Replacing The Bobbin Case And Threading The Thread; Sewing Conditions - Brother BAS-343E Instruction Manual

5. Correct use

5-5. 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.
1. Pull the shuttle race cover q for-
ward and then open the cover.
2. Lift the bobbin case latch and re-
move the bobbin case.

5-6. Sewing conditions

5-6-1. Sewing conditions
The sewing conditions given above may vary depending on the type of material being sewn.
12
CAUTION
3. Insert a new bobbin into the bob-
bin case, and then pass the thread
through the slot w and pull it out
from the thread hold e. Check that
the bobbin turns in the direction of
the arrow when the thread is pulled
at this time.
Specifications
Upper thread
Lower thread
Upper thread tension
Lower thread tension
Thread take-up spring height
Thread take-up spring tension
Needle
Normal sewing speed
For thick materials
#20 or equivalent
#20 or equivalent
150 200 g
20 40 g
8 - 10 mm
150 200 g
DP 17 #21
2000 rpm
BAS-343E
30 mm
4. Pass the thread through the lever
thread hole r, and then pull out
approximately 30 mm of thread.