Chapter 1: Installation and lubrication
1. I
NSTALLATION
................................................................................................................................3
a. Complete machine - with motor and table.................................................................................3
b. Sewing head only .......................................................................................................................5
2. L
UBRICATING THE SEWING HEAD
....................................................................................................5
Chapter 2: Threading
1. T
YPES OF YARNS
.............................................................................................................................7
a. Needle yarn................................................................................................................................7
b. Chain yarn .................................................................................................................................7
2. T
HREADING
....................................................................................................................................7
a. Needle thread.............................................................................................................................7
b. Chain yarn .................................................................................................................................7
Chapter 3: Stitch formation
1. C
HAIN YARN FEED
..........................................................................................................................9
2. Stitch density setting......................................................................................................................11
a. On standard equipment............................................................................................................11
b With the stitch density regulator...............................................................................................11
Chapter 4: Mechanic adjustment of the sewing head
1. T
YPES OF NEEDLES
.......................................................................................................................13
a. How often are the needles to be replaced?..............................................................................13
b. Needle replacement..................................................................................................................13
c Needle height adjustment ..........................................................................................................15
d. Replacing the needle bar and adjusting the needle height ......................................................15
2. U
PPER LOOPER
..............................................................................................................................17
a. Preparatory work.....................................................................................................................17
b. Replacing the upper looper .....................................................................................................17
c.
Upper looper fine adjustment...................................................................................................17
3. T
HE LOWER LOOPER
.....................................................................................................................19
a. Preparatory work.....................................................................................................................19
b. Replacing the lower looper......................................................................................................19
c. Adjusting the upper looper to the lower looper .......................................................................21
d. Adjusting the distance between needle and lower looper ........................................................21
4. T
HE CUTTING MOTION
...................................................................................................................23
a. Renewing the upper knife.........................................................................................................23
b. Renewing the lower knife.........................................................................................................23
c. Knife fine adjustment ...............................................................................................................23
d. Aligning the lower blade with the needle plate........................................................................23
5. T
HE PRESSER FOOT
................................................................................................................. 23-25
6. F
EED
-
DOG
.....................................................................................................................................26
7. C
HAIN GUIDE
................................................................................................................................27
8. S
TITCH PLATE FINGER
...................................................................................................................27
Chapter 5: Maintenance schedule
Maintenance schedule........................................................................................................28
From the Library of Superior Sewing Machine & Supply LLC