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Clearance between point of lowerlooper and upper surface of needle plate should be between 2.0 ~ 2.4 mm
when height of lowerlooper is at its highest position (or when distance between point of lowerlooper and
center of left-hand needle is 12.5 mm).
1. Before adjusting the timing, position the looper correctly.
2. Too much adjustment will cause damage to other parts or cause the needle to skip stitches.
How to use the gauge
1. Temporarily attach the lowerlooper to the lowerlooper lever.
2. Turn the handwheel to position the point of the lowerlooper as far as possible to the left.
3. Remove the presser foot assembly.
4. Position the gauge as shown in the illustration.
5. Turn the handwheel until the point of the lowerlooper contacts the end of the gauge as shown. Remove
the gauge, turn the handwheel to expose the set screw and firmly tighten the screw. Finally, reposition the
gauge and check the final position of the lowerlooper.
6. Adjust the timing of the lowerlooper. (See page 4.)
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