PDFWAC 296-806-48056
Make sure jointers with horizontal cutting heads meet these requirements.
(1) You must make sure the cutting head on hand-fed jointers is cylindrical:
(2) You must install and adjust the knife blade so it does not protrude more than one-eighth inch beyond the body of the head.
(3) You must make sure the opening in the table meets all of the following:
(a) Is kept as small as possible.
(b) The clearance between the edge of the rear table and the cutting head is not more than one-eighth inch.
(c) The table throat opening is not more than two and one-half inches when the tables are set or aligned with each other for zero cut.