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

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9. STANDARD ADJUSTMENT

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.
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
rotary hook

9-1. Standard thread tension

Use
Upper thread
Lower thread
Upper thread tension (N)
[Tension value]
Lower thread tension (N)
Pre-tension (N)
Needle
*1: This is the tension value when the pretension is 0.05 N.

9-1-1. Upper and lower thread tension

2318B
63
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-430F, BE-438F
Hold the machine head with both hands when tilting
it back or returning it to its original position.
Furthermore, after tilting back the machine head, do
not push the face plate side or the pulley side from
above, as this could cause the machine head to
topple over, which may result in personal injury or
damage to the machine.
If the power switch needs to be left on when carrying
out some adjustment, be extremely careful to
observe all safety precautions.
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.
KE-430F
Foundation
garments (-0F)
#60 or
#30 or equivalent
equivalent
#60 or
#50 or equivalent
equivalent
1
0.2 - 0.3
0.05 - 0.3
DP x 5KN #11
BE-438F
Heavy-weight
materials (-05)
#60 or equivalent
#60 or equivalent
1.2 – 1.8
0.5 - 1.2
1
[70 - 130]*
[50 - 150]*
0.2 - 0.3
0.1 - 0.4
DP x 17NY #19
DP x 17NY #12
1
2319B

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Be-438fKe-430f series

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