Maintenance; Height Of The Needle Bar; Timing Between The Needle And The Looper - JUKI MEB-3200 Instruction Manual

11. MAINTENANCE

(1) Height of the needle bar

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

(2) Timing between the needle and the looper

DANGER :
Be sure carry out the work while observing the following in order to protect against pinching of
hands, fingers and arms between the sewing machine and the bottom cover, which can result in
serious injury, when you raise the sewing machine from its home position.
• Be sure to lock the hinge stopper to firmly secure the sewing machine in its raised position.
* Read and check how to rise/return the sewing machine described on p.3 to p.5.
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
1)
2)
a
Needle (inside lower dead position)
b
a=b
Needle (outside lower dead position)
Adjust the standard position of the needle bar,
using the timing gauge supplied with the machine,
Needle bar
when the needle bar is brought to the inside lowest
positionfollowing the procedure described below.
Engraved
1) Remove the throat plate. Instead of the throat
marker
To align
2) Place timing gauge
1) Bring the needle bar to its inside lowest position,
Plane
plate, attach timing gauge support base
supplied with the machine on the machine.
supplied with the machine
on timing gauge support base
that the needle bar aligns with the indented part
of the timing gauge when the needle bar is in its
inside lowest position.
There are two kinds of timing gauges
• With engraved marker "32021404" for S/R/J/C types
• Without engraved marker for T type
loosen lower shaft sprocket setscrews
move looper driving cam
looper driving cam faces to the front. Then
temporarily tighten the screws.
The maximum stitch bite width of all types
is 3.2 mm. When the width exceeds 3.2
mm, use the optional looper (left) and
spreader (left).
Perform the work after checking the stitch
bite width and the height of the needle bar.
The stitch bite width of each type at the time
of delivery is as shown in the table below.
SS/RS JS/CS
2.3
, and confirm
.
and
so that the plane of
TS
2.5 2.3
45