7. Installing the knife. Juki
LBH-1790 Series

7. Installing the knife

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest.

w

When replacing the knife with a new one, perform as follows.

1) Knife q can be easily removed together with the washer when removing knife retaining screw w .

2) Adjust so that the knife, when lowered the knife bar by hand, is spaced 1 to 2 mm away from the top surface of the throat plate as illustrated in the sketch. Then, be sure to place the washer and tighten the knife retaining screw.

1 to 2 mm q

Inch → mm CONVERSION TABLE

Knife size

1/4

3/8

7/16

1/2

9/16

5/8

11/16

3/4

13/16

7/8

1

1 1/8

1 1/4

1 3/8

1 1/2

Indication of mm

6.40

9.50

11.10

12.70

14.30

15.90

17.50

19.10

20.60

22.20

25.40

28.60

31.80

34.90

38.10

When the cloth cutting knife you have is indicated in inch, set the cloth cutting length (knife size) in mm using the inch → mm conversion table. (See P.29.)

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