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Thread: Whirring from primary with clutch released

  1. #1
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    Whirring from primary with clutch released

    Noticed a whirring noise when the bike is in neutral and the clutch released. It dies down pulling the lever in. Not liking it but that sounds like a tranny issue? Haven't had the primary off. Just dida chain and clutch adjust.

    039R

  2. #2
    Senior Member Chicknstripn's Avatar
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    Sounds like the issue is in your clutch assembly. Probably a bearing on its way out.
    Or could even be as simple as improper fluid level.
    As long as you’ve adjusted the clutch correctly, then the next place to look is inside the primary. I’d focus on the clutch assembly since the noise changes with engagement/disengagement of the clutch.
    I highly doubt the issue is in the transmission.

  3. #3
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    Thanks, The sound reminded me of a throw out bearing going out.

  4. #4
    Senior Member Cooter's Avatar
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    There is a throw out bearing but rare to fail. A whirring noise is usually a primary chain thats too tight or bad transmission input shaft bearing.

  5. #5
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    I did adjust the primary but running it till warm then with the bike idilkng I turned the adjuster till I could hear a whine start. Then backed it down till it stopped.

    Can the input bearing be replaced from the primary area?

  6. #6
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    Question, did this start occurring after doing a clutch adjustment at the inspection cover? Wondering if your diaphragm spring popped off the lock plate for your clutch adjuster.

  7. #7
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    No. I did the adjustment due to the noise. Looking at the manual, it could be the clutch shell bearing.

  8. #8
    Senior Member Chicknstripn's Avatar
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    Open the primary and inspect clutch/primary components before you buy any parts.
    My 2cents



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