HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
91rmMike

Yz426 timing chain length

4 posts in this topic

What is the correct length of the timing chain? I bought a hotcams chain and with the tensioner removed I can't get it over both came without rocking the cam under the chain and then just barely getting it into its cradle. Getting the dot level with the case is a nightmare doing this. Should it not be able to wrap over the cams with the tensioner completely off?

Share this post


Link to post
Share on other sites

Can't edit on mobile.

Once the cam is rocked under the chain and in place it has slack in it but not very much, so it's not absurdly tight, just an absolute nightmare.

Share this post


Link to post
Share on other sites

It is normal that the cam chain cannot be assembled over the second cam with both cams in their seats.  Has to be done by rocking the second cam, preferably the intake, under the chain, then rolling it down into place in the head.  Usually there isn't room to allow it to pass between the sprocket and the inside of the chain tunnel, anyway.

Share this post


Link to post
Share on other sites

Well, got it in there and running. I ended up rocking the exhaust cam under it, would have tried it with the intake had I seen your post. I was real close to taking it to Yamaha. New to 4 stroke maintenence so I was worrying every step of the way.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0