This is the instruction manual for O.S. engine, which mainly introduces the safety operation, basic components, installation method, cooling fan installation, pre-start precautions, spark plugs, fuel, carburetor, control devices, starting, running-in adjustment, subsequent adjustments, carburetor cleanliness, adjustment chart, throttle servo installation, care and maintenance, engine exploded view and parts list, carburetor exploded view and parts list, three-view drawing, O.S. genuine parts and accessories, etc
This user manual covers the safe operation and maintenance of the O.S. 46FX-H Ring, a high-performance engine designed specifically for medium-sized radio-controlled helicopters. It includes essential safety instructions regarding fuel handling, exhaust heat, and carbon monoxide, as well as guidance on mounting the engine securely to prevent distortion.
| Displacement | 7.45 cc (0.455 cu.in.) |
|---|---|
| Bore | 22.0mm (0.866 in.) |
| Stroke | 19.6mm (0.772 in.) |
| Practical R.P.M. | 2,000~17,000 r.p.m. |
| Power output | 1.62 bhp / 16,000 r.p.m. |
| Weight | 385g(13.6oz.) |
This engine was designed for model helicopters and should not be used for any other purpose.
The engine is installed with an O.S. No.8 glow plug.
A 2-volt rechargeable lead-acid cell (at least 5Ah) is preferred over a 1.5 volt dry cell.