Waukesha
Waukesha UM
Early Historical Waukesha Model Series
Waukesha UM discontinued early historical engine model series. The Waukesha Engine Historical Society production table lists this model series from 1931 to 1936; 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.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-12
- Package route
- gas generator sets
- Cylinders
- L4
- Rated Speed
- 1,500 RPM
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Waukesha UM overhaul & repair parts
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Waukesha UM generator set context
The Waukesha UM 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 | UM |
| 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 1936 |
| Certifications | Waukesha Engine Historical Society production table, Waukesha Engine Historical Society model-designation guide |
| Country of Origin | United States |
| Year Introduced | 1931 |
| Year Discontinued | 1936 |
Frequently asked questions
What fuel does the Waukesha UM use?
The Waukesha UM is a Gasoline generator-set engine.
What is the cylinder configuration of the UM?
The Waukesha UM is an inline-4 (4-cylinder) engine.
What emissions information is listed for the UM?
This record lists Historical production ended 1936 for the Waukesha UM. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
Is the UM still in production?
No — the Waukesha UM is discontinued (production ended around 1936). Its specifications and datasheets remain archived here for reference.
Are reference documents available for the UM?
This page links reference documents for the Waukesha UM. Check each document's title, model coverage, revision and rating conditions before using it for selection.