Waukesha
Waukesha JL
Early Historical Waukesha Model Series
Waukesha JL discontinued early historical engine model series. The Waukesha Engine Historical Society production table lists this model series from 1926 to 1937; its model-designation guide explains the early letter, six-cylinder, and F-head naming schemes used by these rows. This supports a source-validated legacy page for owners searching parts, service, restoration, and overhaul information.
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- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-12
- Package route
- gas generator sets
- Cylinders
- L4
- Rated Speed
- 1,500 RPM
Waukesha JL generator set context
The Waukesha JL is listed here as a gasoline generator-drive engine for 50 Hz generator sets. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | Waukesha |
| Model | JL |
| Series | Early Historical Waukesha Model Series |
| Configuration | Inline-4 gasoline engine model series |
| Cylinders | 4 |
| Fuel Type | Gasoline |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Historical production ended 1937 |
| Certifications | Waukesha Engine Historical Society production table, Waukesha Engine Historical Society model-designation guide |
| Country of Origin | United States |
| Year Introduced | 1926 |
| Year Discontinued | 1937 |
Frequently asked questions
What fuel does the Waukesha JL use?
The Waukesha JL is a Gasoline generator-set engine.
What is the cylinder configuration of the JL?
The Waukesha JL is an inline-4 (4-cylinder) engine.
What emissions standard does the JL meet?
The Waukesha JL is certified to Historical production ended 1937 emissions standards.
Is the JL still in production?
No — the Waukesha JL is discontinued (production ended around 1937). Its specifications and datasheets remain archived here for reference.
Is a datasheet available for the JL?
Yes — an official Waukesha datasheet for the Waukesha JL can be downloaded from this page.