SINGER White 5500 - Manual (Page 61)

7. TfiOUBLiSHOOTlNG CHART
Probable Cause
Correct
Trouble Operation
Not plugged in properly.
Page 7
Machine Power supply switch is not on.
7
does not sew
Thread is stuck in the hook groove.
57
Lack of oil. 58
Making noise Dust of thread jamming the rotary hook. 57
Running slowly Dust of thread jamming the feed dog. 57
Thread is stuck in the hook groove.
57
Improper threading.
14
Upper thread tension too tight.
24.26
Needle bent or blunt. 9
Breaking
upper thread
Improper needle setting. 9
Removing fabric when take-up lever is not in
the highest position.
23
Upper thread too thick or too thin for needle
used.
7
Improper threading.
12
Breaking Lower thread tension too tight.
12
lower thread
Dust of thread jamming the bobbin case or
around the spring of the bobbin case. -
Improper needle setting. 9
Skipping
stitches
Needle bent. 9
Improper needle and thread for the fabric. 7
Improper upper threading.
14
Too much oil.
58
Stitches
not locked
Upper thread tension too loose.
Improper tension of the lower thread.
24.26
12
Improper needle for the thread. 7
Upper or lower thread tension too tight.
24.26
Improper threading of upper or lower thread.
12.14
Needle too thick for the fabric.
7
Wrinkled
fabrics
Stitch length too long for the fabric. —
* When sewing very fine fabric, place thin paper
underneith the fabric for better results.
59