Owner's Manual
Page 31
... I Hook race is stamped on needle plate slot. Adjust tensions as it wilt go and be sure that the long groove faces you, and flat part of needle away from you. Clean and oil hook raceway. Poor or knotty thread used. Needle bent. Remedy: Push needle up as far as instructed... 4 ShOOtUlf? 1. Insert new needle. Check and correct threading as instructed. Use correct needle and thread. 2. Burrs or sharp edges on needle plate. Remedy: See remedies listed under 1.
... I Hook race is stamped on needle plate slot. Adjust tensions as it wilt go and be sure that the long groove faces you, and flat part of needle away from you. Clean and oil hook raceway. Poor or knotty thread used. Needle bent. Remedy: Push needle up as far as instructed... 4 ShOOtUlf? 1. Insert new needle. Check and correct threading as instructed. Use correct needle and thread. 2. Burrs or sharp edges on needle plate. Remedy: See remedies listed under 1.