The needles have different sizes and named as :
Hook N° 1 : Part n° : C.0253SC070
Hook N° 2 : Part n° : C.0253SC080
Etc. C.0253SC090
C.0253SC100
C.0253SC110
C.0253SC120
The lower side of this hook is guide into C.00601. You have to adjust the lower
guide so that the material can slide under needle without touching it.
You have different kind of guides according to the thickness of the hooks.
Guide Part n° : C.00601C01 for hook : C.0253SC070
C.00601C02 for hook : C.0253SC080
C.00601C03 for hook : C.0253SC090
C.00601C04 for hook : C.0253SC100
C.00601C05 for hook : C.0253SC110
C.00601C06 for hook : C.0253SC120
2. NEEDLE BAR ORIENTATION
The crank C.00797 and the hook and the cone lever C.10033 must be placed in
the same direction. (Fig. 1A-1B)
This means for the Chain-stitch at 6 o’clock.
C.10033
FIG. 1A
From the Library of Superior Sewing Machine & Supply LLC