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Caution
Switch off the
machine.
Set sewing head
upright again
using both hands.
Danger of crush-
ing between
sewing head and
table top.
Knee operating stitch width control
(Figure 34)
Bell cranks '2' is fastened to the
underside of the bed, the bell crank
'2' is used for controlling the stitch
width with the knee.
To control the stitch width with the
knee, loosen screw '4' holding the
knee lifter shaft arm '3', and move
the knee lifter shaft arm just under
the bell crank'2' and firmly tighten
screw '4'.
Loosen the lock nut holding screw
'7' and turn screw '7' as required, so
that the bent end '6' of knee lifter
shaft arm '3' will be almost horizon-
tal when knee lifter knee plate '5' is
pushed as far as it will go in the
direction indicated with arrow 'A'.
Then firmly tighten the lock nut.
With knee lifter shaft arm '3' set in
position as described above, loosen
screw '8' and move knee lifter shaft
11
12
arm '3' up or down as required, so
that height '10' from its bent end '6'
to bracket '9' is 67 mm.
Loosen stitch width regulating plate
thumb screws '11' and '12' so that
stitch width regulator '13' can be
moved from zero to maximum
stitch
9mm or 20U-125 / 125C: 12mm).
Loosen the lock nut holding screw
'14'
required, so that knee lifter knee
plate
direction indicated with arrow 'B',
will stop at the maxi-mum stitch
width
regulator
tighten the lock nut.
Stitch
wider when knee lifter knee plate
'5' is pushed in the direction
indicated with
will
knee
13
10
67 mm
Figure 33
Zigzag Sewing Machine
width.
(20U-105
and
turn
screw
'5'
when pushed in the
position
of
stitch width
'13'.
Then
width
will
arrow
become
smaller
plate
is released.
2
1
14
7
8
9
B
|
Instruction Manual and Parts List
/
105C:
'14'
as
firmly
become
'B'
and
when
3
6
4
A
5
24
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