I have a minkk kota riptide salt water bow mount trolling motor. The motor functioned properly last time out. This time the motor failed to come on. one of the batteries was found to be bad and replaced. The motor is showing a full charge when the test button the motor is pressed..however the motor still will not come on...any suggestions?

check make sure its not wired backwards to batteries

Use a gear puller.

There is more than the shaft, there is the housing and then everything needs to fit and have correct clearances.....I suggest sell the old one and get a 52 inch new one...

max is 56amps on 24v system

Here is a picture of the wire connection for 24 volt. Compare to yours is it correct? If it is, I wish you listed make and model I could of sent you the right picture diagram of you motor. Use this picture as a starting point. Test the wires through the motor testing for 24 volts. Again if I knew make and model I could show you exactly were. Last if voltage is correct all the way through. The motor is the last thing to tear down. If the brushes or armeture is damaged in anyway, or manufactured wrong, it would lead to power loss.

These guy will take care of you,

http://www.jonestrollingmotor.com/

Parts can be purchased from this dealer...There are schematics on the site for review....
http://www.northlandmarine.com/MinnKotaQuickRef.htm

Did the unit come with a strap to mount the transducer to a bow mount electric? Most units do... If not there is probably one available for the unit as an aftermarket accessory or accessory from the manufacturer... Regarding the transducer wire, just wrap and rout this up the front of the bow mount motor shaft so when you pull the motor up and secure it, it is not going to get in the way. You could cable tie the cord down near the bottom of the shaft and one up near the top where they wont interfere with the motor bracket when the motor is positioned up on the boat.

If it is a bow mount model, then you basically need a bow mount bracket attached to the bow of your boat. If one didn't come with the outboard, you will have to buy one from the same manufacturer or an after-market one suitable for your boat. If in doubt, consult the local boating or marine store or wherever you purchased the motor or the bracket from.