Broken cam chain guide

[Mr Helicop]

Thought the bike was rattling a bit more than usual and on inspection I found the broken cam chain front guide, the adjuster seems to work as it should and I can't see any other problem. Anyone of you guys seen this before? wear and tear or what might have caused it?

[Bryanj]

I think you will find thar the grooves in the cyĺinder are worn (those pins have no rubber left) which has allowed it to rattle up and down thus break.

I have seen it before but not often, could be it was assembled worn by a PO

[Mr Helicop]

Yes it was fitted as shown when I serviced the the head - I had no idea that the pins should have rubber on them, I take it the new one should have the rubbers which should cure the problem?

[Bryanj]

The rubbers are not seperate but the whole assembly is covered. You need to make sure that the "pins" fit tightly into the machined recesses

[Mr Helicop]

Thanks very much for your help, I will see how it fits when it arrives.