Hi, as regards the chain tensioner, I would advise fitting the original tubes and bracket, which are available from In motion, and prevent the chain jumping the gearbox sprocket and smashing the casing which is a common problem, some people have fitted a universal tensioner and used the long bolt ...

Hi, I have recently replaced the idler gear on my 200 Cota, and I am struggling to fathom the correct way to tension the assembly once refitted.

Does anybody have any experience of reassembling correctly?

New pawl gear has also been fitted, along with the correct shims, and new return and shaft ...