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(43) Adjustment of the shuttle upper spring and lower thread holder position
1. Shuttle upper spring : In regard to the right and left positioning, secure coincidence between the center
of the needle and that of the groove width C. For the front-rear positioning,
join the needle rear end and the corner
A
block.
2. Lower thread holder : The amount of overlapping with the shuttle upper spring should be adjusted
so that the thread of Vinylon #8 can pass smoothly when it is pulled in the
direction of the arrow E. After the best positioning has been secured, fasten the
2 setscrews .
(Caution) If Part
BB
BB
B
and
FF
FF
F
is damaged, this is the cause of thread breakage, hangnail of thread, stain
on thread, etc. Therefore, this part should be polished by the use of a buff or the like. In
particular, the rear side should be handled with care.
(44) Shuttle felt
•Two pieces of the shuttle felt are inserted in the holes of the shuttle race . Confirm that the shuttle felts
are not overloaded when the inner hook is set and turned along the shuttle race .
• Shuttle packing has been inserted in the hole of the shuttle race .
Standard Adjustment
Standard Adjustment
A
B
F
E
C
D
Shuttle
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