Brother International SL-1110 Instruction Manual - English - Page 27

10. STANDARD ADJUSTMENTS 10-8. Adjusting the needle and rotary hook timing 2290M 0.5 - 0.7mm 2291M The tip of the rotary hook (3) should be aligned with the center of the needle (4) when the needle bar (1) moves up from its lowest position to the position where reference line (b), which is the line at the bottom of the needle bar (1)(third line from the bottom when using a DA x 1 needle), is aligned with the lower edge of the needle bar bush D (2) as shown in the illustration. 1.8mm 2.2mm 1. Turn the machine pulley to raise the needle bar (1) from its lowest position until reference line (b) is aligned with the lower edge of the needle bar bush D (2) as shown in the illustration. (The needle should rise by 1.8 mm [2.2 mm for -5 specifications] and the distance from the needle hole to the tip of the rotary hook should be 0.5 - 0.7 mm.) 2. Loosen the set screws (5), and then align the tip of the rotary hook (3) with the center of the needle (4). The distance between the tip of the rotary hook (3) and the needle (4) should be approximately 0 - 0.05 mm. 3. Securely tighten the set screws (5). 3869M SL-1110 20