 Re: 2 stroke bicycle engine - getting richer with break-in??
Z4 072?! Where'd that come from? I got two Z8C with my bgf 70cc kit.
In any case, the Z indicates a M14x1.25 thread and 11mm reach. So, look for that when shopping for plugs.
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-Herman
"Do not take life too seriously. You will never get out of it alive." -Elbert Hubbard
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