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- Honda GX390 - Petrol engine 8.7 kW, horizontal shaft
Honda GX390 - Petrol engine 8.7 kW, horizontal shaft

Honda GX390 is a single-cylinder 4-stroke OHV petrol engine with a horizontal shaft and a cast iron cylinder sleeve. A common power source for hydraulic power units and pump drives.
- Displacement 389 cm³
- Max. power 8.7 kW (11.7 hp) / 3600 rpm, continuous power 7.0 kW / 3600 rpm
- Max. torque 26.5 Nm / 2500 rpm
- Shaft 25 mm or 25.4 mm (1"), recoil or electric start
- Fuel tank 6.1 l, consumption 3.5 l/h at continuous power
- Dimensions 406 × 460 × 448 mm, weight 31.7 kg
- The engine is delivered without engine oil (oil capacity 1.1 l)
- Ready GX390 power units with pump are on the power unit page
| Code | Model | Combustion engine shaft (mm) | Factory code | Package size (KPL) |
|---|---|---|---|---|
| 93-GX390UT2XSXQ4OH | Recoil start | 25 | GX390UT2X-SXQ4-OH | 1 |
| 93-GX390UT2XSTC4OH | Electric start | 25 | GX390UT2X-STC4-OH | 1 |
| 93-GX390UT2QXB9OH | Recoil start | 25,4 | GX390UT2-QXB9-OH | 1 |
| 93-GX390UT2XQXB9OH | Recoil start | 25,4 | GX390UT2X-QXB9-OH | 1 |
| 93-GX390UT2XQXE4OH | Electric start, 1 A charge coil | 25,4 | GX390UT2X-QXE4-OH | 1 |
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