Singer Confidence 7463 Service Manual page 29

6. Temporarily tighten one screw which is located for easier access for adjustment.
7. Set machine at test mode 2 [Zero feed] again by turning on power switch.
8. A ctivate the origin point positioning of feed motor by turning hand wheel manually.
9. Adjust by moving the motor gear in either direction with 1.5 mm hex driver running
machine with a little thick paper placed under presser foot.
10. Check zero feed running machine with a little thick paper under presser foot.
11. Tighten two screws securely after adjustment.
12. Re-check and re-adjust feed balance of actual patterns following procedures in later part of this
section.
(B)Stitch length (Full-step version)
*Full-step version of stitch length mechanism
Step motor rotates 7.5 degrees with one pulse as in the half-step version, but ratio of motor
gear vs feed regulator gear is 1 : 5. This amount of rotation makes feed regulator rotate 1.5
degree. This amount of rotation makes stitch length vary by 0.25 mm. 0.25 mm stitch pitch
moves at each of 7.5 degree exciting position, but amount of rotation increases two times in
comparison to the half-step version for maximum stitch length. This is the details of Full-step
version.
Shape of stitch length mechanism is different from the half-step version due to the difference
of ratio of gears. Check which is the machine serviced according to the shape of motor gear.
Feed regulator
Projection (1)
Switch
Motor gear
Projection (1)
Stopper pin
- 29 -