9. ADJUSTMENTS
9-6. Feed dog angle
Standard
(Front)
Lowers the front
Raises the front
3517M
3518M
The standard angle for the feed dog (1) is for the top of the needle plate to be parallel with the top of the feed dog (1) (for the 8550A) or raised slightly at the side closest to the operator (for the 8560A) when the feed dog (1) is raised to its highest position above the needle plate. (With the 
mark on the feed bracket shaft (2) aligned with the mark on the feed rocker bracket arm (3)).
1.Turn the machine pulley to move the feed dog (1) to its highest position above the needle plate.
2.Tilt back the machine head.
3.Loosen the set screw (4).
4.Turn the feed bracket shaft (2) in the direction of the arrow within a range of 90º with respect to the standard position.
•In order to prevent puckering, lower the front of the feed dog (1). (Fig. A)
•In order to prevent the material from slipping, raise the front of the feed dog (1). (Fig. B)
5.Securely tighten the set screw (4).
*When the angle of the feed dog (1) is adjusted, the height and forward/back position of the feed dog (1) will also change and will need to be readjusted.
9-7. Feed dog forward/back and sideways position
0140B | Adjust the sideways clearances X between the feed dog (1) |
| and the needle plate so that that are approximately equal. |
| Adjust so that the clearances Y between the front and back |
| of the feed dog (1) and the needle plate are approximately |
| equal when the machine pulley is turned until the feed plate |
| (2) is moved to its furthest forward position and also when it |
| is moved to its furthest back position. |
<Sideways clearance X adjustment>
Loosen the two screws (3) of the fed dog (1), and adjust the position of the feed dog (1).
If adjustment is not possible using this method, adjust using the following method.
<Forward/back clearance Y and sideways clearance X adjustment>
Loosen the two screws (5) of the feed rocker bracket arm (4) and adjust the position of the feed dog.
0141B
71 |