Brother International BE-1201B-AC Instruction Manual - English - Page 224
Adjustment of Timing Between Needle and Rotary Hook
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Chapter 10 Adjustment 2. Adjustment of Timing Between Needle and Rotary Hook 2mm [4] 0.2~0.4mm [6] [1] 2mm [2] [3] [5] W1626 1. Select needle bar No. 1. The above figure shows model BE-0901E-AC-PC. For model BE-1201B-AC-PC, needle bar No. 12 corresponds to y. 2. Remove two flat countersunk head screws [2], and remove needle plate [3]. 3. Make an adjustment so that the needle is brought to rotary hook [4] when it rises 2 mm from the needle bar bottom point (180°) (in the position where the mark " " of the pulley is aligned with the stop mark " "). 4. Loosen screws [5] of the rotary hook. Adjust the clearance between the needle and the rotary hook to 0.2 to 0.4 mm. Tighten the two screws temporarily. The needle bar height will be about 2 mm (Figure A). 5. Select the second needle bar (bar No. 12 for BE-1201B-AC-PC) [6]. Check that a clearance of 0.2 to 0.4 mm is left between the needle and the rotary hook. Tighten the three screws of the rotary hook. Note) If the clearance between the needle and the rotary hook is not within 0.2 to 0.4 mm, repeat step 3 and adjust both clearances at needle bar No. 1 and No. 9 (No. 12 for BE-1201B-AC-PC) to the range of 0.2 to 0.4 mm respectively. 9. 10-6 BE-0901E-AC-PC• BE-1201B-AC-PC