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1979 GS750E-No reading from speedometer and tachometer.

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    1979 GS750E-No reading from speedometer and tachometer.

    Bought bike w/o both working. Undid the speedo cable and the internal cable is broken. Was able to find one for $17 on eBay. Is the tach cable going to be that easy of a fix? I know it goes into the top part of the engine.

    #2
    Depends... Things that might cause the tach to not work include:

    1: Broken tach cable (replace cable)
    2: Gummed up tach (open tach and lubricate the internals)
    3: Damaged tach drive gear on either the holder going into the cylinder head (replace drive gear in holder)
    4: Damaged cam side drive gear (replace cam and most likely the holder drive gear as well).

    Hope it's not the cam for your sake. That requires pulling the cam to fix but not likely a problem on your model.
    http://img633.imageshack.us/img633/811/douMvs.jpg
    1980 GS1000GT (Daily rider with a 1983 1100G engine)
    1998 Honda ST1100 (Daily long distance rider)
    1982 GS850GLZ (Daily rider when the weather is crap)

    Darn, with so many daily riders it's hard to decide which one to jump on next.;)

    JTGS850GL aka Julius

    GS Resource Greetings

    Comment


      #3
      Greetings and Salutations!!

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      DON'T DO THESE THINGS
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      Comment


        #4
        Change the cable. Unless the oring that seals the tach drive into the cam cover is leaking theres no reason to dick with anything else.
        MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
        1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

        NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


        I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

        Comment


          #5
          At least the cable is cheap.

          Comment


            #6
            Also some advice on the gear indicator. It's on but doesn't show what gear i'm in.

            Comment


              #7
              Originally posted by alingo2001 View Post
              Also some advice on the gear indicator. It's on but doesn't show what gear i'm in.
              This might not be any help to you, but on my '86 550 the wiring had been pulled from the circuit board on the back of the display. It didn't look like they had been held down with anything other then the solder so it wouldn't have taken much to break them free. I fixed mine with a soldering iron and a little hot glue.

              Comment


                #8
                Just replaced the speedo cable. Works great.

                Comment

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