8-4 Timing of the retainer looper to the needle
Remove the upper cover A and gasket B.
Remove the screw C and packing D of the bed.
Loosen the screw F (2 pieces) of the retainer looper
eccentric G. Adjust by turning of the retainer
looper eccentric. It is a standard setting to align
the mark J on the retainer looper eccentric G to the
mark K on the lower shaft H.
When aligning the mark J to the mark L which is a
front of the rotating direction, the moving speed of
the retainer looper and the looper thread take-up
lever E against the needle and the looper should be
faster. When aligning the mark J to the mark K
which is a back of the rotating direction, its moving
speed should be slower.
■
After adjusting, fasten the screw F of the retainer
looper eccentric G. At the same time, confirm the
clearance of approx. 2.5mm between lower shaft
bush P and the end plate N of the retainer looper
eccentric rod M.
＊
After this adjusting, confirm to the position of
front/back, the position of left/right and the height of
the retainer looper. (Refer to the previous page)
< Note>
Before adjusting machine, be sure to turn off the motor.
14
F
F
B
B
X
X
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