20 Most Recent Minn Kota Maxxum 70 Freshwater Bow Mount Trolling Motor - Page 4 Questions & Answers

Hi!
Minn Kota doesn't supply any other props than the stock ones for a reason....if you install a larger prop, it takes more power to turn it at the same speeds. More power (amp draw) means more heat....more heat means blown electronics. Be careful, in their warranty they state that installing an aftermarket prop will void the warranty. For good reason too! I've seen the damage that can occur.
Best of luck
Mike

Here's a schematic for your motor:
Maxxum 74 Bowmount
I suspect the the bearings and cups are damaged and binding the tubes. Have a look at key #'s95, 78, 58, 59, 78A, 79. as these are the actual brgs and cups.
Good luck on your repair!
Mike

On the base of the foot pedal there is a tensioner for the cable. Try loosening or tightening that first. If you still have the manual from when you bought it, it is explained in deatil in there. It's a common issue - not to worry!

Sounds like a bad connection somewhere. I would take it to a authorized dealer for repair if it's still under warranty. Can get a bit tricky to repair yourself unless you're comfortable with soldering.

You should only use the MOM (or momentary) setting when using the push button the foot pedal. Con will just keep the motor running and your foot control will only allow for direction and speed!

It is needed. I usually install 3 amp fuses. It sounds like you have a short somewhere. I would trace the wiring and make sure it did not get the sheath cut and is possibly contacting the boat. I always install a fuse and that eliminates the threat of a fire. There is a reason that the fuse is blowing and if you remove it then you move the problem straight to the battery and you will most likely see smoke. Also if you dont install the fuse the equipment factory warranty will be void. You really just need to check out the wiring carefully. If there is no problem with the wiring then there is a problem with the unit and should be exchanged.

HOPE THIS HELPS

The potentiometer that varies the speed is probably dirty. Try spraying some "electrical cleaning solvent" into the pot as you move the control. If this doesn't help, you will probably have to replace the pot if you can find one or replace the speed control.
Good luck.

According to: http://www.northlandmarine.com/MinnKotaMotorControlBoardAssm.htm

*Note: Newer model trolling motors have serial numbers beginning with the two-letter prefix MK (Minn Kota), followed by a two-letter year code. MKAB .......... 2001
MKAC .......... 2002
MKAD .......... 2003
MKAE .......... 2004
MKAF .......... 2005 MKAG .......... 2006
MKAH .......... 2007
MKAI ............ 2008
MKAJ ........... 2009
MKBA .......... 2010 A serial number with the designation MKAB denotes a
2001-motor and MKBA would be a 2010-year model

dismantle and clean the foot peddle, grease all moving parts. this might help, I did this and it solved the problem. things just were not sliding easily enough inside to do there job.

There should be a retainer nut accessible at the rear of the prop (in the center of the prop. Remove this and the prop should slide off.

I am not sure which trolling motor you have but click the link and scroll down to select your trolling motor the battery hookup is the last page

http://www.northlandmarine.com/MinnKotaQuickRef.htm

Raventrans click this link to take you to a website which will you can click on schematics. I suggest adding a 50 amp fuse for your 70 lb thrust unit. scroll to the end of the schematic to find the battery hookup for a 24 volt hookup.

http://www.mikesreelrepair.com/./index.php