C Chbronco New Member Jun 3, 2020 #1 Have read lots but for a new engine HS 49cc what plug would you guys say to use for braking in ?
Greg58 Well-Known Member Jun 6, 2020 #2 I would try the plug that came with it first,that will give you some info to see if the heat range is right.
I would try the plug that came with it first,that will give you some info to see if the heat range is right.
