Tachometer shorting out

[spareparts]

could be the shift switch onthe shift plate, hook the tach wire back up, and look at the roller switch on the shift plate, make sure its not stuck. Try starting it again and if it doesn't start, disconnect the wires to teh shift switch and try again. If that still doesn't do it, disconnect the tach wire at the back of the tach, and try one more time, if it starts now, you truely have a bad tach