Two strokes have a reed valve, instead of the kind found in
four strokes. The four stroke valves, I'm not sure what they
are called.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
..
Leaded fuel is NOT required (or even desired) in 2 stroke
engines.
Lead was required to protect the valves, which the VAST
majority of 2
stroke gasoline engines do not have.