Engine
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| Engine options | |
| Engine | 16HP Onan 709cc 2-cyl gasoline 18HP Onan 781cc 2-cyl gasoline |
| Engine Detail | |
| Engine | Onan B43E |
| Fuel | gasoline |
| Cylinders | 2-cylinder |
| Cooling / layout | air-cooled horizontal-shaft opposed twin |
| Engine application | The B43E was used from serial number until 1987, tractor serial number 420000. |
| Displacement | 709 cc 43.3 ci |
| Bore/Stroke | 3.25x2.62 inches 83 x 67 mm |
| Power (gross) | 16 hp 11.9 kW |
| Air cleaner | foam and paper |
| Idle RPM | 1350-3450 |
| Starter volts | 12 |
| Oil capacity | 1.7 qts 1.6 L |
| Engine Detail | |
| Engine | Onan P218G |
| Fuel | gasoline |
| Cylinders | 2-cylinder |
| Cooling / layout | air-cooled horizontal-shaft opposed twin |
| Engine application | The Onan P218 was used on the 316 from 1987 (tractor serial number 420001) to the end of production. |
| Displacement | 781 cc 47.7 ci |
| Bore/Stroke | 3.25x2.88 inches 83 x 73 mm |
| Power (gross) | 18 hp 13.4 kW |
| Idle RPM | 1350-3450 |
| Sparkplug | NGK BPR5EFS
Champion RS14YC
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Values may vary by engine, transmission or configuration. View source page