| Engine Detail | |
| Briggs & Stratton 407777 | |
| gasoline | |
| 2-cylinder | |
| air-cooled vertical-shaft V-Twin | |
| Displacement | 656 cc 40.03 ci  | 
| Bore/Stroke | 2.97x2.89 inches 75 x 73 mm  | 
| Power (gross) | 21 hp 15.7 kW  | 
| Starter | electric | 
| Starter volts | 12 | 
| Sparkplug | Champion QC12YC | 
| Sparkplug gap | 0.040 inches 1.016 mm  | 
| Engine Oil | |
 
 | |
| Oil capacity | 2 qts 1.9 L  | 
| Page information | |
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| Email: Peter@TractorData.com | |
| Updated on May 22, 2023 |