JUKI MEB-3200 Instruction Manual page 60

3)
3.3 mm
Front
A
B
Rear
Needle outside
Stitch bite
width : small
46
Needle inside
Engraved
marker
Plane
Direction A :
Timing advances.
Direction B :
Timing retards.
Stitch bite
width : large
2) Loosen looper driving shaft guide setscrew
move up and down looper driving shaft guide
adjust so that the space between the needle and
the left/right loopers becomes the same when the
needle is brought to its outside lowest position or
inside lowest position. Tighten setscrew
3) Place timing gauge
supplied with the machine and adjust using looper
driving cam so that the left looper blade point
aligns with the center of the needle when the needle
bar ascends 3.3 mm from the inside lowest position,
and fix lower shaft sprocket setscrews
4) Similarly, check the position of the needle and the
looper blade point when the needle bar ascends
3.3 mm from the outside lowest position. The
blade point is positioned approximately in the
range of the left side of the needle. When it is
outside the range, check again steps 2) and 3).
1. After performing the looper timing
a d j u s t m e n t , w h e n t h e s t i t c h b i t e
width is changed in case of
described below, perform steps 1) to 4)
whenever the case occurs.
When the stitch bite width in terms
of that at the time of looper timing
adjustment is changed more than ±
0.3 mm.
Even when the change of the stitch
bite width is within ±0.3 mm :
When the stitch bite width is more
than 3.4 mm.
W h e n s e w i n g h e a v y - w e i g h t
materials or overlapped section
where needle is apt to be bent.
2. There are two kinds of timing gauges
• With engraved marker "32021404" for
S/R/J/C types
• Without engraved marker for T type
.
on timing gauge support base
.
to
and
to
.