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4.17) Replacement of Movable Knife
To change the movable knife (1), turn the pulley manually to place the needle at the highest point.
Then, remove the needle plate by unfastening the two movable knife fixing screws (2) as seen in Fig.
37. Follow these instructions in reverse order to assemble.
(Fig. 37)
4.18) Replacement of Fixed Blade
A. To change the fixed knife (1), loosen the inner spindle stopper fixing screw (2) as in Fig. 38, remove
the washer (3) and inner spindle stopper (4), then unfasten the fixed knife fixing screw (5). Follow
these instructions in reverse order to assemble.
(Fig. 38) (Fig. 39)
B. If the edge of the fixed blade is worn, make sure to grind the knife edge with an oil grindstone as
shown in Fig. 39.
4.19) Adjustment of Bobbin Catcher
If the trimming was done manually, stop the machine when the edge of the fixed knife meets the
bobbin catcher adjustment baseline that is marked on the top. Loosen the bobbin catcher fixing screw
(5) and adjust the bobbin catcher so that the contact surface of the bobbin catcher (4) lightly touches
the center of the protruding part of the bobbin (1). Once the operation is completed, check to see
whether the bobbin catcher springs back lightly.(See Fig.40)
(Fig. 40)
Summary of Contents for GF-1116 Series
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