12kW Standby Generator - Generator BRIGGS & STRATTON - Free user manual and instructions

Product Type	Standby Generator
Brand	Briggs & Stratton
Model	040590 (12kW)
Power Output (Rated)	12,000 Watts (12 kW)
Surge Power	Not specified; capable of starting 5-ton AC
Voltage	240/120V Single Phase (typical)
Engine Type	Briggs & Stratton Vanguard 627 cc
Fuel Type	Natural Gas or Propane (LP)
Transfer Switch	Compatible with Symphony® Transfer Switches and Modules
Control System	Upgraded with multi-line LCD display, low idle mode, and AVR
Voltage Regulation (AVR)	± 1.0%
Battery Charger	3-Stage (bulk, absorption, float)
Enclosure Material	Galvanized Steel
Dimensions (Approx.)	48 x 25 x 30 inches (L x W x H)
Weight (Approx.)	350 lbs
Noise Level (Estimated)	67 dB at 23 ft
Warranty	5-Year Limited
External On/Off Switch	Located on back of enclosure
Optional Light Kit	Indicates unit status
Maintenance Requirements	Regular oil changes, air filter, spark plug, battery maintenance
Safety Features	Low oil shutdown, over-crank protection, automatic transfer
Spare Parts Availability	Through authorized Briggs & Stratton dealers

Frequently Asked Questions - 12kW Standby Generator BRIGGS & STRATTON

What fuel does the 12kW Standby Generator use?

The generator runs on natural gas or propane (LP). Conversion kits may be required for specific fuels.

How do I install the generator?

Installation must be performed by a licensed electrician and comply with local codes. A transfer switch is required for automatic operation.

How often should I service the generator?

Regular maintenance includes oil changes every 100 hours or annually, air filter replacement, spark plug check, and battery inspection. Refer to the manual for details.

What is the noise level of this generator?

Noise level is approximately 67 dB at 23 feet, similar to a quiet conversation. The low idle mode reduces noise during exercise.

How long is the warranty?

The generator comes with a 5-year limited warranty covering parts and labor for defects. Registration is required.

Can the generator start a central air conditioner?

Yes, it can start a 5-ton air conditioner due to its high motor starting capability.

Does it have an automatic transfer switch?

The generator is compatible with Symphony® Transfer Switches, which provide automatic load management.

What does the LCD display show?

The multi-line LCD displays status, alarms, maintenance alerts, and operational data like voltage and frequency.

How do I exercise the generator?

The generator has a programmable low idle mode for quieter exercise. It runs at reduced speed to save fuel and minimize wear.

Where can I find spare parts?

Spare parts are available through authorized Briggs & Stratton dealers and online retailers. Use the model number 040590.

USER MANUAL 12kW Standby Generator BRIGGS & STRATTON

Improved Performance with New Upgraded Controls and AVR\*.

All New Upgraded Control System

Upgraded control system with an LCD display featuring multi-line text graphics; it provides more data than ever. The system optimizes generator performance with tighter speed and voltage control while also having a low idle mode to save fuel and reduce noise while exercising.

Features:

• Upgraded Controls offers multi-line LCD display
• New AVR with superior voltage regulation at +/- 1.0%

• New 3-Stage Battery Charger (bulk, absorption, and float stage)

• Cleaner power with better frequency regulation

• Low Idle Mode for slower speed and quieter exercise - programmable; reduced exercise time requirement

• Increased motor starting capability 12kW ^1 - 37kVA and 20kW ^1 - 41kVA
  -12kW ^1 generator has a more efficient alternator; capable of starting a 5-ton air conditioner

• New Look. Lighter enclosure color

• External On/Off Switch located on back of enclosure
• External optional light kit indicates unit status
• Use these generators with Symphony® Transfer Switches and Modules for load management and improved efficiency

New 12, 17, & 20kW ^1 Briggs & Stratton Generators

Brand	Briggs & Stratton*	Briggs & Stratton*	Briggs & Stratton*	Briggs & Stratton*
Model #'s	040590	040610	040586	040588
Engine/CC Vanguard® 627 Vanguard® 993 Vanguard® 993 Vanguard® 993
kW1	12	17	20	20
Enclosure	Galvanized	Galvanized	Galvanized	Aluminum
Limited Warranty2	5 year	5 year	5 year	5 year

BRIGGS & STRATTON CORPORATION

POST OFFICE BOX 702

MILWAUKEE, WI 53201 USA

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