Gravely 816 Engine
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| Engine options | |
| 16.5HP Onan 816cc 2-cyl gasoline | |
| 16HP Onan 716cc 2-cyl gasoline |
| Engine Detail | |
| Onan CCKA | |
| gasoline | |
| 2-cylinder | |
| air-cooled horizontal-shaft opposed-twin | |
| The CCKA was used for the first seven years of production on the 816, up until 1978. | |
| Displacement | 816 cc 49.80 ci |
| Bore/Stroke | 3.00x3.25 inches 76 x 83 mm |
| Power | 16.5 hp 12.3 kW |
| Rated RPM | 3600 |
| Starter | electric |
| Starter volts | 12 |
| Sparkplug gap | 0.025 inches 0.635 mm |
| Intake valve clearance | 0.011 inches 0.279 mm |
| Exhaust valve clearance | 0.011 inches 0.279 mm |
| Engine Oil | |
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| Oil capacity | 2 qts 1.9 L |
| Engine Detail | |
| Onan B43M | |
| gasoline | |
| 2-cylinder | |
| air-cooled | |
| The B43M was used on the Gravely 816 for the final production year, in 1978. | |
| Displacement | 716 cc 43.7 ci |
| Bore/Stroke | 3.25x2.62 inches 83 x 67 mm |
| Power | 16 hp 11.9 kW |
| Rated RPM | 3600 |
| Starter | electric |
| Starter volts | 12 |
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on August 13, 2021 |