Clutch and general reassembly

[Ageing Rotarian]

Gents, just putting the clutch etc back together after being apart for a few months and was wondering if there was anything in particular I have to be mindful of? For my sins the chain tensioner popped apart and I have just placed it back in the housing and fitted it, seems to offer light tension on the chain but I guess this is normal?
As always gents, grateful of any suggestions
All the best
Roy