20kW Standby Generator - Generator BRIGGS & STRATTON - Free user manual and instructions

Product Type	Standby Generator
Brand	Briggs & Stratton
Model	20kW (040586 / 040588)
Engine	Vanguard 993 cc
Rated Power (kW)	20 kW
Voltage Regulation	±1.0% (AVR)
Control System	Upgraded with multi-line LCD display
Battery Charger	3-stage (bulk, absorption, float)
Low Idle Mode	Programmable for quieter exercise and fuel savings
Motor Starting Capability	Up to 41 kVA (increased capacity)
Enclosure Material	Galvanized steel or aluminum (model dependent)
External Switch	On/Off switch on back of enclosure
Optional Light Kit	Indicates unit status
Compatibility	Symphony® Transfer Switches and Modules
Limited Warranty	5 years
Dimensions (L x W x H)	Approx. 48 x 30 x 30 inches
Weight	Approx. 450 lbs
Fuel Type	Natural gas or liquid propane
Noise Level	Approx. 69 dBA at 23 ft
Exercise Cycle	Programmable, low idle mode for quieter operation

Frequently Asked Questions - 20kW Standby Generator BRIGGS & STRATTON

What fuel does the 20kW standby generator use?

The generator is designed to run on natural gas or liquid propane. Consult the manual for proper connection and fuel pressure requirements.

How often should I exercise the generator?

Briggs & Stratton recommends exercising the generator for 20 minutes once a week under load. The low idle mode can be programmed to reduce noise and fuel consumption during exercise.

What is the warranty period?

The generator comes with a 5-year limited warranty. Coverage details are in the owner's manual.

Can this generator start a 5-ton air conditioner?

Yes, the 20kW model has increased motor starting capability (up to 41 kVA) and can start a 5-ton AC unit.

What maintenance is required?

Regular maintenance includes oil changes every 100 hours, air filter cleaning/replacement, spark plug replacement, and battery inspection. Refer to the manual for a complete schedule.

Is the generator compatible with solar or other backup systems?

The generator works with Symphony® Transfer Switches and modules for load management. It can be integrated with other systems but consult a professional installer.

What does the LCD display show?

The multi-line LCD display provides system status, voltage, frequency, runtime, and alarm messages. It also shows menu options for configuring settings.

How do I change the battery?

Locate the battery compartment, disconnect the negative terminal, remove the battery, and install a new 12V battery of the same group size. Ensure correct polarity.

What is the noise level of this generator?

The noise level is approximately 69 dBA at 23 feet under normal load. Low idle mode reduces noise further during exercise.

Where is the serial number located?

The serial number is on a label attached to the enclosure, typically near the control panel or on the side. It is needed for warranty claims and support.

USER MANUAL 20kW 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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