Fitting a manual cam chain tensioner

[Gnasher]

Get the bike fully warmed up, once a month or so, just hold it in second gear and rev it to 7- 8k for a minute or so.  Dual carriageway or motorways are excellent for this so as not to fall foul to speeding.  Alternatively just rev it to the same sort of level and gear more often but in burst every few days. Like accelerating on to a dual carriageway.