Hoping someone could help me out.  Rollout out my 9.9 Evinrude (1991 model) out this past week end to get ready for the fishing season.  Tried to start it and nothing.  If I barely pushed the kill/stop switch in it fired right up, but as soon as I took my finger off the stop switch the motor shut off.  My guess it the stop switch is bad.  Is there anything I can do to test if it is the stop switch before I spend $80 to replace it?  I would appreciate any thoughts or ideas!

When the button is out the two wires should read open with an ohm meter. One wire should go to engine (ground), the other to the ignition system. When you press it in it grounds the ignition to kill the motor.