Vetus Flexi coupling

Paul Osterberg

I found several lose nuts on my Vetus flexi couplig,
How hard shall they be torqued? I do not need Nm, but like Firm, Hard or super hard?. is it OK to put the engine in gear to have something firm to torque against else difficult to prevent the coupling from rotating 
Paul on SY Kerpa SM#259

Join to automatically receive all group messages.