Singer 522D Instruction Manual And Parts List page 15

3.5
Point '1'
For standard threading, follow the
solid lines of Figure 19.
Machine
For more stretchable thread, follow
Threading
the dashed lines indicated by 'A'.
Point '2'
If the top cover thread is too loose,
thread the guide by referring to line
'B'. If the top cover thread is still
too loose, then thread the guide by
referring to line 'C', according to
Figure 20.
If the top cover thread is too tight,
thread the guide by referring to the
line 'D'.
Point '3'
For more stretchable thread, adjust
as Figure 21 left.
For less stretchable thread, adjust
as Figure 21 right.
Point '4'
For standard threading, follow the
solid line of Figure 22.
For more stretchable thread, follow
the dashed line indicated by 'A'.
Point '5'
For standard threading, follow the
solid line of Figure 23.
For more stretchable thread, follow
the dashed line indicated by 'E'.
High Speed Flat Bed Interlock Sewing Machine
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
| Instruction Manual and Parts List
12