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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 11 May 2009
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re-torquing head bolts

Hi!

I'm finishing top end rebuild of my 2KF XT600 and have one dilemma.

Somewhere (I believe on the forum) I red that after a rebuild and some mileage traveled I need to re-torque bolts holding the head. The same thing said the guy from the machine shop where I brought head for a valve job.

The trouble is - I can't find at what mileage I need to do this.
Is something else that needs to be done too?

The cylinder was not bored nor rings changed because they were in good condition and within specification. The main reason for the rebuild was a leaking cylinder gasket.

Thank you!
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Old 11 May 2009
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Head

Hi, re-torque the bolts at 800kms (500miles), change the oil and filter at that mileage aswell. That,s what I did and everything seems ok.
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Old 11 May 2009
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OR

You can tighten them till they strip then back a quarter turn
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Old 11 May 2009
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Quote:
Originally Posted by Tenere Tom View Post
OR

You can tighten them till they strip then back a quarter turn
LOL! BTDTGTTS

500 miles is the usual recommendation. The engine has gone through a few heat cycles in the period and things have settled down. Usually it's just a matter of nipping them up a small amount. But the mileage isn't critical.
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