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- Maximum power: 11.7 hp
- Cubic Capacity: 389 cm³
- Maximum Power Speed (rpm): 3600 rpm
- Max. torque: 26.5 Nm (2.7 kgfm) @ 2500 rpm
- Engine model: GX390UT2-VX-E9-OH
- Cylinder number: 1
- Camshaft / Valves: OHV
- Shaft type: Japanese tapered
- Shaft diameter: 22.20 mm
- Fuel used: Unleaded
- Fuel tank capacity: 6.1 L
- Air cleaner: Low noise
- Oil tank capacity: 1.1 L
- Low oil level protection: Oil Alert
- Fuel consumption: 3.5 L/h @ 3600 rpm
- Start-Up: Electric
- Cooling system: Air Cooled
- Power Supply: Petrol-Powered
- Weight: 31.7 kg
- Size: 406 x 460 x 448 mm
The GX390 engine (GX 390 UT2-VX-E9-OH) is suitable for a wide range of heavy duty applications such as construction equipment, generators, welders, pumps and other industrial applications.
• Single cylinder with 25° inclination, air-cooled, 4-stroke, internal combustion petrol engine (389 cc).
• Designed with overhead valves (OHV) for improved combustion efficiency.
• It has a reinforced cast iron cylinder as well as a redesigned and lighter piston for less vibration.
• With magneto ignition system with transistor and horizontal carburetor with butterfly valve.
• Easy electric start and automatic decompression system with automatic return rope.
• High power to displacement ratio.
• Its net power is 11.7 HP (8.7 kW) at 3,600 rpm.
• Maximum net torque is 26.5 Nm (2.7 kgfm) of torque at 2,500 rpm.
• Low fuel and oil consumption.
• With an oil alert system (Oil Alert), which is designed to prevent damage caused by an insufficient amount of oil in the crankcase.
• Before the oil level in the crankcase drops below the safe limit, the oil warning system will automatically shut down the engine.
• Made with high-quality materials and custom-made components that ensure reliable, long-lasting use.
• Exceeds European emissions legislation.
• It achieves high performance but also low levels of noise and vibration and emission of pollutants, without ever sacrificing its reliability.
• Honda engines have deservedly earned worldwide recognition for their ability to deliver power in even the most demanding applications.
• They are the first choice of the biggest manufacturers.
• 36 months Honda warranty (for professional use).
• With stable operating speeds during use.















