6. REPLACING THE FIXED KNIFE AND MOVABLE KNIFE

6. REPLACING THE FIXED KNIFE AND MOVABLE KNIFE

CAUTION

Replacement of parts should only be carried out by a qualified technician.

Turn off the power switch and disconnect the power cord from the wall outlet before replacing any parts, otherwise the machine may operate if the treadle is pressed by mistake, which could result in injury.

When replacing parts and installing optional accessories, be sure to use only genuine Brother parts.

Brother will not be held responsible for any accidents or problems resulting from the use of non-genuine parts.

<Fixed knife>

1. Tilt back the machine head.

2. Remove the screw (1), and then remove the rotary hook stopper (2).

3. Remove the screw (3), and then remove the fixed knife

(4).

NOTE:

Carry out the above steps in reverse to install the fixed knife (4).

0541D

Sharpening the fixed knife

If the cutting performance deteriorates, sharpen the fixed knife (4) on a whetstone (5) as shown in the illustration.

 

 

2310M

 

 

 

 

 

<Movable knife>

 

 

 

 

 

3889M

 

 

 

 

 

1.

Remove the needle.

 

 

 

2.

Lift up the presser foot using the lifting lever.

 

 

 

3.

Remove the two screws (1), and then remove the needle

 

 

 

 

plate (2).

 

 

 

4.

Turn the machine pulley to raise the needle bar to its

 

 

 

 

highest position.

 

 

 

5.

Tilt back the machine head.

 

 

 

6.

Push the thread trimmer connecting rod (3) in the

 

 

 

 

direction of the arrow until the two screws (4) can be

 

 

 

 

seen.

 

 

 

7.

Remove the two screws (4), and then remove the

 

 

 

 

movable knife (5).

 

 

 

 

 

NOTE:

Carry out the above steps in reverse to install the movable knife (5).

0542D

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S-7000DD