Brother S-7220B Instruction Manual page 52

11. CLEANING
<-403, 405, 433 specifications>
3754M
<To continue sewing without applying grease>
After the grease has been applied, carry out the following procedure to reset the grease consumption amount.
1. Set DIP switch -3 inside the control box to OFF.
(This will cancel the lock so that the functions can be set.)
2. While pressing the end backtack key (4), press the power switch to turn on the power.
3. Press the start backtack key (3) so that "G" is displayed in the top row of the stitch number display.
4. Press the end backtack key (4) to set the value in the bottom row of the stitch number display to "1".
5. Then, press and hold the end backtack key (4) for 5 seconds or more.
(The display will turn off.)
6. After this, "Gr" will flash and the reset operation will be complete.
7. After the reset operation is complete, set DIP switch -3 to ON. (The settings will be locked.)
45
<-433 specifications>
1. Turn the pulley to raise the needle bar to a
position where the slide block guide (1) can be
seen.
2. Apply grease to the slide block guide (1) in the
places shown in the illustration.
1. Turn the power switch to "OFF".
2. Remove the screws.
3. Apply grease to each of the holes until the grease
overflows slightly.
4. The grease will be pushed in when the screws are
tightened.
5. Turn the machine pulley by hand to move the needle bar
up and down several times in order to disperse the
grease.
6. Use a cloth to wipe away any excess grease from
around the screws.
3756M
7. Carry out the reset procedure given below.
S-7220B
grease
3755M