Honda Engines iGX340

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Honda Engines



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.

Common Applications
  • Pressure washers
  • Generators
  • Construction / industrial equipment
  • Forestry equipment
  • Agricultural equipment
  • Water pumps
Advanced Technology
  • Integrated ECU (electronic control unit) with a self-tuning regulator (STR) governor system.
  • 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
  • Allows the engine to respond significantly faster to the load
  • Electronic governor minimizes governor droop, increasing available power
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).
  • Reduced mechanical noise due to higher compression and piston design
  • Large capacity, multi-chamber exhaust system
  • Forged steel crankshaft and rigid crankcase
Proven Reliability
  • Long-life air filter
  • Multifunction Oil Alert
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 access connectors for flexible connection of remote control and for ECU programming
  • Easy maintenance - ideal for rental applications
  • 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
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
  • Bore x Stroke: 88 X 64 mm
  • Displacement: 389 cm3
  • Net Power Output*: 10.7 HP (8 kW) @ 3,600 rpm
  • Net Torque: 19.5 lb-ft (26.4 Nm) @ 2,500 rpm
  • PTO Shaft Rotation: Counterclockwise (from PTO shaft side)
  • Compression Ratio: 8.2:1
  • Lamp/Charge coil options: 3A, 20A
  • Carburetor: Horizontal type butterfly valve
  • Ignition System: Digital CDI with variable timing
  • Starting System: Recoil/electric
  • Lubrication System: Splash
  • Governor System: Electric STR (Self Tuning)
  • 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: 82 lb (37 kg)
  • Length (min): 16.0" (407mm)
  • Width (min): 19.1" (485 mm)
  • Height (min): 17.7" (449 mm)
  • E type: Tapered shaft
  • H type: Reduction type PTO
  • L type: Reduction type PTO
  • P type: Threaded type (SAE)
  • Q type: Straight shaft
  • R type: Reduction type PTO
  • V type: Tapered shaft



Engine Type
Air-cooled 4-stroke OHV
Bore x Stroke
88 x 64 mm
389 cm3
Compression Ratio
10.7 hp (8 kW) @ 3,600 rpm
19.5 lb.-ft (26.4 Nm) @ 2,500 rpm
Fuel Capacity
6.4 U.S. qt. (6.1 L)
Starting System


16.0 in. (407mm)
19.1 in. (485 mm)
17.7 in. (449 mm)
82 lb. (37 kg)

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