| Engine Detail | |
| Kohler CH20S | |
| gasoline | |
| 2-cylinder | |
| 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 | |
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| Image courtesy of Sorin Lungoci | 
| Page information | |
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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on December 2, 2020 |