Yerfdog Scout plug
 

This is more of just a general comment on my YD Scout with a 150 Howitt engine in it. I bought this thing used about 5 years ago well used, cheap and didn't expect much. Though underpowered, this thing has been great though it does smoke, mostly white smoke. I just put in a new plug NGK c7hsa and gapped it .30 from the .25 that was in there, and now hardly smoked at all after that and "seems" to run better. The little motor runs like a sewing machine anyway. Does burn some oil but not enough for me to chance a rings upgrade.