Question about 1989 BMW R 80

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Clutch go's when engine hot ,comes back when cold r80rt 1989 (h)

Last time rode bike the clutch leaver got less and then stopped working with no drive till cold r800 rt

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Air cooled BMW's have a dry clutch, like most cars, so there is no oil.
The clutch is operated by a push rod from the rear of the gearbox. There is a plastic type thrust or throw out bearing on this push rod on some later R 80's; mine was a 1989 model. When the engine gets hot, the plastic thrust bearing expanded and bound in the push rod bore. The clutch became very difficult to use. Try this first as new ones are relatively cheap and even cheaper, the plastic part can be milled to reduce the diameter by a millimetre or two. This pushrod is accessed from the rear of the gear box. You may need to disconnect the swing arm or the gearbox to get this push rod and bearing out, but its not a major job. Try this before opting for any major replacement !

Posted on Oct 29, 2013

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Sound like your cluch plates are sticking due to lack of oil you will need to service the clutch and keep an eye on oil level

Posted on Jan 20, 2009

  • Rory
    Rory Oct 29, 2013

    Air Cooled BMWs have a dry clutch. I had a similar problem. Clutch action got pregressively heavier when the engine was hot.

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