Taking intelligence to a whole new level.
The iGX340 is technologically advanced, offering you features and performance like no other small engine in the world. With its multi-function, high performance design combined with the same superior reliability of Honda’s legendary GX engines, the iGX sets a new standard for engines.


Pressure washers
Forestry equipment
Construction / industrial equipment
Agricultural equipment
Water pumps

Advanced Technology

  • Integrated ECU (electronic control unit) with a self-tuning regulator (STR) governor system.
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  • Engine senses and adjusts RPMs to match the application’s load and speed requirements.
  • ECU enables drive-by-wire remote control operation of the engine and regulates functions such as throttle position.

Fuel Efficient Operation

  • Fuel economy is increased by approximately 15% over a similar conventional engine
  • Auto Throttle

High Power Output

  • Electronic governor minimizes governor droop, increasing available power
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  • Allows the engine to respond significantly faster to the load

Smooth Performance

  • ECU fine tunes the throttle position to maintain a precise engine speed.
  • Precision engineered components result in lower vibration

Exceptionally Quiet

  • Improved muffler reduces overall engine noise by up to 4 dB(A).
  • Large capacity, multi-chamber exhaust system
  • Reduced mechanical noise due to higher compression and piston design
  • Forged steel crankshaft and rigid crankcase

Proven Reliability

  • Long-life air filter
  • Multifunction Oil Alert
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Easy to Use and Maintain

  • No manual manipulation of the choke or throttle – Easier for inexperienced users to operate
  • Wide fuel filler mouth with ratchet-type fuel filler cap
  • Easy maintenance – ideal for rental applications
  • Easy access connectors for flexible connection of remote control and for ECU programming
  • Externally serviceable Oil Alert

Easy Starting

  • Auto Choke
  • Low effort recoil starter with automatic decompression
  • Camshaft profile is optimized for easy starting
  • Large diameter recoil starter assembly
  • Automotive-style ignition coil on spark plug
  • Digital CDI with higher spark plug voltage
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Emissions Compliant

  • CARB and EPA certified
  • No catalyst necessary

Available Options

  • Spark arrester available
  • Charge and lamp coils with multiple output options available
  • Low profile versions available



Engine Type Air-cooled 4-stroke OHV Air-cooled 4-stroke OHV
Bore x Stroke 88 X 64 mm 88 X 64 mm
Displacement 389 cm3 389 cm3
Net Power Output* 10.7 HP (8 kW) @ 3,600 rpm 11.7 HP (8.7 kW) @ 3,600 rpm
Net Torque 19.5 lb-ft (26.4 Nm) @ 2,500 rpm 19.5 lb-ft (26.4 Nm) @ 2,500 rpm
PTO Shaft Rotation Counterclockwise (from PTO shaft side) Counterclockwise (from PTO shaft side)
Compression Ratio 8.2:1 8.2:1
Lamp/Charge coil options 3A, 20A 3A, 20A
Carburetor Horizontal type butterfly valve Horizontal type butterfly valve
Ignition System Digital CDI with variable timing Digital CDI with variable ignition timing
Starting System Recoil/electric Recoil/electric
Lubrication System Splash Splash
Governor System Electric STR (Self Tuning) Electric STR (Self Tuning)
Air Cleaner Dual element Dual element
Oil Capacity 1.16 US qt (1.1 L) 1.16 US qt (1.1 L)
Fuel Tank Capacity 6.4 U.S. qts (6.1 liters) 6.4 US qts (6.1 liters)
Fuel Unleaded 86 octane or higher Unleaded 86 octane or higher
Dry Weight 82 lb (37 kg) 82 lb (37 kg)