[catteeclan]

Originally Posted by Blinx

aha yea i forgot about warranty, i'll drop it into them. would you normally have to drain off any oil to take it out

No oil draining needed. Cam cover off, drive wheel off cam, locking bolt out of tensoiner pin while hold tensioner lever with a magnet, then you can pull the pin out to change the O ring.
Prob is get the cam cover off. Someone on here did say you can wiggle it out of the way with the engine still in the frame but I'm yet to try it.