Re: Cb750 F SuperSport, Alternator Problems -- Please help!!!

Posted by sgtslag on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Cb750-F-SuperSport-Alternator-Problems-Please-help-tp3702279p3704144.html

Tools is right:  check all of the components of the charging system.  It could be the voltage/regulator assembly, or something within the alternator.  Figure out/test before you start throwing parts at it -- your wallet will thank you.


I would also recommend you install a Volt Meter, of some sort, after you get it sorted out.  Draining the battery dead, will shorten its already-too-short life!  I had two batteries, on two different bikes, leave me stranded, when they failed, without much warning.  With a Volt Meter onboard, you can watch to see if the charging system is working properly, with a mere glance at the gauge.  There are several types, including those made specifically for bikes, as well as automotive gauges.  When your bike is idling below roughly 1,700-2,000 RPM, the system will not charge; above ~2,000 RPM, it should read 12.6 Volts, or higher, indicating that it is charging the battery (above 15 Volts, and your Regulator is not working, but it is boiling off your electrolyte...).

Let us know when you get the charging issue sorted out, and we can then assist you in hooking up a Volt Meter of your choice (they all work roughly the same, and there are only a couple of things to consider in connecting them properly, and safely).  Cheers!