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14. How to remove and attach the chain looper base
＊Attach the chain looper base from the end of the removed procedure (8.→1.).
Note the following points when attach.
1. When attach the looper base part, be careful to the direction
of the chain looper connecting block.
2. Attach the upper 2 screws with longer screws.
3. Attach the chain looper thread take-up roller.
4. Apply grease on the arm tip.
5. Make sure that the tip of the knee lifter arm enters
the presser operation plate.
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