Grade 7 Review Part 2

What is the cause of needle breaking?

• Belt is too tight

• Needle is blunt

• Needle is too long

• There is no oil

What is the possible cause if the machine runs noisily?

• Too tight belt

• Bearing or shuttle

• Loose screw

• Improper Threading

What is the remedy for lower thread breaks?

• Proper threading

• Tight Belt

• Use the correct size needle

• Proper Winding

What problem will occur if you use the wrong size of a needle?

What is the cause of skip stitches in a sewing machine?

If the machine rotates heavily, the possible cause is thread or dust.

• True

• False

If the fabric does not move, the feed dog must be adjusted to the proper sewing position.

• True

• False

Considering the order of threading in the upper part of the sewing machine, which should be done first?

• Bring the thread to the take-up lever.

• Put the thread in the spool.

• Bring the thread to the thread guide

• Put the thread down.

Stitching is not performed straight and a part of the stitches is sewn in order.

A large or small thread loop suddenly occurs on the upper or lower cloth from the knotting point of the sewing thread.

• Irregular Stitch

• Stitch Skipping

• Ballon stitch

• Missing stitch