Engine
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| Engine Detail | |
| Engine | Kohler CH20S |
| Fuel | gasoline |
| Cylinders | 2-cylinder |
| Cooling / layout | air-cooled horizontal-shaft V-Twin |
| Displacement | 624 cc 38.1 ci |
| Bore/Stroke | 3.03x2.64 inches 77 x 67 mm |
| Power (gross) | 20 hp 14.9 kW |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 2.1 qts 2.0 L |
| Sparkplug | Champion RC12YC |
| Sparkplug gap | 0.030 inches 0.762 mm |
| Toro 520xi Engine | |
| Photo credit | Image courtesy of Sorin Lungoci |
Values may vary by engine, transmission or configuration. View source page