Sewing Machine Maintenance, Faults, and Remedies

Question 1

What does the maintenance of sewing tools and equipment refer to?

Accepted Answer

Regular care, cleaning, and proper storage of implements

Question 2

Why is it important to store metal tools like shears and pins in dry conditions?

Accepted Answer

To prevent rust and corrosion

Question 3

What is a key rule for maintaining the sharpness of cutting shears and scissors?

Accepted Answer

Use them exclusively for cutting fabric and threads

Question 4

How should a tape measure be stored to prevent creases that distort its markings?

Accepted Answer

Rolled up loosely or hung up

Question 5

What tool can be used to both sharpen and clean pins and hand-sewing needles?

Accepted Answer

An emery bag

Question 6

Which part of the sewing machine accumulates lint and dust most quickly and must be brushed daily?

Accepted Answer

The bobbin case, feed dog, and needle bar

Question 7

What type of oil should be used to lubricate a sewing machine?

Accepted Answer

High-quality sewing machine oil

Question 8

Why should you NOT blow into the sewing machine with your mouth to remove lint?

Accepted Answer

Moisture from your breath can cause internal rust

Question 9

What should you do immediately after oiling a sewing machine before sewing a garment?

Accepted Answer

Stitch on a piece of scrap fabric for several minutes

Question 10

Which of the following is a common cause of a sewing machine needle breaking?

Accepted Answer

The operator is pulling or pushing the fabric forcefully

Question 11

If the upper thread keeps snapping, what is a recommended remedy?

Accepted Answer

Rethread the machine completely and loosen the upper tension slightly

Question 12

What is a likely cause of the lower (bobbin) thread snapping?

Accepted Answer

The bobbin tension is too tight or the bobbin is wound unevenly

Question 13

How can skipped stitches caused by a blunt or bent needle be corrected?

Accepted Answer

Replace the needle with a new one of the correct size

Question 14

What is a primary cause of puckered or gathered seams in lightweight fabrics?

Accepted Answer

The thread tension is too tight or the needle is too thick

Question 15

What is the most likely cause of a sewing machine running heavily or feeling stiff?

Accepted Answer

Lack of lubrication (dry joints) or lint jammed in the bobbin race

Question 16

What is the main cause of uneven or loopy stitches on the fabric?

Accepted Answer

The upper thread tension is unbalanced with the bobbin tension

Question 17

When replacing a sewing machine needle, which way should the flat side of the shank face on most modern machines?

Accepted Answer

Towards the back

Question 18

What is the best way to visually test and adjust thread tension?

Accepted Answer

Use two different colors of thread on scrap fabric

Question 19

When storing a sewing machine, why should the presser foot be lowered onto a scrap of fabric?

Accepted Answer

To relieve tension on the spring mechanisms

Question 20

Where should oil be applied on a sewing machine?

Accepted Answer

At designated oiling points where metal parts meet and move

Strong work.