John Deere 120 Engine
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| Engine Detail | |
| Kohler K301AS | |
| gasoline | |
| 1-cylinder | |
| air-cooled horizontal-shaft | |
| Displacement | 476 cc 29.1 ci |
| Bore/Stroke | 3.38x3.25 inches 86 x 83 mm |
| Power (gross) | 12 hp 8.9 kW |
| Air cleaner | dry |
| Idle RPM | 1200-3800 |
| 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 | |
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| Email: Peter@TractorData.com | |
| Updated on June 17, 2025 |