4'^5'ym
® ©
Fig.
21
If
the 32 stitch selecting cannot be obtained even, after all above
manipulations,
loosen
the
clamping
screw
rotate the adjusting
screw
(D
toward
the arrow direction and re-tighten the clamp
screw
(3).
19. HEIGHT OF
BUTTON
CLAMP (Fig. 21)
The
standard
distance
between
the
bottom
surface
of
the
button
clamp
foot
(D
and the upper
surface
of the
feed
plate @ at the stop
motion position is 12
m/m
(15/32"). To adjust to this distance, loosen
the set
screw
(g)
of the button clamp lifting rod and
move
it up or
down.
20. ADJUSTING THE BUTTON CLAMP PRESSURE (Fig.
21)
To adjust the button clamp pressure, rotate the button clamp pres
sure adjusting spring
nut
(D
so
that
the clearance between the
bottom
surface of the button clamp pressure adjusting spring
nut
®
and
the
screwed top
part
of the button clamp pressure adjusting screw stud ®
comes
to
about
4~5m/m
(5/32*'-^3/16").
—
17
—
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