This document is an instruction manual for O.S. engines, emphasizing the importance of reading safety instructions and warnings before operating the engine and familiarizing oneself with its controls and features. It also provides advice on fuel selection, starting, and maintenance.
This document is the owner's instruction manual for the O.S. FS-30S and FS-40S overhead-valve four-stroke-cycle engines designed specifically for model aircraft use. It provides comprehensive guidance on safety, engine parts identification, installation procedures including mounting beams and choke rods, and operational instructions.
| Engine Type | Four Cycle Engine |
|---|---|
| Intended Use | Model Aircraft |
Never touch or allow objects to contact the rotating propeller, and do not crouch over the engine when running. A weakened propeller may disintegrate at speeds exceeding 600 feet per second.
Propeller tip speeds may exceed 600 feet per second, which can cause serious injury if the propeller fails.
All onlookers, especially small children, must be kept at least 20 feet or 6 meters away.
You must use a 1.5mm Allen wrench to secure the choke rod after cutting it to length.