I HAVE A 1981 HONDA CB 650 HAVING THE SAME PROBLEMS AS b717 doc.its stops starting after riding for 45 mins. 3 batteries later,looked @ wires seem good.i´m tired of carrying 1/2 in. wrench & my jumper cables to ride around.had a battery tender on it didn´t help.need a dc motor?? stator?? don´t know.collecting dust in ohio,help!!!!