Pfaff ambition Owner's Manual - Page 47

Bobbin thread breaks Did you insert the bobbin properly? Is the stitch plate hole damaged? Is the bobbin area clean? Is the bobbin wound correctly? Check the bobbin thread. Change the stitch plate. Clean lint from bobbin area. Wind a new bobbin. The seam has uneven stitches Is the thread tension correct? Are you using too thick or slubbed thread? Is the bobbin thread evenly wound? Is a correct needle used? Check needle thread tension and the threading. Change the thread. Check bobbin winding. Insert a proper needle correctly, see page 2:9. The machine does not feed or feeds irregularly Did you thread the machine properly? Check how the machine is threaded. Has sewing lint collected between the feed dogs? Remove the stitch plate and clean the feed dogs with a brush. Have your sewing machine serviced regularly by your local authorized PFAFF® dealer! If you have followed this trouble shooting information and still have problems, take your sewing machine to your dealer. If there is a specific problem, it is a great help to test sew with your thread on a scrap of your sewing fabric and bring it to your dealer. A sewing sample will often provide helpful information. Non-original parts and accessories The warranty does not cover any defect or damage caused by use of non-original accessories or parts. Maintenance 5:3