12
4) Adjustment of belt tension
After installing the motor, unfasten the fixing nuts ①, ②
and tension will be created to the belt ④ due to motor ③
falling by gravity. Fasten the fixing nut ① first now and
then fasten the fixing nut ② tightly. (See Figure 6.)
5) Installation of the program unit
(Servo motor)
(1) Fix the bracket ② onto the program unit ①, using 4
fixing nuts ③.
(2) Then, use 3 fixing bolts ④ to tightly fix the bracket ②,
where the program unit ① has been attached, along with
the back cover. (See Figure 7.)
6) Installation of the belt cover
(1) Before attaching the belt cover “A”to the machine body,
assemble in advance the rubber collar ① and washer ②
and fixing nail ③ on the to-be-attached side of the cover
as can be seen in picture “K”of Figure 8.
(2) Attach belt cover “A”onto the machine body as can be
seen on Figure 8. Now, if a bobbin winder is attached on
the table, lay down the machine body on its back and
attach the belt cover “A”.
[Figure 6]
[Figure 7]
[Figure 8]
④
(4) For trial runs, operate the machine at 1,500 spm for
about 10 minutes at a time. Be sure to check whether the
oil window is being lubricated. (See Figure 5.)
(5) Operate the machine at below 2,400 spm for the first 4-5
days and run the machine at normal speed thereafter to
maintain the sewing machine in optimal condition.
[Figure 5]
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