J.I. Case 644 Engine
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| Engine Detail | |
| Kohler K321 | |
| gasoline | |
| 1-cylinder | |
| air-cooled horizontal-shaft | |
| Displacement | 31.27 ci 0.5 L |
| Bore/Stroke | 3.50x3.25 inches 89 x 83 mm |
| Power | 14 hp 10.4 kW |
| Compression | 6:1 |
| Rated RPM | 3600 |
| Starter | electric |
| Starter volts | 12 |
| Sparkplug gap | 0.025 inches 0.635 mm |
| Point gap | 0.020 inches 0.508 mm |
| Intake valve clearance | 0.010 inches*Cold 0.254 mm |
| Exhaust valve clearance | 0.020 inches*Cold 0.508 mm |
| Engine Oil | |
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| Oil capacity | 1.5 qts 1.4 L |
| Oil change | 25 h |
| Page information | |
| Contact: Peter Easterlund | |
| Updated on June 21, 2022 | |
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