Hi Tony
yeah, the manual ones were discussed at some stage a while ago, and the common question was "when to tighten". Over tighten and the blades, tensioner, and chain will wear, too loose and your chain could jump a tooth on the cog, neither of which is a good idea!! I spoke to a 'dodgey - dealer' who said to tighten them up every couple of thousand miles. Bit too much like stabbing in the dark!
What I can't understand is the stupidity of Honda making these crappy bits of equipment that continuously fail. If it was something that just went and no other damage was caused, well fine, but christ if you are unlucky and these go, you could end up with a shagged motor.
I feel better after that mouthing off.

I'm in the happy place again. Think happy thoughts.
Off I go to order more tensioners!! Woo Hoooo!!

RQ.
The Stig of 2 wheels as well as 4 !