Answer:
• skipped stitches
1. Type of needle - may be wrong for the fabric
2. Stitch length - may be too long
• machine jams
1. Bobbin threading- may be incorrect
2. Thread-may be coarte or knotted
• needle breaks
1. Tension may be too tight
2. Needle position - may be wrong
• no fabric moment
1. Setting of stitch regulator - may be ret to 0
2. Feed dog-may be lowered
• seams pucker
1. Tention may be too tight
2. Needle may be too big or dull
• thread breaks
1. Size of the needle-may be too big or small
2. Type of thread uneven may be too thin,
or knotted
• Fabric jams in machine
1. Thread ends-may need to be held at the start of stitching
2. Needle may be too big
