| Note: the Toro model 310 is the same as the Wheel Horse 310-8. The following data is from the 310-8 listing. | 
| Engine Detail | |
| Kohler K241S | |
| gasoline | |
| 1-cylinder | |
| air-cooled | |
| Original engine. The K241 was used on the Wheel Horse 310-8 through the 1986 model year. | |
| Displacement | 390 cc 23.85 ci | 
| Bore/Stroke | 3.25x2.875 inches 83 x 73 mm | 
| Power | 10 hp 7.5 kW | 
| Rated RPM | 3600 | 
| Starter volts | 12 | 
| Engine Detail | |
| Kohler M10S | |
| gasoline | |
| 1-cylinder | |
| air-cooled | |
| The Kohler M10S replaced the K241 on the Wheel Horse 310-8 starting with the 1987 model year, tractor model code 21-10K804. | |
| Displacement | 390 cc 23.85 ci | 
| Bore/Stroke | 3.25x2.875 inches 83 x 73 mm | 
| Power | 10 hp 7.5 kW | 
| Compression | 6.2:1 | 
| Rated RPM | 3600 | 
| Starter volts | 12 | 
| Sparkplug | Champion RH10 | 
| Sparkplug gap | 0.025 inches 0.635 mm | 
| Engine Oil | |
|   | |
| Oil capacity | 2.5 qts 2.4 L | 
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on September 29, 2020 |