Mark 2.10 Tread Size
#1
A buddy just dropped off a new Mark 2.10 and Bisson muffler for me to check out. No instructions. Anyone know the proper tread size for the the muffler bolts? I know there metric and tried a 4.0 X 18mm. They tread in fine for about a 1/4 inch then bind up. Don't want to mess it up. Thanks





