Primary or secondary chain

[murwullambah]

Hi, does anybody know if both chains suffer from wear or is it just the one, just been reading up on replacement procedures, so do we replace the primary chain or the secondary chain, thanks.

 

[tanz]

It's only the lower single row chain and guides that seems to have an issue, but as you have to pull the 2ndary off to access it, I'd suggest replacing both. Preferably with an upgraded double row primary chain and guides.