Engine
Scroll tables horizontally to view every column.
| Engine Detail | |
| Engine | Onan B48G |
| Fuel | gasoline |
| Cylinders | 2-cylinder |
| Cooling / layout | air-cooled horizontal-shaft opposed-twin |
| Notes | The B48G was the original engine on the Deere 420, used through the 1986 model year. |
| Displacement | 781 cc 47.7 ci |
| Bore/Stroke | 3.25x2.875 inches 83 x 73 mm |
| Power (gross) | 20 hp 14.9 kW |
| Air cleaner | foam and paper |
| Compression | 7.0:1 |
| Rated RPM | 3500 |
| Idle RPM | 1000-3450 |
| Starter volts | 12 |
| Engine Oil | |
| Oil capacity | 1.75 qts 1.7 L |
| Engine Detail | |
| Engine | Onan P220G |
| Fuel | gasoline |
| Cylinders | 2-cylinder |
| Cooling / layout | air-cooled horizontal-shaft opposed-twin |
| Notes | The P220G replaced the B48G in the John Deere 420 during the 1987 model year, starting at tractor serial number 420001. |
| Displacement | 781 cc 47.7 ci |
| Bore/Stroke | 3.2580x2.875 inches 83 x 73 mm |
| Power | 20 hp 14.9 kW |
| Rated RPM | 3600 |
| Starter volts | 12 |
| Oil capacity | 1.75 qts 1.7 L |
| Sparkplug | NGK BPR5EFS
Champion RS14YC
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| John Deere 420 Engine | |
| Photo credit | Image courtesy of Terry Russell |
Values may vary by engine, transmission or configuration. View source page