Under the trolling motor are two plates that attached to it–1 plate for the 2 back screws and one plate for the 2 front screws. You need to removed the plate with the trollling motor plug. Seems like there are 4 or 5 square head screws depending on the model. Cant remember if the size of the nut, but the front ones are a little challenging to get to. Would suggest having a friend to help if possible to hold the wrench or tighten the screws. Hope this helps.