What thread type is generally used on Evinrude outboards. I believe it is UNC but will one of you knowledgeable folks please confirm or otherwise. (My engine is a 60HP 1985 VRO Twin Cylinder.
I've a VRO 60HP 1987 twin cyl. I've removed 5 of the 8 bolts and the nut from the stud, holding the power head to the lower casing. The other 3 bolts had rusted heads so I had to drill them off. The engine is clamped upside down, and had heat and oil applied followed by attempts to drift out the...