Engine
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| Engine Detail | |
| Engine | Briggs & Stratton 407577 |
| Fuel | gasoline |
| Cylinders | 2-cylinder |
| Cooling / layout | air-cooled vertical-shaft V-Twin |
| Displacement | 656 cc 40.03 ci |
| Bore/Stroke | 2.97x2.89 inches 75 x 73 mm |
| Power | 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 |
| Oil change | 50 h |
| Craftsman 917.27404 Engine | |
| Photo credit | Image courtesy of Jimmy Bristow |
Values may vary by engine, transmission or configuration. View source page