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What is this cover and do I need a gasket for it?

Discussion in 'XJ Technical Chat' started by juntao, Jul 30, 2025.

  1. juntao

    juntao New Member

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    Hi everyone.

    I have a XJ550 where the cover on the right side is busted. I think someone dropped in the past and just plain broke.

    Since I'm not much of a mechanic, but from what I googled its the cover for the oil pump. Is that correct? This is the right hand side.

    Also, I'm guessing there should not be a gasket there? This bike has been sitting for a while and has not been started, but its oil in it, but I'm thinking if I start it, it might leak. So better safe than sorry I guess.

    Thanks all from a new XJ550 owner. (A good view to show that there isn't a gasket is the "Under picture".
     

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    juntao, Jul 30, 2025
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  2. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Yes you are correct, no gasket under that side (only the matching left side "YICS" cover does use a gasket). If it leaks oil from there, it means the seal (actually, a block-off plug) in the crankcase is leaking and should----depending on how bad it's leaking----be replaced.
     
    chacal, Jul 30, 2025
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    Timbox likes this.
  3. co.dirtbiker

    co.dirtbiker Active Member

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    There should not be fluids behind that cover, so nothing to leak. On my 900 I don't recall there being a gasket the first time I took it off, but I did add one just to keep moisture out. Not sure if it had one originally. The left side did.
     
    co.dirtbiker, Jul 30, 2025
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    Timbox likes this.

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