solenoid windings/contacts breaking down take the starter motor off and take it to an alternator & starter motor repairer you'll find them in yellow pages or bike mags or get a replacement starter motor secondhand plenty of bike breakers out there.
Dr bob
March 2010
if it turns a bit then there is a series of fast clicks the battery is faulty and not carrying enough amps.get a new good one
adam bike doctor
March 2010
check your battery with amp meter if its o.k its the starter motor
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix motorcycles.