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7-3 Adjustment of the hook positioner’s position
1) Remove the sliding plate.
2) Loosen the hook positioner set screw (No.2) and adjust the hook positioner (No.1) position to align
the right side of the projection (No.3) with the right side of the needle (No.4) as shown on the figure.
3) After the adjustment, securely tighten the hook positioner set screw (No.2) and put the sliding plate
back on the sewing machine.
3)
4) 1)
2)
0.5 to 0.8mm
7-4 Adjustment of the lubrication for the rotating hook
1) Tilt the sewing machine head (No.1) to the left so that the bottom components can be seen.
CAUTION
★Please make sure to remove the small belt cover from the table top before tilting sewing machine
head.
2) Loosen the set screws (No.2) and remove the cover (No.3).
3) Tighten the oil flow adjusting screw (No.4) lightly by fingers or a screw driver until it is stopped the
turn.
NOTE
Do not tight the oil flow adjusting screw (No.4) too much.
4) Adjust the oil flow in the range of one reverse turn from the deadlock position of the oil flow adjusting
screw (No.4). The oil flow is decreased if loose the oil flow adjusting screw (No.4).
5) It can be checked the oil flow with the situation that the oil splashes on the paper covered over the
running rotating hook.
For this checking, set the sewing machine ready to operate and remove the sliding plate so that the
rotating hook is exposed, then cover the rotating hook with a paper and run the sewing machine.
6) After the adjustment, put the sliding plate, the cover (No.3) and the cylinder cover back to the original
location.
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