Pfaff 3334 Instruction Book And Service Manual

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5. Threacflng the Bobbin Case
To remove the empty bobbin, open the cap on the cylinder arm. lift the bobbin case
latch and pull out bobbin case and bobbin. When you release the latch, the empty
bobbin drops out
Next, insert the full bobbin into the bobbin case, as shown in Fig. 8, and hold it firmly
in the case. Puii the thread into slot 1 (Fig. 9} and draw it under the tension spring into
delivery eye 2 (Fig. 10) and through hole 3 in the position finger (Fig. 10). Leave about
three inches of thread hanging from the bobbin case.
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Fig. 8
Fig. 9 Fig. 10
When inserting the bobbin case, make sure that the position finger enters the slot
fn the shuttle race ring and that the loose end of thread does not get jammed be
tween position finger and edge of slot. Press against the bobbin case until you
hear it snap into place.
6. Selecting the Correct Needle
All Pfaff 3334 machines are regularly fitted with System 34 needles. To sew thicker
fabrics on Model C machines, use a System 332 needle which is slightly longer than the
standard needle.
The needle size should be selected in accordance with the thread size and the fabric
weight, in any case, the thread must pass freely through the needle eye. As a general
rule, select the needle as thin as possible, but not too thin to risk needle breakage in
dense and resistant materials.
\
For best results, use a smooth, supple thread with a moderate twist.
Select the proper needle from the following table.
Needle Size Cotton
Silk Synthetic Linen
70 100/3
100/4
120/3
140/3-120/3
80
80/3
80/4
100/3
120/3-100/3
90
70/3-60/3
70/4-60/4
80/3
100/3- 80/3 70/3
100
50/3-40/3
50/4-40/4
70/3 70/3
60/3
110
30/3
30/4
30/6
60/3
60/3
50/3
120
24/3
24/6
50/3
50/3 40/3
insert a new needle into the opening of the needle clamp and push it up as far as it will
go. Make sure the long groove faces toward you.
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From the library of: Superior Sewing Machine & Supply LLC

Pfaff 3334 Specifications

General

Brand	Pfaff
Model	3334
Category	Sewing Machine
Language	English