Onan Engines
(SOURCE: Some of the data is from “Small Engines Service Manual”)
Listed below are the various models of the Onan engines and some data regarding them.
| Model | Type of Machine Used on | Cylinders | Bore | Stroke | Horse Power | Displacement | Spark Plug Gap |
|---|---|---|---|---|---|---|---|
| AJ | Generator | 1 | 2.75″ | 2 1/2″ | 5.5 | 14.9″ | 0.025 |
| AK | Generator | 1 | 2.5″ | 2 1/2″ | 12.2″ | 0.025 | |
| BF | Generator | 2 | 3.125″ | 2.625″ | 8.5 | 40.25″ | 0.025 |
| BFA | Generator | 2 | 3.25″ | 2.625″ | 8.5 | 43.3″ | 0.025 |
| BGA | Generator | 2 | 3.25″ | 2.625″ | 10 | 43.3″ | 0.025 |
| CCK | Generator | 2 | 3.25″ | 2.87″ | 10 | 49.8″ | 0.025 |
| LK | Generator | 1 | 3.5″ | 3.0″ | 5 | 24.9″ | 0.025 |
| NH | Generator | 2 | 3.25″ | 3.0″ | 14 | 60.0″ | 0.025 |
CARBURETOR DATA: The models AJ and AK engines use the Carter model N carburetor; gasoline was the fuel source. These engines could be equipped for natural or LP gas as fuel source.
SPARK PLUG DATA: * When using LP or natural gas asa fuel the plug gap should be set at 0.018.
