SunStar Fortuna 5 Series User's Manual Parts Book

3) Start and End Backtack Stitch Correction Method
^ Since backtack stitches may vaiy according to the type of sewing machine, use the following stitch correction method.
^ To adjust the stitch fast and clean, users should check die stitch condition before commencing the correction.
0 Classification according to backtack sewing condition
^ The backtack sewing condition can be classified as follows (When A: 3 stitches, B: 3 stitches, C: 3 stitches, D: 3 stitches)
A When one more or less stitch than the set stitch number is sewn
Classification
Sewing condition where few backtack
stitches are sewn
Correct backtack sewing condition
1
Ag
OC
f
Sewing condition where more
backtack stitches are sewn
Start backtack
Sewing condition
2| bA
When sides A and B each have
one less stitch sewn
When sides A and B each have 3
stitches correctly sewn
When sides A and B each have
one more stitch sewn
End backtack
Sewing condition
When sides C and D each have
one less stitch sewn
When sides C and D each have 3
stitches conectly sewn
When sides C and D each have
one more stitch sewn
B. When one more or one less stitch is sewn than the programmed stitch number
Classification
B/T condition where the stitch length
comes out shorter
Correct B/T sewing condition
Start backtack
Sewing condition
1
{an}
r
When the length of the last three stitches
in sides A and B have tieen sewn short
When sides A and 8 have 3
stitches correctly sewn.
When sides A and 8 each have 3 stitches
and a half stitch (or less than one stitch) sewn
End backtack
Sewing condition
When the length of the first stitch in
C and D have been sewn short
When the sides of C and D have 3 stitches
correctly sewn
V\^ the sides of C and D each have 3 stitches
and a half stitch (or less than one stitch) sewn.
A
The figures above show each representative sewing condition. And there may be some differences according to the
conditions of the sewing machine and it is normal that two ty pes of conditions occur at the same ti me.
35
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SunStar Fortuna 5 Series Specifications

General

Brand	SunStar
Model	Fortuna 5 Series
Category	Engine
Language	English