Service Manual
Check:
1.
1.
Remove needle plate.
2. Turn handwheel toward the front of the machine to bring hook point to position (D).
3. Place the rear of the bobbin case against the bobbin case position plate (C).
4. Use a GM8092 feeler gauge to check if clearance between plate (A) and bobbin case
surface is correct. The smaller side of the feeler gauge should freely pass through, but
the other side should not.
5. Using the same feeler gauge, check for correct clearance between the extension of
positon plate (C) and bobbin case upper surface (F). Procede as in the item 4 above.
Turn hand wheel toward the front of the machine to bring the hook point to position (D).
2. By means of a screwdriver adjust clearance between retaining plate (A) and bobbin case,
bending the plate upwards or downwards according to feeler gauge.
3. With the same screwdriver adjust clearance between the extension of position plate
(C) and bobbin case upper surface ("F" area), bending the extension upwards or
downwards according to feeler gauge.
Adjustment:
.
.
Bobbin Case Clearance
85
Rev. n .
o
358487-001 Mar./2005
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