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I just wanted to add the solution that worked for me, I think it was hinted at by someone else here but they didn't give the whole solution. I have a Ricar 806 also Japanese made, which suddenly started running at full speed on its own. The problem was the capacitor in the foot pedal control. I discovered that the capacitor is present to prevent the machine interfering with the TV and radio (causing static to old style tuners, not really relevant these days...). Over time the capacitor leaks charge and eventually dies, causing the machine to run on its own at full speed. Since the capacitor is redundant you can simply remove it from the mechanism, which fixes the pedal. In my case the capacitor was wired in parallel with a resistor, and both could simply be removed by unscrewing them from the assembly. Hope this saves someone else some time!
quilter1012, thank you so much! This totally fixed my issue and I wouldn't have figured it out otherwise! My husband was about to rewire the whole thing and this simple plug fix solved everything!
I know you posted this 5 years ago for someone else, but it was exactly my problem - thank you so much!
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Posted:Mar 5, 2009
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