YZF / WRF timeing chain replace?

Joined
Jun 15, 2001
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#1
Hey any of you thump chumps ever herd of replacing a timeing chain at normal intervals on dirtbikes? I have not but we are dealing with a new breed of High performance 4 strokes now and some of the older YZFs and WRFs are starting to see the hours and miles racking up on stock motors.
A fellow YZF owner is replacing his due to swashing noise. He wants to know if he needs to replace or what and how to check the tensionor also.
If the chain dose wear, should the driving and cam sprockets be replaced too?
 

Hokie

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Sep 28, 2000
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#2
Since I'm such a chump I'd probably go ahead and replace the whole bike.:p
 
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#4
I change the cam chain with every other piston. I've yet to see any wear on the cam or crank sprockets that would warrant replacement of those parts. The tensioner rubbing block wear is easy to check visually.
 
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Aug 3, 2001
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#5
Replace the chain, paticularly if it makes swooshing sounds or a rattle at startup that goes away quickly. Chain failure results in very bad things happening, piston meets valve.
 

wayneo426

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#6
do it, just do it!

If im that far inside the black hole, I would replace everything.
 

weimedog

Damn Yankees
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#7
I'm liking those cam drive gears more and more...:)