How to adjust a Franz LM-4 Electric Metronome?

How to adjust a Franz LM-4 Electric Metronome? I have a Franz LM-4 electric Metronome. I don't think the company repairs them anymore. Yes, there was something wrong, since my wife couldn't adjust the beats per second. I opened it up and found that the center screw needed to be tightened to the adjustment shaft - BUT at what position of the shaft?
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Guest [Entry]

I just fixed mine! All you need to adjust is the three screws holding the needle beam in place. The angle of that wire is determined by the position of the needle when you are tightening everything up -- if you tighten everything up and the needle isn't at dead center, then 60 bpm will be WAY too slow. Use 60 because you can set it with a watch. I can't say i have it to a science, but I can say that it's all in where the needle is set when you tighten everything up.