Brother BAS-341E - Replacing the Bobbin Case and Threading the Thread; Sewing Conditions and Thread Tension; Sewing Conditions

5. Correct use
5-5. Replacing the bobbin case and threading the thread
A cAUTION
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.
1. Pull the shuttle race cover 0 for- 3. Insert a new bobbin into the bob- 4. Pass the thread through the lever
ward and then open the cover.
bin case, and then pass the thread thread hole 0, and then pull out
2. Lift the bobbin case latch and re- through the slot 8 and pull it out approximately 30 mm of thread.
move the bobbin case. from the thread hold
8. Check that
the bobbin turns
in the direction of
the arrow when the thread
is pulled
at this time.
5-6. Sewing conditions and thread tension
5-6-1. Sewing conditions
Specifications
For thick materials
For medium-thick materials
Upper thread
#20 or equivalent #50 or equivalent
Lower thread
#20 or equivalent
#60 or equivalent
Upper thread tension
150-200 g 50-100 g
Lower thread tension
20-40 g 20-40 g
Thread take-up spring height
8-10 mm 6-Bmm
Thread take-up spring tension
150-200 g 40-60 g
Needle DP X 17 #21 DP X 5 #16
Normal sewing speed
2000 spm
2000 spm
The sewing conditions given above may vary depending on the type of material being sewn.
BAS-341 E • 342E
12
From the library of: Superior Sewing Machine & Supply LLC