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Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
1) Put belt 1 on handwheel 2 of the sewing machine.
2) Turning handwheel 2 of the sewing machine, put one side of
the belt 1 on motor pulley 3.
3) Stretch the belt 1 so that the belt sags 10 to 15 mm when the
center of the belt 1 is applied with a load of approximate 10N
(1.02kgf)
4) When the belt 1 is stretched, securely fix it with lock nut 4.
(Caution) In case the vibration of belt 1 is excessive when
operating the sewing machine, re-adjust the
tension of belt 1.
™ When the belt tension is
excessively high
1. Seizure of main shaft rear
bushing
2. Damage of bearing in the
motor
™ When the belt tension is
excessively low
1. Belt 1 is quickly worn out.
2. Thread trimming is not
completed.
3. Uneven stop position after
thread trimming
1) When removing the oil reservoir
1 Remove hemming binder cylinder cover 1.
2 Remove four setscrews 2 in the oil reservoir on the four
corners and remove oil reservoir 3.
(Caution) When removing setscrews 2 in the oil
reservoir and lifting the machine head, there is a
case where oil reservoir 3 sticks to the machine
bed and is lifted together with the machine head.
So, be careful.
2) When installing the oil reservoir
1 Cleanly wipe off with the waste the oil adhered to the machine
bed and the installing plane of oil reservoir 3 to prevent oil
from leaking.
2 Put O ring 4 into the groove of oil reservoir 3 so that the O
ring does not protrude.
3 Adjust the installing holes and quietly set the machine head
from the upside.
(Caution) When the machine head and oil reservoir 3 are
not fitted, be careful of pinching of O ring 4.
4 Securely tighten four setscrews 2 in the oil reservoir.
5 Attach hemming binder cylinder cover 1.
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