Ummmm guys, i have a 2 inch primary belt, does anyone know how often i need to renew it, i know when the old one breaks is a good time, i found that out last time it broke but the cause was a build fault which was not my doing and i have chain secondary drive so i have no idea.

Cheers thanks Dave, no its not open which makes it a bit harder to keep a check on it.

Oh dear....looks like i better put some vented goodies on my shopping list.