Tachometer not working correctly

TCW

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Joined
Jul 27, 2007
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#1
Hello I just got a 1977 Suzuki TS250 and the tachometer is not working, the screw on line has had the part that screws onto the tach broken off, but the cable is still sticking out and spinning, but if I put it into the tach all it does is turn the dial at the speed it is spinning until it goes as far as it can go. So... the needle in the tack tries to spin at the engine rpm instead of indicating it, ne ideas?