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otis
03-24-2013, 10:56 AM
(http://www.fixya.com/support/p12744196-motorguide_fw46_fb_freshwater_bow_mount) MotorGuide FW46 Bow Mount Trolling motor only runs in one speed. What should I check to... (http://www.fixya.com/support/t17250986-motorguide_fw46_bow_mount_trolling_motor) MotorGuide FW46 Bow Mount Trolling motor only runs in one speed. What should I check to troubleshoot for repair? Is the speed control switch bad or is there another possibility?

papyson
03-30-2013, 07:00 PM
what speed?

otis
03-30-2013, 07:48 PM
Papyson,

It would only run on #5 speed. I have since fixed it. The fix is not to replace the speed control switch.

Here is the fix: Unless you are mechanically inclined, dont attempt this. Take the lower unit apart by removing the prop and removing the two bolts that hold the forward and aft housing to the center housing. Fwd being the cone shaped part. Pull the aft housing away from the motor so you can inspect the connections to the board that holds the brushes and the soldered wiring terminals. You should find the solder missing from at least one of the terminals that connects the wiring from the foot switch to the speed control windings inside the aft housing. Clean up the terminal and wiring and re-solder. Also re-flow the solder on the other terminals. Clean up the seals and the area where the seals meet the housing parts. Replace seals if damaged. Reassemble the lower unit and torque the bolts 45-50 in-lbs and no more otherwise you will fail the seals. This problem is due to a "cold" solder joint that creates a high resistance to elec current flow and heats enough to melt the solder. This is a result of poor quality control at the manufacturer. Good luck.

papyson
03-30-2013, 10:53 PM
good deal on fix...this is a known problem