I have a 1987 omc trolling motor 12/24 volt 40in. shaft i think. i burnt the motor up on it but i have a good motor for it i think its a 40 something lbs thrust and i have some spare parts for one of these to 175.00 obo.
I believe it`s 3 1/4" bolts and undo the wires at the foot. Hardest part is getting the wires tucked back in so you can tighten the bolts.....a little patience and it ain`t to bad.