when to rebuild



1 reply to this topic
  • Guest_Guest_*

Posted August 07, 2000 - 03:39 PM

#1

has anyone had to rebuild there yamaha yet...

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  • GPS Dual Sport

Posted August 13, 2000 - 07:35 PM

#2

I have over 4000 miles on my 98 WR and only trip inside the motor was a valve adjustment at 800 miles. The exhaust valves tightened up to the lower end of tolerance.

I have heard that some YZ400's that have raced hard have problems with the small end bearing on the connecting rod.




 
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