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
erickdj

Damage prevention

7 posts in this topic

I've got a 2008 yz450f that I bought in December 2007. Because of the green/red sticker BS in California, I haven't actually put that much use on the bike. Anyway, after seeing some posts about the cam chain or tensioner failing I thought it might be a good idea to change those up while the bike is parked until the red sticker season starts again in October. So my question is: Should I only change the chain if the tensioner's spring seems fine, or should I just change them out as a set regardless?

Share this post


Link to post
Share on other sites

The tensioner is $45 or so.

If the tensioner plunger extends smoothly throughout the range, with an even amount of force, has no untoward looseness in it, and absolutely cannot be pushed in by bearing against the plunger, it's probably OK.

You decide.

Share this post


Link to post
Share on other sites

Like Gray said, if its smooth to screw in and doesn't have any rough spots then its probably good.

I just replaced my tensioner a couple years ago on my 02 YZ, only because I put a crank in it and thought a new tensioner would help me sleep better at night.

Share this post


Link to post
Share on other sites

IMO, the tensioners from '05 and before were more robust than the current ones are. The older ones like that on your 426 are almost indestructible, and very nearly fool proof.

Share this post


Link to post
Share on other sites

I'm pretty certain that they will not. The new ones are still pretty dependable, but not on the level the old ones were. Then again, they're less expensive.

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