Brother DB2-DD7100, Service Manual

Page: 53 / 153

6. ASSEMBLY
SL-710A
46
1. Install the needle (3) to the needle bar with the screw
(4).
2. Tilt back the machine head.
3. Loosen the two set screws (5) [four set screws for the
DD7100].
4. Turn the feed lifting eccentric wheel (6) toward you
so that the feed dog (1) moves down from its highest
position until it is level with the top of the needle plate
(2).
5. With the feed dog (1) secured in place, turn the pulley
toward you to adjust the position of the needle (3) in
accordance with the sub-class when the needle is
moving down from its highest position.
6. Tighten the two set screws (5) [four set screws for the
DD7100].
6-15-3. Installing the movable knife and fixed knife
1. Remove the needle plate and the needle.
2. Install the movable knife (1) to the movable knife
holder (3) with the two pan screws (2).
3. Tilt back the machine head.
4. Install the fixed knife (4) to the bed with the pan screw
(5).
5. Install the lower thread finger (6) to the bed with the
washer (7) and screw (8).
(4)
Timing
pulley D
(3)
(5)
1767M
(6)
(1)
(2)
1766M 1765M
1768M
(3)
(1)
(2)
1769M
(6)
(5)
(4)
(7)
(8)