MSW Motor Technics MSW-STC-150 Manual De Instrucciones página 35

i) Insert one leg of the profile punch into each hole in the mount, then tighten
the nuts so that the punch legs and the mount make full contact.
ATTENTION: If you have problems inserting the profile ends into the unit, first
loosen the 4 screws at the bottom of the guide carriage (see picture below).