I just picked up an 86 FLT in great shape w/20k miles. New battery and having trouble turning over. With plugs removed it turns over good at first then starter begins to slow. Jump from auto does same thing.

When I replace plugs it will turn over but super sluggish and then just click. Acts like battery but cables are good and I do not believe it to be battery.

Not sure if starter/solinoide related or what.

Any help???

 

Your battery may be new, but that doesn't mean it is fully charged, despite what the ads say! I suggest you remove it from the bike and charge it over night. It should hold well over 12 volts. Hopefully that will fix it.