
K75RT Keith is exactly right, in the starter motor the commutator has stopped on a flat spot that won't pass electric current. Here' s a very quick fix that'll get you goin':1. Sitting on the bike,
key in the OFF position, rock the bike and put into 5th gear.
2. Pull the clutch and roll the bike BACKWARD a foot or a little more.
3. With the bike still moving dump the clutch, you should hear the starter engage and spin backward.4. Put the bike in Neutral, choke, key ON and hit the starter.
That worked for me and the bike started immediately. The starter has a freewheel clutch, when rolling backward the clutch engages and rotates the commutator off the dead zone and the starter will work again. Next, do as Keith recommended and clean the starter, that is dismantle the starter to clean the gunk out of it. You'll be good for many more miles.