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Thread: 1985 R80 won't down shift unless I blip the throttle

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  1. #1
    Registered User jimbc's Avatar
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    1985 R80 won't down shift unless I blip the throttle

    Starting last season my 85 R80 won't down shift unless I blip the throttle. I'm the original owner and have never experienced this before. Anyone know why? Thanks.

  2. #2
    jdubeemer jdubick's Avatar
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    Quote Originally Posted by jimbc View Post
    Starting last season my 85 R80 won't down shift unless I blip the throttle. I'm the original owner and have never experienced this before. Anyone know why? Thanks.
    I have a 78 R100/7 and was having the same problem. You need to have your splines lubed. You have to back the transmission out to get to the splines in question. There is probably a link in the forum for the procedure or you can contact your favorite Beemer wrench. Should clear it up.
    Jim Dubick
    Boaz, Alabama
    R1200RT,R100/7,KLX250
    BMW MOA, BMW MOALABAMA

  3. #3
    Registered User jimbc's Avatar
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    Thanks for the info, Jim

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    Here's a spline lube tutorial with pictures:

    http://www.webbikeworld.com/t2/spline/

    Or here's Snowbum's article. More verbose but quite thorough:

    http://bmwmotorcycletech.info/inputsplinesthrowout.htm

    My RS was shifting rough & hard to find neutral, etc. A spline lube made a world of difference. Be sure you clutch is adjusted properly, too:

    http://bmwmotorcycletech.info/clutch.htm near the bottom.
    1983 R100RS (Sold)
    2004 R1150RT
    BMW MOA 181289
    ABC 13558

  5. #5
    Registered User jimbc's Avatar
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    Thanks for that Mark

  6. #6
    nc bmw driver
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    Here are some very good videos on how to do a spline lube.


    http://www.youtube.com/watch?v=uVKPGcf0xag
    http://www.youtube.com/watch?v=p8dJzD42eYI
    http://www.youtube.com/watch?v=p0Kw38blwfg
    http://www.youtube.com/watch?v=qXXnNQf2F_k

    There is some colorful language used, but very good detailed information provided.

    Regards

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