Viking Platinum 16 Guia do Utilizador descarregar pdf (Página 29)

Page 29

Correcting Common Issues

Skipped Stitches Corrective Measure

• The needle is damaged, dull,

bent, or installed improperly

• Incorrect needle size

• Very tightly-woven fabric

(such as batiks)

• Needle has not been

positioned properly

• Thread tension too tight

• Improper threading

• Replace the needle often, normally once or twice per day for continuous

quilting or at least once per quilt. Use PLATINUM™ 16 quilting machine

recommended needles.

• Always change the needle if the needle has struck any hard object such as

a straight pin, etc. The tip of the needle can become damaged or burred,

resulting in fabric damage as well as skipped stitches, thread breakage or

shredding.

• Always change the needle if it has been hit, bumped or pulled off center

while maneuvering the machine about the quilt. A slightly bent needle can

be a major cause of skipped stitches.

• Check for the proper combination of needle size and thread weight

being applied to the quilting operation. Some fabrics used in quilting may

constrict or impede the thread passing through the front groove of the

needle. This diminishes the loop lift required for stitch formation. Typically,

a larger needle will solve the problem; however, it has been found that

certain smaller sizes of needles as well as the use of ball-pointed needles

solve some speciﬁc problems.

• Position the needle properly to the needle bar. Inspect the position of the

needle to make sure the needle is at the 6 o’clock position (see ﬁgure 16,

page 20)—If you stand directly in front of the needle (facing the bobbin

case side of the machine), you will see the entire needle eye directly facing

you. This is 6 o’clock position.

• Make sure (1) the needle is installed all the way into the needle bar to the

needle stop hole in the needle bar, (2) the long groove in the needle is

toward the front (bobbin case side), and (3) the scarf/scooped out part of

the needle is toward the handwheel. The needle can sometimes be rotated

to 5 o’clock (slightly right) or 7 o’clock (slightly left) in order to adjust for

a more positive thread loop pickup by the hook point.

• Loosen top tension. Re-check top and bobbin tension (see pages 19-20).

• Inspect that the thread take-up lever, thread stirrup or tension spring are all

threaded correctly.

The Needle Breaks Corrective Measure

• The needle is bent or not

installed properly

• Replace or correctly change the needle. Make sure that the needle is

pushed up into the needle bar clamp until it can go no farther (visually

check that it is up to the top of the stop/sight hole above the needle bar

clamp screw). Failure to do so can cause damage in the bobbin area and

throat plate.

• The needle hits the needle

plate

• Correctly position the needle, needle plate or hopping foot. Replace

needle with a new one.

Stitches are Puckered Corrective Measure

• Balance the tension of the needle thread after ensuring the bobbin tension

is adjusted correctly (see pages 19-20).

• Tension is not balanced

• Replace the needle with a size better suited to the fabric.• Needle too large for material

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