Owner's Manual

T-8420B, 8450B, 8720B, 8750B

8. CLEANING

Once the grease has been applied, follow the procedure

below to reset the cumulative time between grease

applications.

1. Press the RESET switch (1) for about 5 seconds until a

short beep (about 0.5 seconds) sounds. (Release the

switch once the buzzer sounds.)

* Use an object with a sharp point to firmly push in the

RESET switch (1) as far as it will go.

2. Press the RESET switch (1) once more for approximately

5 seconds.

A long beep (about 2 seconds) will sound, and the reset

procedure will be carried out.

If only the POWER indicator (2) illuminates when the sewing

machine is next used, the reset procedure has been carried

out successfully.

NOTE:

・ If the reset procedure has not been carried out successfully, repeat steps 1 and 2 above.

・ If the GREASE indicator (3) does not illuminate and the buzzer does not sound when the RESET switch (1) is pressed,

operate the sewing machine for more than 30 seconds, and then carry out the reset procedure again.

・ The RESET switch (1) should never be pressed except when carrying out the reset procedure after grease application.

* Pour oil into the oil cover at the same time. (Refer to p.11.)

2996M

2939M

Turn the machine pulley until the

screw (1) can be seen.

Use the tip of a screwdriver or similar to

apply 5-10 mm beads of grease to the slide

block slider (2).

4 places at top,

bottom, left and right

of the slide block (3)

2997M