Description Elna Lotus Sewing Machine Service Manual Includes Parts List. Examples include: * Hook timing adjustment. * Replacing the printed circuit board F-K. * Replacing the needle thread plate. * Feed dog height adjustment. * Needle drop position adjustment. * Clearance between needle and tip or the rotary hook. * Upper thread tension adjustment. * Thread cutter switch adjustment. * Troubleshooting examples: * Skipping stitches. * Fabric not moving. * Breaking upper thread. * Breaking bobbin thread. * Needle breaks. * Noisy operation. * Self diagnostic test. * Parts list with diagrams. * Much more! 55 page service and parts manual. English language. Elna sewing machine service manuals Please note*** This is a service manual. If you need the owners/instruction manual, please visit our shop.