Question about 1990 kawasaki ZXR 750
Have fitted a new battery into the bike and after a run it wouldnt start up again.the battery doesnt seem to be holding the charge now.would i need a new altenator?
How long did you charge the new battery before you ran the bike?
I'd have given it a minimum of 6 hours on a trickle-charger.
If you did this then you have got a problem with your charging system as Yeskimoe said, although i've not seen reg/recs give trouble on big Kawis.
Get the battery fully charged again then...
..put a voltmeter across your battery (red to positive, black to negative, 20V DC range)) and rev the bike to 4000 rpm, you should show around 14.5 volts, much less than this and the charging circuit is suspect.
The alternator belt might need tensioning.
Posted on Jun 17, 2009
Try checking your charging system. i would start with regulator/rectifier. they're common to go out.
Posted on Jun 14, 2009
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Posted on Jan 02, 2017
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