JUKI lbh-1790 series Engineer's Manual page 101

2) Replacing and assembling procedure of the parts
1. Turn OFF the power switch of the sewing machine.
2. Remove the needle and the cloth cutting knife from the sewing machine.
3. Remove presser roller installing base @0 0 . (Remove setscrews @1 as shown in the figure below.)
4. Remove presser arm @2 . (Setscrew !6 as shown in the figure on the left side)
5. Remove cloth feed plate @3 . (Setscrews !9 as shown in the figure on the left side)
6. Assemble presser arm spacer 2 to presser arm 120 1 with setscrews 3. (Only when using 70 mm
presser)
7. Assemble presser foot 120 (asm.) 4 or presser foot 70 (asm.) 6 to presser foot 120 5, presser 70 7,
urethane prsser 70 8 or flat presser 70 9 with setscrews !0 .
8. Assemble close cam 120 ! 2 and lifting plate 120 ! 3 to presser arm 120 1 with setscrews ! 4 . The thinner
part of lifting plate 120 !3 comes upward.
9. Assemble presser foot 120 (asm.) 4 or presser foot 70 (asm.) 6 to presser arm 120 1 with hinge
screw !1 .
10. Assemble cloth feed plate 120 !8 to feed base (asm.) !5 with setscrews !9 .
11. Assemble presser arm 120 1 to feed base (asm.) !5 with presser arm shaft !7 and setscrew !6 .
12. Assemble presser roller installing base @0 with setscrews @1 .
13. Loosen setscrews !4 and adjust lifting plate 120 !3 so that there is no play in the lateral direction of
presser arm 120 1 when the presser is lifted.
14. Attach the needle and the cloth cutting knife.
3) Setting the memory switch
1. Turn ON the powerswitch.
2. Press M key of the panel to enter level 1 of the memory switch. (State that U** is displayed)
3. Set U14 kind of presser to 5 and set U15, Presser size width to 5 and U16 Presser size length to 70 or
120.
4. Set the knife size to use for U18, Cloth cutting knife size, and make U19, Function of plural motions of
cloth cutting knife effective.
5. Press READY key to determine the contents of the change of memory switch.
6. Set the sewing length, width, etc, press the feed FORWARD/BACKWARD key and check that the needle
hole does not hide under the presser.
7. Perform sewing.
@1
96
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@0
@2
@3