| Engine Detail | |
| Honda GX640 | |
| gasoline | |
| 2-cylinder | |
| liquid-cooled horizontal-shaft | |
| Displacement | 634 cc 38.7 ci |
| Bore/Stroke | 3.00x2.80 inches 76 x 71 mm |
| Power | 18 hp 13.4 kW |
| Starter | electric |
| Starter volts | 12 |
| Coolant capacity | 2.9 qts 2.7 L |
| Sparkplug | BPR5ES-11 |
|   | RN12YC |
| Sparkplug gap | 0.040 inches 1.016 mm |
| Engine Oil | |
| |
| Oil capacity | 2.1 qts 2.0 L |
| Honda H4518 Engine | |
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| Image courtesy of Sorin Lungoci |
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on October 7, 2020 |