Honda GX340 / GX390
Honda GX390
Choose a base model
OHV power with a horizontal shaft for commercial equipment. Select a base model and confirm the complete engine type for your machine.
- Displacement
- 389 cm3
- Net Power Output
- 11.7 hp (8.7 kW) @ 3,600 rpm
GX390 · Specifications
Base-model specifications. A model selection does not confirm an exact ordering type, shaft dimensions or replacement fit.
- Engine Type
- Air-cooled 4-stroke OHV
- Bore x Stroke
- 88 X 64 mm
- Displacement
- 389 cm3
- Net Power Output
- 11.7 hp (8.7 kW) @ 3,600 rpm
- Net Torque
- 19.5 lb-ft (26.5 Nm) @ 2,500 rpm
- PTO Shaft Rotation
- Counterclockwise (from PTO shaft side)
- Compression Ratio
- 8.2:1
- Lamp/Charge coil options
- 25W, 50W / 1A, 3A, 10A, 17A, 25A
- Carburetor
- Butterfly Float Type
- Ignition System
- Digital CDI with variable timing
- Starting System
- Recoil/electric
- Lubrication System
- Splash
- Governor System
- Centrifugal Mass Type
- Air Cleaner
- Dual element
- Oil Capacity
- 1.16 US qt (1.1 L)
- Fuel Tank Capacity
- 6.4 U.S. qts (6.1 liters)
- Fuel
- Unleaded 86 octane or higher
- Dry Weight
- 69 lb (31.5 kg)
Dimensions
- Length (min)
- 16.0" (407 mm)
- Width (min)
- 19.1" (485 mm)
- Height (min)
- 17.7" (449 mm)
Overall dimensions are not crankshaft dimensions. Check the complete type and installation requirements.
Features
- Variable-timing digital CDI ignition
- OHV valve layout
- Ball-bearing-supported crankshaft
- Balancer shaft helps control vibration
Applications
- Pressure washers
- Commercial lawn and garden equipment
- Tillers / cultivators
- Generators
- Forestry equipment
- Construction / industrial equipment
- Agricultural equipment
- Small vehicles
- Water pumps
Configuration choices
Honda lists configuration-dependent options. Starting equipment, charging output, exhaust and shaft choices must be checked against the complete engine type; published group options are not included on every engine.