| Engine Detail | |
| Briggs & Stratton 31G777 | |
| gasoline | |
| 1-cylinder | |
| air-cooled vertical-shaft | |
| Displacement | 499 cc 30.5 ci | 
| Bore/Stroke | 3.57x3.06 inches 91 x 78 mm | 
| Power (gross) | 17.5 hp 13.0 kW | 
| Air cleaner | dry | 
| Starter | electric | 
| Starter volts | 12 | 
| Sparkplug gap | 0.030 inches 0.762 mm | 
| Intake valve clearance | 0.004 inches 0.102 mm | 
| Exhaust valve clearance | 0.006 inches 0.152 mm | 
| Engine Oil | |
|   | |
| Oil capacity | 1.5 qts 1.4 L | 
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on April 19, 2023 |