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10-6 BE-1204B-BC • BE-1206B-BC
Chapter 10 Adjustment
2. Attachment and Adjustment of Rotary Hook
W1309Q W1310Q
W1311Q W1314Q
W1312Q W1313Q
1. Turn the power switch off.
2. Select the needle bar No. 1 [1].
3. Remove two flat screws [2] and dismount the needle plate [3].
4. Adjust so that the needle [4] and the point of rotary hook [5] should meet at the position (where the
arrow plate aligns with N.H mark (200 û)) higher by 1.7 mm than the needle bar lowest point (180 û ).
Perform this after the height adjustment of the needle bar.
5. Turn the rotary hook manually until the point of rotary hook [5] turns up.
6. Loosen the screw [6] of the rotary hook cutting section and adjust the clearance between the
needle and the rotary hook to be within 0.1 to 0.3 mm.
Confirm that the height of the needle bar is 1.8 mm then.
[5]
[6]
[2]
[1]
[4]
[3]
1.8 mm
Lower shaft
[6]
0.1~0.3mm
1.7 mm
Cutting
section