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Scratch sound coming from engine

633 views 0 replies 1 participant last post by  Brollocka 
#1 ·
So I finally got my bike back today after it ran a bearing which was fixed under warranty. On my home I noticed a scratch sound coming from the motor. Now the sound happens for about a second when I reach 4000rpm and it also happens when i'm rolling of the throttle while im riding around. I ended up taking the bike back to Yamaha. Now they say its the cam chain tensioner thats faulty which causes the chain to rub against something. What are your thoughts on this??? Thx :popcorn:
 
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