Maintenance Hints - Husqvarna Viking 3600 Operating Manual

Maintenance hints
In most cases poor sewing results are due to a blunt or
damaged needle. Therefore always examine the needle
first before taking any other action.
Unattractive stitches
—
unattractive seam
1. The needle is incorrectly inserted. See page 6.
2. The needle is bent or blunt. Change the needle.
3. The thread tension is not correct. See page 12.
4. The machine is incorrectly threaded. See pages 7—8.
5. The needle, thread and fabric o not correspond. See
table, page 6.
6. The lower thread is not the same thickness as the
upper thread.
7. The lower thread is unevenly wound. See page 8—9.
8. The bobbin is incorrectly inserted in the bobbin case.
See page 10.
9. Lint or thread is wrapped around the spindle of the
shuttle. See page 30.
Needle breaks
1. Needle is incorrectly inserted. See page 6.
2. You may have helped the machine to feed through the
fabric by pulling it. The needle can then easily come
against the throat plate and be broken.
3. The needle is not the right size. Use Husqvarna 705 H
needles.
Upper thread breaks
1. The needle is incorrectly inserted. See page 6.
2. The needle is bent or blunt. Change the needle.
3. The upper thread is incorrectly threaded. See page 7.
4. The upper thread is too tightly tensioned. See pages
12—13.
5. The thread is knotted.
6. The needle and thread do not correspond. See table,
page 6.
7. The hole in the throat plate is chipped and has sharp
edges. Polish with an emery cloth or change the throat
plate. See page 30.
8. The needle groove or needle eye has sharp edges.
Change needle. See page 6.
9. Thread is entangled on the spool pin.
Lower thread breaks
I. The bobbin case is incorrectly inserted. See page 10.
2. The lower thread is incorrectly threaded. See page 10.
3. The lower thread is too tightly tensioned. See page 12.
4. The bobbin is unevenly wound. See pages 8—9.
5. The bobbin is wound too full. See page 8.
6. The throat plate hole is damaged. Polish it with an
emery cloth or change the throat plate, see page 30.
7.
Lint or thread is wrapped around the spindle of the
shuttle. See page 30.
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