Brother International SL-1110 Instruction Manual - English - Page 26

10. STANDARD ADJUSTMENTS 10-6. Adjusting the needle bar height 2286M Reference line (a), which is the second line from the bottom of the needle bar (1)(fourth line from the bottom when using a DA x 1 needle) should be aligned with the lower edge of the needle bar bush D (2) as shown in the illustration when the needle bar (1) is at its lowest position. 1. Turn the machine pulley to set the needle bar (1) to its lowest position. 2. Remove the oil cap (3). 3. Loosen the screw (4) and then move the needle bar (1) up or down to adjust its position. 4. Securely tighten the screw (4). 5. Replace the oil cap (3). 3866M 10-7. Adjusting the needle and feed mechanism timing 2288M The illustration at left shows the standard position for the needle tip when the feed dog (1) is lowered from its highest position until it is flush with the top of the needle plate (2). Approx. 1 mm Approx. 3 mm Needle timing is advanced （Standard） 19 3867M 1. Remove the rear cover. 2. Loosen the two set screws (4) of the vertical cam (3) and the two set screws (6) of the horizontal cam (5), and then turn the vertical cam (3) and the horizontal cam (5) slightly to adjust the timing. (The vertical cam (3) and horizontal cam (5) are linked by a pin, so that if either one is turned the other will turn with it.) ・ To advance the needle timing, turn in the direction of . To retard the needle timing, turn in the direction of . ・ To prevent material slippage from occurring, retard the needle timing. (Fig. [B]) ・ To improve thread tightening, advance the needle timing. (Fig. [A]) Note: If the vertical cam (3) and horizontal cam (5) are turned too far in the direction of , it may cause the needle to break. 3. After adjusting, securely tighten the set screws (4) and (6). Needle timing is retarded 3868M SL-1110