Replacing The Bobbin Case And Threading The Thread; Sewing Conditions And Thread Tension - Brother LK3-B432E MKII Instruction Manual

7. CORRECT USE

7-5. Replacing the bobbin case and threading the thread

Turn off the power switch before removing and replacing the bobbin case, otherwise the machine
may operate if the foot switch is depressed by mistake and serious injury could result.
Pull the shuttle race cover q toward
you to open it.

7-6 . Sewing conditions and thread tension

Use
Upper thread
Lower thread
Upper thread tension
(N)
Lower thread tension
(N)
Thread take-up spring
height (mm)
Thread take-up spring
tension (N)
Pre-tension (N)
Needle
The sewing conditions given in the above table may need to be changed depending on the article being sewn.
25
CAUTION
e
q
Insert a new bobbin into the bobbin
case, and then pass the thread
through the slot w and pull it out
from the thread hole e. Check that
the bobbin turns in the direction of
the arrow when the thread is pulled
at this time.
Ordinary materials
Standard
Large hook
hook
#50 or
equivalent
#60 or
equivalent
0.6 - 0.9 1.0 - 1.3
0.2 - 0.3
6 - 8
0.15 - 0.35
0.1 - 0.3
DP 5 #14
LK3-B430E-, B431E-, B432E-, B433E- Mark II
w
Pass the thread through the lever
thread hole r, and then pull out ap-
proximately 30 mm of thread.
Denim
Standard
Large hook
hook
#30 or
equivalent
#50 or
equivalent
1.2 - 1.6 1.4 - 1.8
0.2 - 0.3
6 - 8
0.4 - 0.6
0.3 - 0.5
DP 17NY #19
r
30mm
Knitted materials
Standard hook
#60 or equivalent
#80 or equivalent
0.8 - 1.2
0.25 - 0.3
8 - 9
0.4 - 0.5
0.1 - 0.3
DP 5#9