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Posts: 25
| A couple years ago I attempted to move the cables from one battery to another while the outboard was running to charge a dead battery I ended up touching the opposite posts and fried a bunch of stuff. I've replaced the board and stator and a few other things the motor runs great but it still won't charge it's self. According to my mechanic he's tested all the parts ran them on other motors and the test out well and or work on other motors. He's never let me down in the past but he's currently quite confused as to why this thing won't work so I'm asking any of you who may have some ideas to chime in I would like to get rid of the solar chargers on the casting decks this season.
It's a 2003 Mercury 60 4 stroke efi.
DISCLAIMER:I don't know any technical terms that come with automotive/marine electronics so bear with me.
Any help would be greatly appreciated.
Thanks
Bob Harris
Edited by bob_harris 4/8/2016 9:06 AM
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Posts: 1096
Location: Hayward, WI | 90% of the time it is the rectifier/regulator that is at fault. You may need to install a new upgrade kit for the rec/reg as Mercury had problems in that era. There isn't much to the charging system, should be pretty easy for a mechanic to figure it out. |
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Posts: 25
| Thanks for the reply and sorry if this doesn't make sense. If the stator produces charge on motor A then install the same stator on my motor stator no longer produces charge where might the problem be? From what I understand he has done all the standard trouble shooting and said the same as you "there isn't much to the system should be easy to figure out" but we haven't. So I decided to ask on here because most of you guys are sharp and have seen a lot of strange problems. |
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Posts: 1096
Location: Hayward, WI | Have you checked harness 883834T01? It has a diode in and can cause problems if it is bad.
Edited by kjgmh 4/8/2016 1:25 PM
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Posts: 25
| I'll check thanks for your help |
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Posts: 208
Location: Sun Prairie, WI | regulater/ rectifier most likely. The stator produces AC voltage which the rectifier turns into DC voltage then sends it to the battery to charge. The regulator makes sure that too much voltage isn't sent to the battery. I would bet the problem lies within the regulator / rectifier or the wiring. |
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Posts: 25
| I haven't received any updates from my mechanic might need to get the boat back and try a different one any recommendations for a mechanic in south central WI. And thanks all for the info. |
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Posts: 2754
Location: Mauston, Wisconsin | Castle Rock Marine has pretty good service..
http://www.castlerockmarine.com/service.html
This is the electrical charging system.
http://boatinfo.no/lib/mercury/manuals/50-60.html#/104
However it doesn't show this diode harness.. -> see #27
http://boatinfo.no/lib/mercury/manuals/50-60.html#/104
Its probably a blocking/reverse polarity diode to protect the regulator. If so it could be your problem, e.g., if its open....
Does your tach work? If not, its the stator charging coils or the regulator.
Good luck!
Al
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Outboard won't charge