This manual introduces the safety operation and maintenance methods of O.S. engines, including installation, use, maintenance and other contents.
The O.S. FS-52S is a four-cycle internal combustion engine designed specifically for use in model aircraft. This Owner's Instruction Manual covers essential topics including safety warnings regarding propellers and fuel, installation steps, starting procedures, running-in guidelines, and idle mixture adjustment.
Detailed sections are included for valve adjusting, care and maintenance, exploded views of the engine and carburetor, a complete parts list, genuine accessories information, and three-view technical drawings.
| Displacement | 8.56cc (0.523cu.in) |
|---|---|
| Bore | 23.0mm (0.906in) |
| Stroke | 20.6mm (0.811m) |
| Practical H.P.M. | 2.300 - 13.000r.p.m. |
| Power output | 0.9bhp/12.000rpm. |
| Weight | 434g (15.31oz) |
This engine was designed for model aircraft and should not be used for any other purpose.
Do not hold the plug with bare fingers; use an appropriate tool or a folded piece of cloth.