Mitsubishi LS2-190 - Page 23

4-.3.4- Position of movable knife
1) The movable knife should be ijositioned as shown in Fig. 13
at its retired position.
Note that the movable knife engaged too shallowly with the fixed
knife might come into contact with the feed dog when the movable
knife swings fully. Too deeply engaged knives,however, will not
catch the thread. Either way mis-trimming might result.
2) To position the movable knife, loosen the knife driving fork set
screw (3) and move the knife driving fork. (Fig. 14)
1.5-2
tm
Fig. 13
Fig. 14
Adjustment of thread trimmer cam
1) Adjustment in axial direction
i) Lock the bushing and the trimmer cam by the screw (3) and
temporally clamp the bushing by one of the set screws -(g) to
the recess of the hook shaft.
ii) Bring the flat part of the cam gi*oove (left end of groove)
to the roller, slightly move the cam so that the roller can
smoothly enter and go out the cam groove and then tighten the
screw (B) •
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From the library of: Superior Sewing Machine & Supply LLC