lacks power or sputters, the generator could be overloaded. It is recommended to bring the generator to a qualified technician for adjustment.
  • M
    Mitchell KochAug 8, 2025
    What to do if North Star M165938R Portable Generator engine shuts down during operation?
    • B
      Blake StewartAug 8, 2025
      If your North Star Portable Generator shuts down during operation, the generator might be overloaded. In this case, reduce the load. Also, ensure there's at least 3 feet of clearance on all sides of the generator to provide sufficient ventilation.
  • J
    James DavisAug 12, 2025
    Why does the circuit breaker trip on my North Star Portable Generator?
    • R
      Rhonda MorenoAug 12, 2025
      If the circuit breaker trips on your North Star Portable Generator, it might be overloaded. Reduce the load on the generator. If the issue persists, take the generator to a qualified technician for adjustment.
  • K
    Kirsten LittleAug 16, 2025
    What to do if North Star M165938R has no output voltage?
    • B
      bartlettwhitneyAug 16, 2025
      If your North Star Portable Generator has no output voltage, first, disconnect any potentially defective load connected to the generator. If the problem continues, replace the receptacle. Also, make sure that generator is not overloaded and reduce the load if needed.
  • N
    Nathan LopezAug 20, 2025
    Why North Star M165938R engine sputters when switching from gasoline to LP or Natural Gas?
    • P
      Patty RussellAug 21, 2025
      If your North Star Portable Generator engine sputters when switching from gasoline to LP or Natural Gas, there might be several reasons: * The load block needs adjustment. * The battery is low, causing the engine to crank at a lower RPM, so recharge the battery. * The inlet fuel pressure is incorrect. It should be within 7"-11" water column, or 4-6 oz. * The engine choke lever is in the choke position; move it to the open position, as you should never choke the engine when operating on LP or NG fuel. * The fuel lock-off valve upstream of the generator set is turned off; open the valve.
  • B
    Beth PattersonAug 25, 2025
    What to do if North Star M165938R Portable Generator runs well on one source but not another?
    • A
      Amanda CooperAug 25, 2025
      If your North Star Portable Generator runs well on one source but not another, run the unit with the fuel switch in the NONE position for several seconds until the engine begins to hunt. Then, move the switch to the LP/NG position.

Summary

Hazard Signal Word Definitions

About Your Generator

Specifications

Safety Label Locations

Machine Component Identification

Reference Guide

Detailed explanations for each numbered component of the generator.

Power Load Planning & Management

Installation; Initial Set-Up

Unpacking & Delivery Inspection

Procedures for checking the generator upon arrival.

Planning the Power Load

Guidance on determining power needs to avoid overloading.

Gas Hook-up Installation

Instructions for connecting natural gas or propane fuel.

Set-up as Power Source

How to configure for portable or building backup use.

Select a Suitable Site

Criteria for choosing a safe and appropriate operating location.

Grounding the Generator

Steps to properly ground the generator for safety.

Battery Installation

Instructions for installing the starter battery.

Operation

General Safety Rules for Operation

Essential safety guidelines before operating the generator.

Preparing for Operation

Steps to get the generator ready before starting.

Starting the Engine

Procedures for starting the engine with different fuel types.

Checking Generator Output

How to verify voltage and frequency before connecting loads.

Connecting Loads

Guidance on connecting appliances safely to the generator.

Switching Fuels

How to switch between gasoline, LP, and NG while running.

Stopping the Engine

Steps to safely shut down the generator.

Storage & Exercise

Proper procedures for storing and maintaining the generator.

Maintenance & Repair

Safety, Engine, and Receptacle Checks

General service safety, engine upkeep, and receptacle inspection.

Fuel System, GFCI, and Cleaning Procedures

Inspecting fuel system, testing GFCI, and cleaning components.

Troubleshooting

Summary of Important Safety Information

General, Modifications, and Battery Safety

Core safety rules, modification prohibitions, and battery handling precautions.

Installation, Use, and Fuel Safety

Safety guidelines for setup, operation, fuel handling, and personal protection.

After Use and Maintenance Safety

Procedures for post-operation, storage, and maintenance safety.

Generator Exploded View

Wiring Diagram

Generator Head Exploded View

Limited Warranty

North Star M165938R Specifications

General IconGeneral
BrandNorth Star
ModelM165938R
CategoryPortable Generator
LanguageEnglish

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