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Honda engines offer a variety of advanced features for superior performance, durability, and the highest quality available. Click on any feature to learn more.

Automatic mechanical de-compression system

Beneift: Easy Starting

Models: All Models

Honda's automatic mechanical decompression system is designed to give you quicker, easier starts.

This system, which is connected to the camshaft, reduces compression by opening the exhaust valve slightly when the engine is being started. This reduces the amount of force needed to start the engine and improves starting performance.

The system disengages automatically after the engine starts to prevent any power loss during normal operation.

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Variable Timing Digital CDI ignition

Beneift: Easy starting, high power output, and better fuel efficiency

Models: GX, V-twin & iGX

Honda's Variable Timing Digital CDI ignition allows optimal ignition timing based on engine speed. The result:

  • Excellent starting,
  • High power output,
  • Reduced fuel consumption, and
  • Outstanding emissions performance

An engine rev limiter is also incorporated to prevent over-revving.

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Oil Alert

Beneift: Better reliability

Models: GX, V-twin & iGX

Honda's Oil Alert system helps to prevent engine seizure due to a low oil condition.

The system consists of an oil level sensor inside the crankcase. When the oil reaches a level that is too low for safe operation, the engine warns you or stops automatically.

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Hemispherical combustion chamber

Beneift: Better fuel efficiency and higher output

Models: V-twin

Honda's hemispherical combustion chamber was inspired by our proven racing technology. It offers the highest V-Twin compression ratio on the market.

The power is transmitted through forged-steel connecting rods and a forged-steel crankshaft, supported by a full-pressure lubrication system.

  • 9.3:1 compression ratio generates tremendous power.
  • Excellent combustion efficiency.
  • Allows a radial configuration to create high volumetric efficiency.
  • Places the spark plug near the center of the chamber for optimal flame travel.

This means increased engine efficiency and more power to your application.

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Integrated cylinder and head

Beneift: Improved reliability and combustion

Models: V-twin

The idea of integrating the cylinder & head into one unit is radical. Radically smart. It eliminates the head gasket, head bolts, and allows for more airflow and better cooling.

Speaking of cooling, improved cooling means better combustion management. Cooling is also improved by each of the lightweight aluminum pushrods being housed in a separate tube to achieve enhanced airflow.

When you put it all together (with fewer parts) you get an engine with reduced emissions and greater-than-ever durability.

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High capacity oil pump

Beneift: Better reliability

Models: V-twin

The lubrication system uses a high capacity pump with discrete chambers. This facilitates consistent oil delivery.

The high output oil pump offers numerous benefits:

  • Twice the capacity of the previous model
  • Redesigned pump cover and sealing system ensure engine reliability
  • Full pressure lubrication to the flywheel, PTO, and connecting-rod bearings

The result?

  • Reduced friction
  • Extended engine life
  • Less mechanical engine noise

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Integrated ECU (electronic control unit) with a self-tuning regulator (STR) governor system

Beneift: Intelligent operation, increased performance, and improved fuel efficienc

Models: iGX

Honda iGX engines feature an integrated ECU (electronic control unit) with a self-tuning regulator (STR) governor system.

The innovative ECU monitors and controls engine functions including Throttle, Choke, Ignition Timing, and Oil Alert. On some models, it also offers programmable governor and throttle modes for unprecedented flexibility. A diagnostic LED helps with trouble shooting. Stepper motors precisely control throttle and choke position.

This allows the engine to communicate with the machine it is powering.

  • Operation is automated
  • Control becomes surer, faster and easier.
  • Enables drive-by-wire remote control operation of the engine, regulating functions such as starting, throttle, ignition timing and diagnostics.
  • Engine speed can be programmed and varied based on the equipment application's load and speed requirement.
  • Easier for inexperienced users to operate
  • Easily maintained - Ideal for rental applications

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Electronic governor

Beneift: Increased power

Models: iGX

The electronic governor minimizes governor droop. This increases available power.

For most normal engines, available power is decreased when the engine is approaching wide open throttle.

The iGX's advanced electronic governor eliminates this by electronically controlling the throttle to achieve a higher effective power output.

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Compact combustion chamber, overhead cam design, and uniblock construction

Beneift: Increased reliability, easier maintenance, and lighter weight

Models: GC, GS

A truly innovative combination of a compact combustion chamber, overhead cam configuration and uniblock construction significantly reduces fuel and oil consumption as compared to conventional side-valve engines.

Honda's simple design has made the GC and GS Series lighter and more compact than any engine in their class. Plus, simple construction has minimized the number of parts, making the engine more reliable and easier to operate.

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Lifetime timing belt design

Beneift: Better reliability

Models: GC, GS

Honda's GC and GS engines use the world's first small engine internal timing belt, designed to last the lifetime of the engine.

Small engine timing belts are usually external and are subject to wear caused by dirt. Honda's internal timing belt runs in oil, eliminating the need for conventional drive gears.

This Design:

  • Improves lubrication,
  • Reduces the weight of the engine, and
  • Provides quieter operation.

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Auto choke system

Beneift: Easy starting

Models: GCV, GSV

Honda's Auto Choke System is available for use on GCV160 and GCV190 engines in fixed-throttle lawnmower applications. This user-friendly system is truly automatic, eliminating levers and cables.

The engine starts easily whether cold or hot and is ready to use immediately.

Once the engine is up and running, the Auto Choke automatically returns to an optimal operating position.

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Full 360° 'any-side-up' operation

Beneift: Ease of us

Models: Mini-4

The innovative design of Honda's Mini 4-Stroke engines allows them to be used and stored in any position for full 360° usability. Upright, sideways, even upside down – the Mini 4-Strokes will still run great.

An exclusive Honda rotary-slinger lubrication system keeps oil in a completely misted state and circulates it using pressure fluctuations generated by the movement of the piston.

Built-in passages effectively return the circulated oil to the oil reservoir from every part of the engine. An oil return port positioned in the center of the reservoir prevents oil from accidentally flowing into the combustion chamber.

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Approximately half the operating cost of comparable 2-stroke engines

Beneift: Reduced cost of ownership

Models: Mini-4

Efficient 4-Stroke technology not only offers superior fuel economy, it also requires no mixing of oil in the engine's fuel supply. This substantially reduces both oil consumption and the emission of unburned oil in the exhaust.

The results include better all-around environmental performance and operating costs that actually decrease the more the engine is used!

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Belt-driven OHC design

Beneift: Quieter performance

Models: GC, GS, Mini-4

In addition to the milder operating noise of 4-Stroke engines in general, the Mini 4-Stroke's belt-driven OHC design further reduces unpleasant mechanical noise. Its lighter piston and other moving parts help keep vibration to a comfortable level.

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Honda Australia Approved Honda Australia Approved Warranty

Learn more about Honda's engine warranties.

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Information on the cutting edge technology used in all of our engines

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Why choose a Honda?

Reliability, Ease of Use and Fuel Efficiency. These are just some of the reasons to choose a Honda, take a look at the complete list.

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