Problem with chain adjustment

[darrsi]

The loosening of the torque arm marlaky was discussed here some time ago and I think the outcome was to do it to be safe - but like you say there is no mention of it in the manual.
But if you do not know the history of the bike then you do not know if the bolt has been replaced and it has been done up too tight before because when done properly you should not need to loosen it because the caliper should rotate and the arm then pivot as the wheel is moved back.
But no harm will be done by loosening whereas there is a chance of harm by not loosening.

:lol