knoxa
New Member
First time posting.I am rebuilding a 1988-89 Mariner outboard 3 cylinder 2 stroke 50hp.The burning question is there are two cylinders(bottom and middle) that have a 1/16 dia. hole on the side opposite the exhaust that go through the cylinder wall.Its not oil injection and I cannot find anything showing this on any schematics I have looked at.Does anyone have any idea what they are for.?