SM 72 Z roller setting

What is the correct method to set the Z roller in SM72 , in which there are two pneumatic cylinders controlling the roller contact?

 

on the SM102 cd. you set the z roller to the water form 2mm stripe.
then drop the forms to the plate water form included. you should be able to put a card inbetween the z roller and the water form. un lock the control levers and back the adjustment off . bring the lever in turning clockwise until it is flush with the block. then back it off 1/2 turn and lock it down. check it by dropping the intergrated roller to the integrated postion. should touch all the way across. deactivate the roller and you should have space in-between. take the forms off, and it should be in the integrated position again