This PDF file is the manual of O.S.60R, 60P and 60N engines, which introduces the structure, use and maintenance of the engines.
This instruction manual covers the safe operation, installation, and maintenance of O.S. four-stroke model aircraft engines, specifically the FS-70S 2, FS-91S 2, and FS-91S 2-P models. It emphasizes the importance of reading safety warnings before attempting to operate the engine, which is designed for model aircraft and should not be used for other purposes. The document details the specific features of these engines, such as the corrosion-resistant plating on steel parts and the optional PD-07 diaphragm type fuel pump found in the FS-91S 2-P variant.
| Engine Cycle | four-stroke-cycle |
|---|---|
| Mounting Beam Section | at least 15mm or 5/8-in square |
| Suggested Fuel Tank Capacity | approximately 300cc |
| Propeller Tip Speed Limit | 600 feet(180 metres) per second |
This engine was designed for model aircraft and should not be used for any other purpose.
An electric starter is recommended for this engine.
The wearing of safety glasses is strongly recommended.