Re: Ignition Problem
FR is right. Get a service manual and save yourself a whole bunch of headaches on this project. You've got an old motor and there will be plenty of other uses for your manual

Get an OEM manual, as the after-market types can have mistakes and confusing instructions because they try to cover a whole group of motors at the same time. I made the mistake of using one of the after-market types at first.
Your starting problems can be a result of many different problems and you need to follow a set of troubleshooting instructions that will walk through everything in a logical manner instead of taking a shotgun approach. In the long run it will most likely save you a lot of money and time. Your problem could be as simple as a bad battery or loose connection, blown fuse, or more complex like a defective part in the starting system or a bad ignition switch, kill switch, etc. The only buzzer I can think of, would be the overheat warning buzzer in the controller. So you could be looking at a problem with the sensor or a short in your ignition switch or wiring. Lots of choices here.