The starter in my 140 HP Merc marine engine died. I took it apart and found that the brushes are rusted solid in the brush holders. I tried soaking the assembly in PB blaster for several days but the brushes still won’t break free. Does anyone have any ideas? Part of the brush assembly is made out of plastic so i can’t use anything too strong.
BTW:this starter is about $200!
(I hope this question is okay to post here)