Motocruiser
Member
So I took the jug off my 66cc skyhawk today to measure ports and do some polishing. When I tried to put the jug back on the piston was giving me trouble. I was able to get both rings compressed and get the piston in just past the rings but that was all. I decided it needed some persuasion so i took a rubber mallet to the top of the jug and crack goes the exposed cylinder wall and a ring! Whats the best way to go about doing this? Does anyone know the piston ring size? 46mm-1mm, 46mm-1.5mm, 47mm-1mm, 47mm-1.5mm etc...?