This manual is an instruction manual for O.S. engines. It mainly introduces the safe operation, installation and maintenance of the engine.
This instruction manual covers the O.S. FS-120S 3, a 20cc four-stroke engine featuring a PD-07 diaphragm fuel pump and a Type 70N carburettor. It details the engine's introduction, including its corrosion-resistant plating and baffled silencer, as well as optional configurations like reversed controls.
| Displacement | 20cc |
|---|---|
| Cycle Type | four-stroke |
| Fuel Pump Type | PD-07 diaphragm type |
| Carburettor Type | Type 70N |
| Silencer Type | Type F-5020 |
| Recommended Fuel Tank Capacity | approximately 450cc |
It is a 20cc four-stroke engine.
It is fitted with the O.S. PD-07 diaphragm type fuel pump.
It is supplied with an O.S. Type F-5020 baffled silencer.