This instruction manual covers the O.S. FS-72 single-cylinder overhead valve four-cycle engine, which is part of the new FS series. It features a modern design, a newly designed F-5030 silencer, and a new lubricating system that eliminates the need for breather tubing. The engine is designed specifically for model aircraft and should not be used for other purposes.
| Engine Type | Single cylinder overhead valve four cycle |
|---|---|
| Fuel Requirement | Methanol based fuel with 18% castor oil |
| Silencer Model | F-5030 |
| Glowplug Type | TYPE F |
| Carburetor Type | 61N |
The engine should be operated on a methanol based fuel containing not less than 18% castor oil, or a top quality synthetic lubricant, plus a small percentage of nitromethane.
No, the engine is not supplied with any tools such as Allen keys or wrenches.
No, this engine was designed for model aircraft and should not be attempted for any other purpose.