Needle and Feed Mechanism Timing

BROTHER SINGLE NEEDLE

Adjusting the needle and feed mechanism timing

The standard position for point of the needle is as described below when the feed dog (1) is lowered from its highest position until it is aligned with the top of the needle plate (2). (At this time, the “ ” mark (4) on the vertical cam (3) should be aligned with the “-“ mark on the lower shaft. Refer to [A] in the illustration.) <-4[]S / -4[]3> The top of the feed dog (1) and the top of the needle plate (2) should be aligned, and the point of the needle should be approximately 1 mm below the needle plate (2). <-4[]5> The top of the feed dog (1) and the top of the needle plate

(2) Should be aligned, and there should be a clearance of approximately 3 mm between the point of the needle and The needle plate (2).

  1. Tilt back the machine head.
  2. Loosen the two set screws (5), and then turn the vertical cam (3) slightly to adjust the timing.

・ If setting the timing to the standard timing, turn the vertical cam (3) until the “” mark (4) is aligned with the “-“ mark on the lower shaft ([A] in the illustration).

・ To prevent material slippage from occurring, retard the needle timing. (Turn the vertical cam (3) in the direction of (B). Refer to [B] in the illustration.)

・ To improve thread tightening, advance the direction of (C). Refer to [C] in the illustration.)

NOTE: Do not turn the vertical cam (3) too far in the direction of (C), otherwise it could cause the needle to break.
  1. After adjustment is completed, securely tighten the two screws (5).

 

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