Description Husqvarna Viking 936 HuskyLock Sewing Machine Instruction Manual. Includes: Threading your machine. Adjusting tensions. Change needle. Adjusting presser foot pressure. Fine tune stitch width. Needle, thread, fabric chart. Disengaging upper cutter. Sewing speed. Free-arm. Sewing techniques. Serging, gathering and decorative edges. Cleaning. Optional accessory feet. Special hints and trouble guide. Much more! 83 page instruction/owners manual. Husqvarna Viking 936 HuskyLock Sewing Machine Instruction Manual.