| Engine Detail | |
| Onan BF-MS | |
| gasoline | |
| 2-cylinder | |
| air-cooled Horizontal-shaft opposed twin | |
| Displacement | 659 cc 40.25 ci |
| Bore/Stroke | 3.125x2.625 inches 79 x 67 mm |
| Power (gross) | 16 hp 11.9 kW |
| Air cleaner | paper element (B140-1216) |
| Rated RPM | 3600 |
| Starter | electric |
| Starter volts | 12 |
| Sparkplug | Champion H8 |
| Sparkplug gap | 0.025 inches 0.635 mm |
| Point gap | 0.020 inches 0.508 mm |
| Engine Oil | |
| |
| Oil capacity | 2 qts 1.9 L |
| Oil change | 50 h |
| Page information | |
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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on April 6, 2023 |