Description
| Dry Weight (kg) | 31.7 kg |
| Fuel Tank Capacity (L) | 6.1 Liter |
| Compression ratio | 8.2 : 1 |
| Bore X Stroke (mm) | 88 x 64 mm |
| Dimensions L x W x H (mm) | 406 x 460 x 448 mm |
| Net Power kW(hp)@rpm | 8.7 kW ( 11.7 HP ) / 3600 rpm |
| Cont. rated power kW(hp)@rpm | 6.4 kW ( 8.6 HP ) / 3000 rpm, 7.0 kW ( 9.4 HP ) / 3600 rpm |
| Fuel cons. at cont. rated power (L/h @ rpm) | 3.5 L/h – 3600 rpm |
| Cylinder sleeve type | Cast iron sleeve |
| Ignition System | Digital CDI with variable ignition timing |
| Engine Oil Capacity (L) | 1.1 Liter |
| Starting System | Recoil (el. start optional) |
| Description Code | 4-stroke single cylinder, OHV petrol engine, 25° inclined cylinder, Horizontal shaft |
Key Features
- Powerful Performance
The GX390 offers 8.7 kW (10.7 hp) net power @ 3600 rpm, providing the strength needed for intensive operations.
- OHV Design for Enhanced Efficiency
The Overhead Valve (OHV) design improves combustion efficiency and ensures a high power-to-displacement ratio, delivering more power with reduced emissions.
- Easy Starting Mechanism
Equipped with an automatic decompression system and an ergonomic soft recoil starter handle, the GX390 offers smooth and reliable starting, even in tough conditions.
- Durable and Long-Lasting
Manufactured with high-quality materials and components designed for long-term use, the GX390 ensures superior durability in the most demanding environments.
- Environmentally Friendly
The GX390 meets world-class environmental standards, offering low emissions and ensuring compliance with the strictest regulations.
- Efficient Fuel and Oil Consumption
The engine’s low fuel and oil consumption reduces operating costs, making it a cost-effective solution for a wide range of applications.
- Reduced Vibration and Noise
Engineered to minimize vibration and noise levels, it provides a more comfortable and quiet operation for the user, ideal for extended work periods.
Applications of the Honda GX390
Concrete Cutter
The Honda GX390 is extensively used in concrete cutting machines, which are essential for construction projects. With its high power output and robust design, the GX390 can handle the demanding tasks of cutting through thick concrete and hard surfaces with precision and ease.
The OHV design enhances fuel efficiency, allowing for longer operation without the need for frequent refueling, making it ideal for large-scale projects. Its easy-start system ensures reliable performance, even after extended use, and its reduced vibration enhances control and accuracy while cutting, leading to smoother and more precise results.





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