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5) Adjusting the position of shuttle upper spring
After removing the lower feed plate and the needle plate from the machine, unfasten the screw of the
shuttle upper spring. Then, adjust the shuttle upper spring so that the backside of the needle and comes
to point
in the vertical direction, and the center of the needle will come to the middle of interval
horizontally. After the adjustment is done, tighten the screw back on firmly.
The thread may be disconnected or the thread strand may be unfastened if there are scratches or if
the surface is rough around the Shuttle upper spring. Always check the surface of the spring before
operating the machine.
Caution
①
6) How to adjust the ascending range of button clamp
To adjust the ascending range of button clamp, take out its tension adjusting screw①, loosen the fixed
screw②, adjust the holder bar of button clamp up and down to place it to the suitable position, then
tighten the fixed screw②. And attach the tension adjusting screw① on the original position again.
13mm
※ The maximum rising height of button clamp is 13mm from the presser foot.
(The rising height of button clamp upon delivery is adjusted to 10~11mm.)
22
①
③
②
①
①
[ Fig. 33 ]
[ Fig. 34 ]
[ Fig. 30 ]
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