a) Before operating the machine, the guide rails on the top of the machine must be adjusted to accept the product to be processed. b) One guide rail is fixed in place, and the other guide rail is adjustable to the width of the web. c) Place a section of product on the infeed platen, loosen the two knurled thumbscrews, adjust for product width, and then tighten the thumbscrews again. Allow a 0.05 mm to 0.076 mm (.002 to .003”) clearance at both the edges of the material. Be sure the rails are parallel before tightening the thumbscrews.