This manual provides operating, maintenance and servicing information for the OS 26SRII engine.
This document is the owner's instruction manual for the O.S. FS Series overhead-valve four-stroke-cycle engines, specifically models FS-26S and FS-40S. It serves as a guide for users to safely operate, install, and maintain these model aircraft engines.
The manual provides detailed instructions on safety precautions, engine introduction, installation procedures including choke rod and exhaust pipe adjustment, fuel selection, starting techniques, running-in procedures, carburetor adjustments, valve adjusting, and care and maintenance. It also includes exploded views of the engine and carburetor with parts lists.
| Engine Type | Four Cycle Engine |
|---|---|
| Application | Model Aircraft |
Never touch or allow any object to come into contact with the rotating propeller, and do not crouch over the engine when it is running.
No, the engine was designed specifically for model aircraft and should not be attempted to be used for any other purpose.