CAUTION:
It is advisable, if not necessary, not to remove the vertical shaft
"31". This will enable you to maintain the proper height of the
needle positioning lever during the assembly of the machine.
HOW TO ASSEMBLE THE UPPER GROUP OF THE ZIG-ZAG
MECHANISM (FIG. 46)
On stud " 38 " (wich is permanently fixed in the machine arm
with a retaining ring " 37B ", assemble the parts mentioned below
in the following order:
Place the two lever assemblies " 20 " and " 17 " upon each other,
as shown in Fig. 48, and close this assembly with a retaining ring
" 37A " on top of this stud, shift the eccentric No. 20026 towards
the right until it comes in contact with the upper shaft.
Insert the roller " 16 " on the lower portion of the stud in the link
" 35 " of the vertical shaft, as indicated in Fig. 49.
Fig. 49
HECCML
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