I now have almost 200 HRS on my BFP60 and the maintenance schedule calls for a spark plug change. I can find no source for the specified NGK LMAR6C-9 (Honda #31908-ZZ3-003) other than Honda dealers. NGK doesn't even list these on their web site. The retail price for these is
$29 and some change - EACH.

I can't find a cross reference to any other brand plug. Any suggestions.