voltage regulator

[lanierland]

i have a 2000 mercury 90 hp 4stroke. bought it two days ago, run great. took it out on the lake yesterday and the voltage regulator got hot and melted. note i did have the battery on a charger yesterday morning. did the battery charger create this problem? or coincidence? or faulty cdi box? are these known to go bad? where is the best place to order parts?

[boats.net]

Check battery cable connections at battery and engine are clean and tight, check all wire and ground connections are good.
replace regulator with 804278A12 Regulator

[boatmangc]

Look under the flywheel and make sure there is no melting or discoloration of the stator as well.
If your battery has an issue (IE: shorted cell) it could have caused the failure as well.
Motor temperature can easily cause this as well, the regulator is cooled by contact with it's mounting points.