The key to successful engine running is simply having one of the experienced
Fellas at the field show the new owner how to tune the engine. Just reading
the manual is not going to replace a few minutes hands on practical training.

I am a fan of OS engines. The LA series are great engines for what they are.
They are a perfect....no fuss first engine. They look good, and are easy to start.
The power is adequate for the job they are intended for, which is going to be
powering a new owners trainer around in a slow circle.

It's easy to describe, but to show the owner how to peak the engine, then
back the needle out until the engine slows down some is all it takes. The sight
and sound are better than volumes of reading. That's all it takes, really, to run
just about any glow engine.

FBD.