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Powerhorse M166112B - User Manual

Powerhorse M166112B
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Owner’s Manual
Instructions for Installation/Set-up, Operation, Servicing, & Storage
Portable, Outdoor Use-Only, Gasoline Generator
166112 - 3100 Watt Continuous (4000 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.
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 feet 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.
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 a transfer switch if you will be connecting the generator to
your building’s electrical system. See the “Installation/Initial Set-Up” section for more information about this
requirement.
Any Questions, Comments, Problems, or Parts Orders
Call Powerhorse Product Support 1-866-443-2576
M
166112
B
ITEM NUMBER: 166112
SERIAL NUMBER:
_______________

Table of Contents

Questions and Answers

  • S
    Sara LawsonAug 11, 2025
    How to start a Powerhorse M166112B Portable Generator if the engine won't start?
    • N
      Nathaniel StephensAug 11, 2025
      If your Powerhorse Portable Generator's engine won't start, there are several possible causes. First, check the oil level and fill the crankcase to the proper level if the voltage is too low. Also, make sure the fuel tank is full. Clean or replace the spark plug. Finally, ensure the engine switch is in the ON position.
  • D
    Diane ReidAug 17, 2025
    Why does my Powerhorse Portable Generator engine shut down during operation?
    • C
      clarkshaneAug 18, 2025
      If the Powerhorse Portable Generator engine shuts down during operation, it could be due to the generator being overloaded. Reduce the load to resolve this. Another possible cause is insufficient ventilation. Ensure there is at least 7 feet of clearance on all sides of the generator.
  • N
    Noah WilliamsAug 23, 2025
    What to do if my Powerhorse M166112B Portable Generator is overheating?
    • P
      pateledgarAug 23, 2025
      If your Powerhorse Portable Generator is overheating, it could be due to the engine speed being too slow or the generator being overloaded. Reduce the load on the generator. If the engine speed is too slow, bring the generator to a qualified technician for adjustment.
  • A
    Ashley TaylorAug 29, 2025
    Why is there no output voltage from my Powerhorse M166112B Portable Generator?
    • S
      Scott BlairAug 29, 2025
      If there is no output voltage from your Powerhorse Portable Generator, it could be due to a defective load connected to the generator. Disconnect the load. Another cause could be a defective receptacle. Replace the receptacle. The generator might also be overloaded. Reduce the load.
  • U
    uhicksSep 4, 2025
    What happens if my Powerhorse Portable Generator is overloaded?
    • A
      Amy PonceSep 4, 2025
      If your Powerhorse Portable Generator is overloaded, disconnect the defective load connected to the generator. Reset the circuit breaker and reduce the loads connected to the generator. It may also be necessary to have a qualified technician repair the generator.

Powerhorse M166112B Specifications

General IconGeneral
BrandPowerhorse
ModelM166112B
CategoryPortable Generator
LanguageEnglish

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