The Honda G20 is a 0.1 L (132 cc, 8.06 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Honda Motor Company since 1963 for general-purpose applications.
The Honda G20 engine has a single-cylinder, L-head design with two valves, and a heavy-duty recoil starter. This engine used horizontal type carburetor with a butterfly valve, high voltage ignition system, splash type lubricating system, and forced-air cooling system. The G20 is equipped with a 4.5 L fuel tank.
The Honda G20 engine produced 3.0 PS (2.2 kW; 3.0 HP) of peak output power and 2.0 PS (1.47 kW) at 3400 rpm of continuous rated power.
|Engine type||4-stroke, L-head, single-cylinder|
|Displacement||132 cm3, (8.06 cu·in)|
|Max. horsepower||3.0 PS (2.2 kW; 3.0 HP)|
|Cooling system||Forced air|
|Lubricating system||Splash type|
|Ignition system||High voltage ignition|
|Fuel system||Horizontal type carburetor with butterfly valve|
|Fuel tank capacity||4.5 L (1.19 US. gal. 0.99 Imp. gal.)|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Starting system||Recoil starter|
|Stoping system||Ignition primary circuit ground|
|PTO shaft rotation||Counterclockwise (from PTO shaft side)|
|Lubrication system:||Splash type|
|Oil type:||SAE 20 or 30|
|Recommended oil:||Honda 4-stroke or an equivalent|
|Oil capacity:||0.57 L (0.6 US. qt, 0.5 Imp. qt.)|
|Type:||Horizontal type carburetor with butterfly valve|
|Type:||High voltage ignition|
|Spark plug:||NGK C-6HB|
|Spark plug gap:||0.6-0.7 mm (0.0236-0.0276 in)|