Horizontal Crankshaft


Make light work of hard tasks. Get cleaner, more efficient performance for a wide range of equipment.

Horizontal Crankshaft

Reliability meets Intelligence

GX50 Features
  • 4-stroke – no fuel/oil mixing
  • Full 360° "any-side-up" operation – use and store in any position
  • Exclusive rotary-slinger lubrication system
  • Approximately 20% more efficient than the operating cost of comparable 2-stroke engines
  • Efficient port configuration and large diameter valves maximize power output
  • Lighter, more rigid valve train
  • Carburetor equipped with accelerator pump for fast, easy acceleration
  • Precision-engineered components result in lower vibration
  • Lighter piston minimizes vibration
  • Ball bearing supported crankshaft for greater stability
  • Roller bearing supported connecting rod
  • Belt-driven OHC design reduces mechanical noise
  • Large capacity, multi-chamber exhaust system
  • For extra noise control, an inner protector has been added inside the cowl
  • Sophisticated air intake system
  • High-quality materials, fit, and finish
  • Lifetime timing belt design (in-oil design)
  • Integrated fuel system protection
  • Diaphragm carburetor
  • Muffler with spark arrester
  • Easily accessible spark plug
  • Easy to drain and re-fill oil
  • No mixing of gas and oil
  • Exhaust decompression system
  • Unique low-inertia design
  • CARB Tier 3, EPA Phase 3 and EU stage 5 certified
  • No catalyst necessary
  • E10 compliant (10% ethanol)
  • Special designs for horizontal applications available

Full 360° "any-side-up"

Mini 4-Stroke Series

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 centre of the reservoir prevents oil from accidentally flowing into the combustion chamber.

Approximately 20% the operating cost of comparable 2-stroke engines

Mini 4-Stroke Series

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 (up to 90% better than comparable similar horsepower class gasoline 2-stroke engine).

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

Belt-driven OHC design

Mini 4-Stroke Series

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.

  • Service & Warranty

    You can rely on Honda dealers and Honda Genuine Parts.

    Keeping your Honda healthy is an imperative part of maintaining the quality, reliability and performance of your engine.

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