Flange Machine
Part Number 6Z8303
Sewing Adjustments
35
Needles
The PFM-4000 Flange Machine typically has two needles, the overedge (right-
hand) needle and the safety stitch (left-hand) needle. Unless otherwise specified
when purchased, the spare parts kit includes a packet of 135 x 7 #24 needles.
Always use quality needles for flanging.
Burr
A rough, metal edge,
usually in the eye of a
needle.
Always verify the condition of the needle. Look at the point of the needle to
determine if the end is sharp or broken. You will not see the exact point on a sharp
needle. If the point appears to shine, the needle is probably blunt or damaged. To
test for burrs within the needle eye:
1
Thread the needle.
2
Slide the thread back and forth along all inside edges of the eye. The thread
should move smoothly.
3
Select another needle if the thread snags or frays.
See
to learn how to properly handle and dispose of needles.
details the specific parts of the needle. Become familiar with these parts.
Always verify the condition of the needle before sewing.
Figure 6.2
Parts of a needle
Loopers and Needle Guards
Timing
A procedure to
ensure synchronization of
moving parts.
The looper’s function is to catch the thread loop created by the needle and to
bring the bottom thread into the thread triangle. The looper and the needle work
together to form the chain stitch. It is very important that the looper and its
related parts are synchronized. These specific timing procedures are discussed in
Butt
Shank
Cone
Front
Reinforced blade
Right
Left
Back
Blade
Scarf
Eye Point
