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[Method of replacement]
1. Let the sewing machine fall down and remove the hinge screw A
of the moving knife link.
2. Return the sewing machine to its original position and remove gauges
of the needle, throat plate, feed dog, etc.
3. Remove the moving knife hinge screw using a 3mm hexagonal
wrench.
4. Remove the knife yoke hinge screw and lift the knife yoke .
Then, remove the moving knife pin from the yoke groove of the
knife yoke .
5. When the moving knife pin has been removed, slide the moving
knife to the left and take it out from the lower side of the knife yoke
.
6. Mounting steps follow the reverse order as above.
When the moving knife hinge screw is loosened, try to move the
moving knife by hand to see whether it moves smoothly without
rattling.
7. Correctly set the yoke groove of the knife yoke in the moving
knife pin and tighten the knife yoke hinge screw .
8. Mount the moving knife link stepped screw A .
9. Lastly, move the moving knife link to the right and left, and confirm
that the moving knife moves assuredly.
o In the case of reassembly, apply
appropriate grease to the moving
knife link stepped screw A .
Appropriate grease part No.:
40006323
Adjustment Procedure Results of Improper Adjustment
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