Honda G20

Honda G20The Honda G20 is a 132 cc (8.05 single-cylinder air-coolled 4-stroke internal combustion small gasoline engine manufactured by Honda Motor Company since 1963 for general-purpose applications.

The G20 has a slide valve (L-head) design and an efficient combustion chamber designs together with a high-performance carburetor. Friction components such as the cylinder sleeve and piston are made of high strength materials.

The G20 produced 2.0 PS (1.47 kW) at 3400 rpm of continuous rated horsepower and 3.0 PS (2.2 kW) of maximum horsepower.

General information

Engine Specifications
Model G20 / GR20
Type 4-stroke, single cylinder, side-valve
Displacement 132 cm 3 (8.05 cu-in)
Max. horsepower 3.0 PS (2.2 kW)
Max. torque
Carburetor Horizontal, butterfly valve
Cooling system Forced-air
Ignition system High voltage ignition
Lubricating system Splash system
Starting system Recoil starter
Stoping system Ground switch
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 4.5 L
PTO shaft rotation Counterclockwise (from PTO shaft side)

Maintenance data

Oil system
Oil type Honda 4-stroke or an equivalent
Recommended oil SAE 20 or 30
Oil capacity 0.57 l
Ignition system
Spark plug NGK: C-6HB
Spark plug gap 0.6-0.7 mm (0.024-0.028 in)
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