1989 Yamaha fj1200 will not start

SOURCE: I have a 1999 Yamaha Wolverine. When start button

it sounds to me like you have a faulty terminal, check voltage reading to the relay from battery pos terminal, now push and hold button and recheck on same terminal, if it stays at around 12volts check terminal on other side of relay it this is lower significantly than first side replace again with new relay. of both terminals voltage drops you have faulty battery.

SOURCE: engine wont start on yamaha xt600 e turns a few

bike is rolling getting fire but think its the starter brushes and amatuer...