Voltage regulator 1990 75 hp Mariner

[fivebucks]

Went to start outboard after 2 months and battery was dead.  I probably got careless trying to jump it connecting jumpers from one of my trolling motor battery and when that didn't work I hooked up the battery charger at the same time.  I heard a weird clicking noise but thought nothing of it.  I ended up starting the motor by connecting the trolling battery to start the motor and then rehooked up the dead battery to charge it.  After a little while I smelled something and opened the cowl and there was a hole in the regulator and smoke coming out.  I assume the regulator is fried but could there be more damage downstream from the regulator?  My plan is to replace the regulator but is there anything else I should check out before running the outboard?  Here is a pic of the regulator.  There is a hole beneath the far left wire.  Also would there be much risk in buying a used part vs. a new part.  Thanks for any help.

Edited September 8, 2015 by fivebucks

[fivebucks]

One other question.  Looking at parts online I see there is another voltage regulator downstream of this one.  What are the chances that I will need to replace that one also?

[marine_man]

What year and model of motor?

As far as new vs used... tough to say... it's electrical, so there's no good way to know if the used part you buy is good or not until you install it.

marine_man

[delcecchi]

It's a 1990 Mariner 75HP.......   (see title thread. )

[boatfixer]

there should be only one voltage regulator on that engine. As long as the wires to the stator arnt burned I wouldn't worry too much about the other components yet. I'd replace the VR and go from there

[fivebucks]

Thanks.  I got the new VR.  They had me replace another piece on further upstream and that confused me.  Anyhow I replace the VR (only dropping one screw in the lake as boat was on boat lift).  Motor ran fine until a little over half throttle and then started to miss and bog down some.  I called a guy I know and he thought it might be the electrical board so I hauled boat home to take to my fix it guy neighbor.  At his place I notice a broken red wire leading to the electrical board so he fixed that and verified my stator is OK.  I must have broken that wire taking the cowl on and off a few times.  Anyhow I will test drive it tonight after work and hopefully good to go.

[fivebucks]

Test drive went fine and boat is ready to head back to the cabin for some fall fishing.