Brother International T-8752C Instruction Manual - English - Page 82

Feed dog height, STANDARD ADJUSTMENT, If the feed dog is too high

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13. STANDARD ADJUSTMENT 13-10. Feed dog height Turn the machine pulley forward until the feed dog (1) is at its highest position, and then adjust so that the feed dog (1)protrudes 0.9-1.1 mm from the top of the needle plate (2). 3064M 3065M 1. Tilt back the machine head. 2. Loosen the screw (3) just enough so that the feed bar (4) can slide. 3. Turn the height adjustment screw (5) as shown in the illustration to adjust the height of the feed dog (1). 4. Securely tighten the screw (3). 5. Recheck the height of the feed dog (1). NOTE: If the feed dog is too high • The feed dog may touch the needle plate. • The stitch length may become longer than the stitch length dial setting. • Thread tightening may be poor when using thick threads. • It may be difficult to obtain uniform stitch lengths for normal feed and reverse feed. • Lower thread trimming errors may occur (models with thread trimmer). If the feed dog is too low • The stitch length may become shorter than the stitch length dial setting. • It may be difficult to obtain uniform stitch lengths for normal feed and reverse feed. • The feed dog may touch the movable knife (models with thread trimmer). • Large variations in stitch length may occur at slow and fast sewing speeds. Lower Higher 3066M 73 T-8421C, 8422C, 8452C, 8722C, 8752C

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T-8421C, 8422C, 8452C, 8722C, 8752C
13. STANDARD ADJUSTMENT
73
13-10. Feed dog height
Turn the machine pulley forward until the feed dog (1) is at its
highest position, and then adjust so that the feed dog
(1)protrudes 0.9–1.1 mm from the top of the needle plate (2).
1. Tilt back the machine head.
2. Loosen the screw (3) just enough so that the feed bar (4)
can slide.
3. Turn the height adjustment screw (5) as shown in the
illustration to adjust the height of the feed dog (1).
4. Securely tighten the screw (3).
5. Recheck the height of the feed dog (1).
NOTE:
If the feed dog is too high
• The feed dog may touch the needle plate.
• The stitch length may become longer than the stitch
length dial setting.
• Thread tightening may be poor when using thick threads.
• It may be difficult to obtain uniform stitch lengths for
normal feed and reverse feed.
• Lower thread trimming errors may occur (models with
thread trimmer).
If the feed dog is too low
• The stitch length may become shorter than the stitch
length dial setting.
• It may be difficult to obtain uniform stitch lengths for
normal feed and reverse feed.
• The feed dog may touch the movable knife (models with
thread trimmer).
• Large variations in stitch length may occur at slow and
fast sewing speeds.
3064M
3065M
3066M
Lower
Higher