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Old Feb 22, 2017 | 11:09 AM
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Default Primary noise
I have a noise coming from my primary. While I'm riding I don't hear anything but when I let off the throttle I'm hearing a whistle sound. As soon as I pull in the clutch, the whistle noise goes away. What are y'alls thoughts on this?
 
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Old Feb 22, 2017 | 11:33 AM
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How many miles? Sounds like a loose chain.... Time to pull the primary cover and inspect. Do you have factory service manual? If not get one....
 
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Old Feb 22, 2017 | 12:13 PM
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25k miles I tightened the chain and it got a little better. But it's still there.
 
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Old Feb 22, 2017 | 12:28 PM
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inner primary bearing, or transmission mainshaft needle bearing
 
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Old Feb 22, 2017 | 02:23 PM
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Any way to diagnose one from the other?
 
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Old Feb 22, 2017 | 03:21 PM
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Got any oil leaks? If the inner primary bearing is shot, that seal is usually shot too. Same with the transmission bearing.
 
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Old Feb 22, 2017 | 03:51 PM
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No leaks
 
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Old Feb 22, 2017 | 05:20 PM
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When mine did that it was a transmission main shaft bearing starting to go out.
 
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Old Feb 22, 2017 | 09:35 PM
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Definitely what I am afraid of bro. How did you diagnose it was that and not the inner primary?
 
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Old Feb 23, 2017 | 06:30 AM
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Originally Posted by Khshockey44
Definitely what I am afraid of bro. How did you diagnose it was that and not the inner primary?
You have to start taking things apart and have a look.
 
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