I have a friend that is having problems with his trolling motor and asked if I could post it here for some suggestions.

He owns a motorcraft Pro 4300. When turning motor with foot controller it squeeks. Sometimes extra force is needed to turn the motor with the footcontroller. What can he do to fix this problem.

Lube? Were and how?

Thanks in advance.

Never even heard of that motor but if it's made like the MG's and MK's the two things I would check are the top and bottom bearings in the upper section and the cable.   Sometime the collar around the shaft that hold the bottom bearing up snug in the race will get loose and slide down, letting the shaft rub inside the upper section.  Sometimes when it does this, the balls will fall out and you have to take it appart and replace the bearings.  

Over time, moisture will get into the cables, causing them to rust and get very hard to slide.