5. MECHANICAL DESCRIPTIONS

<Dial feed mechanism>

1116B

Adjusting the stitch length dial changes the angle of the feed regulator.

(1)Feed regulator

(2)Side connecting rod

(3)Feed driving connecting rod

(4)Feed rocker arm

1.Stitch length dial 5

2.Feed regulator

3.Connecting rod U

4.Feed adjusting lever U

5.Connecting rod D

6.Feed adjusting lever D

7.Feed regulator shaft

8.Feed connecting lever

9.Feed regulator connecting rod

10.Feed regulator lever

11.Feed regulator

12 Feed regulator spring

0084B

Changing the angle of the feed regulator causes the amount of horizontal feed movement to change.

(Continued on next page)

Z-8550A, 8560A

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