From:Doug Strange
Subject:RE: Sparks plugs Date:Sat Feb 27 13:26:29 2016
Response to:6097
I'm running Champion D16's in my 1931 KJ. Those are hot plugs
but the bike runs great on them.

Can anybody out there tell me what spark plug and heat range
came in a 1930 KJ and in a 30 superx from the factory and a
picture would be helpful thank you