Engine
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| Engine options | |
| Engine | 17HP Briggs & Stratton 502cc 1-cyl gasoline Briggs & Stratton 502cc 1-cyl gasoline |
| Engine Detail | |
| Engine | Briggs & Stratton 31F777 |
| Fuel | gasoline |
| Cylinders | 1-cylinder |
| Cooling / layout | air-cooled vertical-shaft |
| Notes | Original engine, the 31F777 was used on the XL 440 through the 2007 model year. |
| Displacement | 502 cc 30.63 ci |
| Bore/Stroke | 3.56x3.062 inches 90 x 78 mm |
| Power (gross) | 17 hp 12.7 kW |
| Air cleaner | foam and paper elements |
| Starter volts | 12 |
| Sparkplug | Cmapion QC12YC |
| Sparkplug gap | 0.030 inches 0.762 mm |
| Engine Oil | |
| Oil capacity | 1.75 qts 1.7 L |
| Engine Detail | |
| Engine | Briggs & Stratton 31P777 |
| Fuel | gasoline |
| Cylinders | 1-cylinder |
| Cooling / layout | air-cooled vertical-shaft |
| Engine application | The Briggs & Stratton 31P777 was used on the XL 440 starting with the 2008 model year, tractor serial number 280000001. |
| Displacement | 502 cc 30.63 ci |
| Bore/Stroke | 3.56x3.062 inches 90 x 78 mm |
| Air cleaner | foam and paper elements |
| Starter volts | 12 |
Values may vary by engine, transmission or configuration. View source page