Adjustment Of The Lower Shaft Gear And The Shaking Shaft Gear; Adjustment Of The Position Of The Shuttle Upper Spring - SunStar SPS/D-B1201 SERIES User Manual

3) Adjustment of the lower shaft gear and the shaking shaft gear

A. Loosen the screws ①, ② and ③.
B. While rotating the upper shaft, move the shaking shaft gear towards the arrow direction to find a position where the
gear moves smoothly without any load.
[Caution]
The machine may not operate if the shaking shaft gear is not in the right position.
C. Press the oscillator shaft collar (right) to the bed surface
D. With the oscillator shaft collar (right) stuck to the bed surface
direction. Adjust it so that the end point of the shuttle driver rotates smoothly with less than 0.1mm of backlash.
[Caution]
If there is too much backlash, the machine may generate much more noise than usual in operation, and if there is too
little, the machine may not operate at all.
E. Tighten the screws① and ③.

4) Adjustment of the position of the shuttle upper spring

Remove the lower feed plate and the needle plate from the machine and unfasten the screw① of the shuttle upper
spring. Adjust the position of the shuttle upper spring to bring the backside of the needle to the point
the needle center to the middle of the width
[Caution]
The thread may break or thread strands may unravel if there are scratches or the surface is rough around the groove of
the shuttle upper spring. Be sure to check the status of the spring surface before use.
①
32
firmly together and fasten the collar screw②.
③
②
horizontally. Fasten the screws after adjustments.
①
, turn the oscillator shaft collar towards the arrow
Oscillator Shaft Collar (right)
Backlash: 0.1mm or under
①
①
[Figure 62]
vertically, and
[Figure 63]