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Black Max BM905500 - User Manual

Black Max BM905500
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SAVE THIS MANUAL FOR
FUTURE REFERENCE
WARNING: To reduce the risk of injury, the user must
read and understand the operator’s manual before using this
product.
ADVERTENCIA: Para reducir el riesgo de lesiones, el
usuario debe leer y comprender el manual del operador antes
de usar este producto.
TABLE OF CONTENTS
Important Safety Instructions ...............................................3-4
Specific Safety Rules .............................................................. 4
Symbols ...............................................................................5-7
Electrical ..............................................................................8-9
Features ................................................................................10
Assembly .........................................................................11-12
Operation .........................................................................12-15
Maintenance ....................................................................15-18
Troubleshooting .................................................................... 19
Parts Ordering/Service .............................................Back Page
ÍNDICE DE CONTENIDO
Instrucciones de seguridad importantes .............................. 3-4
Reglas de seguridad específicas .............................................4
Símbolos .............................................................................. 5-7
Aspectos eléctricos .............................................................. 8-9
Características .......................................................................10
Armado ............................................................................. 11-12
Funcionamiento ................................................................ 12-15
Mantenimiento .................................................................. 15-19
Corrección de problemas .......................................................20
Pedidos de piezas/servicio .................................Pág. posterior
GUARDE ESTE MANUAL
PARA FUTURAS CONSULTAS
OPERATOR’S MANUAL
Manual del operador
5,500 WATT GENERATOR
Generador de 5 500 W
BM905500
R
CUSTOMER SERVICE
1-800-726-5760
To register your Black Max product,
please visit:
http://register.blackmaxtools.com/
Mexico SERVICIO AL CLIENTE
01 800 843 1111
Para registrar su producto de
BlackMax, por favor visita:
http://register.blackmaxtools.com/
NEUTRAL BONDED TO FRAME
PUNTO NEUTRO CONECTADO AL MARCO
NOTICE AVISO
Do not use E15 or E85 fuel in
this product. It is a violation of
federal law and will damage
the unit and void your warranty. Only use unleaded gasoline
containing up to 10% ethanol.
No utilice combustibles E15 o E85 con este producto. Esto
constituye una violación a la ley federal, dañará la unidad
y anulará la garantía. Use únicamente gasolina sin plomo
con un contenido de hasta 10 % de etanol.
RUN
START
CHOKE

Questions and Answers

  • D
    dwallaceAug 3, 2025
    What to do if AC receptacle does not work on Black Max Portable Generator?
    • J
      Joann JohnsonAug 3, 2025
      If the AC receptacle on your Black Max Portable Generator isn't working, check a few things. First, reset the AC circuit breaker. If that doesn't work, reset the GFCI. Finally, the item you're plugging in might be defective, so try a different one.
  • J
    Jamie CastroAug 10, 2025
    Why does my Black Max BM905500 engine lack power?
    • R
      robertsondouglasAug 10, 2025
      If your Black Max Portable Generator engine lacks power, the air filter element might be clogged; clean or replace it as needed. Another possible cause is old or bad gasoline; in this case, drain the fuel and carburetor, then refuel with fresh gasoline.
  • A
    amythompsonAug 18, 2025
    How to fix a Black Max BM905500 that is hard to start?
    • M
      martinezdavidAug 18, 2025
      If your Black Max Portable Generator is hard to start, it could be due to water in the gasoline. Drain the entire system and refill with fresh fuel. Another possibility is a weak spark at the spark plug, which may require replacing the spark plug.
  • M
    Molly CrawfordAug 26, 2025
    Why is my Black Max BM905500 Portable Generator making a knocking noise?
    • U
      umccarthyAug 26, 2025
      An occasional light knocking or pinging under heavy load is usually not a concern. However, if the knocking or pinging occurs under normal load at a steady engine speed, try switching to a different brand of gasoline with an octane rating of 86 or higher.

Summary

Customer Service and Registration

Fuel Usage Warning

Warning about using E15 or E85 fuel, recommending only unleaded gasoline up to 10% ethanol.

Generator Placement and Carbon Monoxide Safety

Grounding the Generator

Important Safety Instructions

Carbon Monoxide Danger

Warns about the lethal danger of carbon monoxide from generator exhaust.

Specific Safety Rules

Critical Hazard Warnings

Addresses fire, burn, electrical shock hazards, and restrictions on medical equipment use.

Safety Labels on the Generator

General Safety Label Warnings

Highlights critical warnings from labels regarding injury, fire, electric shock, and carbon monoxide.

Carbon Monoxide and Location Safety Labels

Details safety labels concerning carbon monoxide and correct generator placement.

Product Warnings and Information

Fuel and Lubricant Safety

Covers warnings for fueling and engine lubricant to prevent fire and engine damage.

Grounding and Heat Hazards

Addresses grounding requirements and the danger of hot surfaces and exhaust gases.

Generator Capacity Management

Overload Prevention Notice

Warns against overloading the generator to prevent damage to the unit and connected devices.

Generator Features and Specifications

Product Specifications Overview

Lists key technical specifications including engine, generator output, voltage, and amperage.

Operation Guidelines

Carbon Monoxide and Grounding Safety

Covers CO hazards during operation and the importance of proper grounding.

Operation Preparation and Fueling

Pre-Operation Requirements

Covers mandatory outdoor use, flat surface placement, and special local regulations.

Fueling and Lubricant Recommendations

Provides guidance on using fuel stabilizer, correct lubricant type, and ethanol fuel restrictions.

Generator Operation Procedures

Adding Fuel Safely

Covers detailed steps and warnings for adding fuel to prevent fire and injury.

Engine Starting and Stopping

Explains the procedures for starting the engine and stopping it normally or in an emergency.

Routine Maintenance Procedures

Engine Lubricant and Spark Plug Service

Covers changing engine lubricant and maintaining the spark plug for optimal performance.

Troubleshooting Common Issues

Service and Parts Information

Black Max BM905500 Specifications

General IconGeneral
Rated Watts5500
Starting Watts6875
Fuel Tank Capacity6.6 Gallons
Run Time at 50% Load12 Hours
Engine Type4-Stroke OHV
Starting SystemRecoil
AC Output120/240V
Outlet TypeFour 120V 20A Outlets, One 120/240V Twist-Lock Outlet

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