primary chain slack

[heavyhitter]

Hey guys, the primary chain (72 sportster) keeps developing excessive slack. I replaced the tensioner it and still does the same. I think that the tensioner must be slipping. Any similar experieces out there? or suggested solutions?

Thanks   

[moscooter]

 

You're talkin' about a 38 year old bike.  Has the primary chain (which can/will stretch) EVER been replaced?  Your solution could be as simple as replacing that chain.....while examining the sprockets for wear while doing so.

[heavyhitter]

38 years, your kidding!!!!  The guy that sold it to me said it was like new.


Good thought, I will have to look at the chain as the possibkle cause.

thanks