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  1. #1
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    How to open a Shimano SIS shifter?

    Hi all.

    My newly purchased used bike has Shimano SIS shifters. The left one has a sticker saying "Light Action", and they have model number SL-RS30 printed on the bottom side.

    I need to open them, because they do not work, but I can't find out to get them opened. There is one screw on the bottom of each, and when that is loosened, the shifter can be slided off the steer bar. But I cannot open the shifter box itself.

    Does anyone know a magic trick on how to open the shifter box? (and yes, I tried "Open Sesame!" but it still wouldn't open)

    Here are two pictures of the shifters, the last one including my left foot (taken with my phone, so sorry about the quality --of the pictures, not my foot):




  2. #2
    Eat my Dust... n00bs jag89's Avatar
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    Quote Originally Posted by faetter
    I need to open them, because they do not work....
    typical 'SIS' if you undo the screw that is underneith the shifter on the back there sould be one or 2 very small screws...you need to undo these!

  3. #3
    Senior Member mechBgon's Avatar
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    Don't open them. Take it back to where you got it, and have them set them up right.

  4. #4
    Eat my Dust... n00bs jag89's Avatar
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    Quote Originally Posted by mechBgon
    Don't open them. Take it back to where you got it, and have them set them up right.
    to be honest i dont think this is new new, i think he bought it second hand of someone, as the screws are rustly!!

  5. #5
    Senior Member mechBgon's Avatar
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    I'm laying 4:1 odds that the shifters are actually operational, but just set up incorrectly and 1:10 odds against anything being accomplished by opening them if they aren't working.

    With that in mind, faetter, try Park Tool's instructions on general derailleur & shifter adjustment before you open those up. http://www.parktool.com/repair/byregion.asp?catid=53

  6. #6
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    Thank you all for your help. I bought the bike on a Lost & Found auction, so there is no one I can return the bike to. But if my problems with the shifters can be solved by adjusting the cables that sounds like an easy solution, so I will try that first. Park Tools' guide seems very user-friendly with pictures and all, so I think I might even have a chance on making it work.

    Thanks again for your replies!

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