EVO All Evo Model Discussion

Comp sprocket

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Old Sep 4, 2025 | 06:25 AM
  #11  
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Hard to believe you would be able to hear a chirp from inside the primary.. I'd be look for something else up front that could cause it.. But if you have concerns about the comp sprocket, check to see that the teeth are pointed.. If so time to replace.. You should also check the chain for excessive wear..
 
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Old Sep 4, 2025 | 09:31 AM
  #12  
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Head gasket failure will cause a chirp, often quietening when warmed up. Up to a point of course.
 
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