Standard Adjustment; Standard Thread Tension; Upper And Lower Thread Tension - Brother KE-430HX Instruction Manual

9. STANDARD ADJUSTMENT

Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
Ask your Brother dealer or a qualified electrician to
carry out any maintenance and inspection of the
electrical system.
If any safety devices have been removed, be
absolutely sure to re-install them to their original
positions and check that they operate correctly
before using the machine.
Secure the table so that it will not move when tilting
back the machine head. If the table moves, it may
crush your feet or cause other injuries.

9-1. Standard thread tension

Use
Upper thread
Lower thread
Upper thread tension (N)
1
[Tension value] *
Lower thread tension (N)
Pre-tension (N)
Needle
*1: For KE-430HX and BE-438HX.
*2: This is the tension value when the pretension is 0.05 N.

9-1-1. Upper and lower thread tension

3910B
CAUTION
Medium-weight Knitted wear
materials (-03) (-0K)
#50 or #60 or
equivalent equivalent
#50 or #80 or
equivalent equivalent
0.8 - 1.2
[80 - 120]*
DP x 5 #14 DP x 5 #9
KE-430HX/KE-430HS, BE-438HX/BE-438HS
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
only one hand is used, the weight of the machine
head may cause your hand to slip, and your hand
may get caught.
Turn off the power switch and disconnect the power
cord from the wall outlet at the following times,
otherwise the machine may operate if the foot switch
is depressed by mistake, which could result in injury.
 When carrying out inspection, adjustment and
maintenance
 When replacing consumable parts such as the
hook and knives
If the power switch needs to be left on when carrying
out some adjustment, be extremely careful to
observe all safety precautions.
KE-430HX/HS
Light-weight
materials (-01)
#60 or
equivalent
#60 or
equivalent
2
0.2 - 0.3
0.05 - 0.3
DP x 5 #14
9. STANDARD ADJUSTMENT
BE-438HX/HS
Heavy-weight
materials (-05)
#30 or equivalent #60 or equivalent
#50 or equivalent #60 or equivalent
1.2 – 1.8 0.5 - 1.2
2
[70 - 130]* [50 - 150]*
0.2 - 0.3
0.1 - 0.4
DP x 17NY #19 DP x 17NY #12
2
2319B
81