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4. PREPARATION BEFORE SEWING
30KE-430FX/KE-430FS, BE-438FX
4-5-2. Upper thread tension
Use the digital tension or the tension nut (2) to adjust the
tension as appropriate for the material being sewn. (Refer
to "Setting the tension value".)
Furthermore, turn the tension nut (1) (sub-tension) to adjust
the remaining length of upper thread to 35 - 40 mm, when
the
thread take-up lever is not used.
Setting the tension value <For KE-430FX and BE-438FX>
Press the
key (2) or the key (3) to change the
tension value (4).
* The tension value which has been set will be applied the
next time sewing is carried out.
[Reference thread tension]
Use
KE-430FX･FS
BE-438FX
Medium-weight
materials (-03)
Knitted wea
r
(-0K)
Foundation
garments (-0F)
Heav
y
-weight
materials (-05)
Upper thread #50 or equivalent
#60 or
equivalent
#60 or
equivalent
#30 or equivalent #60 or equivalent
Lower thread #50 or equivalent
#80 or
equivalent
#60 or
equivalent
#50 or equivalent #60 or equivalent
Upper thread tension
(N) [Tension value] *
1
0.8 - 1.2
[80 - 120]*
2
1.2
–
1.8
[70 - 130]*
2
0.5 - 1.2
[50 - 150]*
2
Lower thread tension
(N)
0.2 - 0.3 0.2 - 0.3
Pre-tension (N) 0.05 - 0.3 0.1 - 0.4
Needle DP x 5 #14 DP x 5 #9 DP x 5 KN#11 DP x 17NY #19 DP x 17NY #12
*1: For KE-430FX and BE-438FX.
*2: This is the tension value when the pretension is 0.05 N.
Weaker
Stronger
2382B
2383B
3174B
2345B