Download the manual for model Kenmore 15815250 mechanical sewing machine. Sears Parts Direct has parts, manuals & part diagrams for all types of repair A Perfect Manual PDF for a Vintage Kenmore Sewing Machine I just found on the Vintage KENMORE 158.1525 158.15250 158.15251 158.15152 PDF Manual Download.Up for sale is a PDF copy of the Instructions / owners manual for a Kenmore / Sears Model 158.1525 158.15250 158.15251 158.15152 Sewing machines. SOURCE: instructions for theading a Sears Kenmore Sewing machine model 158.14000. all machines thread the same. TTN tension,take up, needle.