[MBEngineering]

HI Speed Buggy
looking at your photos, the chains are well stretched as the tensioner is fully out and the idler gear (with the teeth missing) has chopped through the chain case inner casting, you need to do the check that Grady has described and check the inner chain wheel in the inter-gear for wear/damage, what mileage has the engine covered? and has it had any work? you could be lucky and the inner chain wheel is still in one bit or only just, before the teeth come off and you loose the cam timing on the R/H side.

regards mike