[Healeys] Timing chain tensioner

[Stephen Hutchings]

Well, after mounting the timing tensioner, my workshop manual says to 
release the tensioner for operation by turning the allen key anti- 
clockwise, which makes sense, because you've locked it up by turning 
it clockwise...
so why on earth does the Haynes manual say " under no circumstances, 
turn the allen key anticlockwise, or force the slipper head into the 
chain.."
Have they got this, like their strange description of front wheel 
bearing replacement, completely wrong?

Stephen, BJ8