sgtsandman
Aircraft Fuel Tank Diver
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VAGABOND
U.S. Military - Active
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You're joking right? Never seen a 2 stroke with valves.
Stihl engines are actually 4 stroke engines designed to use 2-cycle mixed fuel instead of a separate oil sump and regular fuel. I forget why they went that route but that is why they have valves.
EDIT: Found this in the Stihl website to explain it: https://www.stihl.com/4-mix-engine-lightweight-and-with-good-lugging-power.aspx
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