6. CORRECT USE
31
KE-436C
6-5. Replacing the bobbin case and threading the thread
CAUTION
Turn off the power switch before removing or inserting the bobbin case, otherwise the machine may operate if the
foot switch is depressed by mistake, which could result in injury.
1. Pull the shuttle race cover (1) toward you to open it.
2. Insert a new bobbin into the bobbin case, and then pass the thread through the slot (2) and pull it out from the thread hole
(3). Check that the bobbin turns in the direction of the arrow when the thread is pulled at this time.
3. Pass the thread through the lever thread hole (4), and then pull out approximately 30 mm of thread.
6-6. Thread tension
6-6-1. Sewing conditions and thread tension
Medium materials Heavy materials
Use
Standard hook Large hook Standard hook Large hook
Upper thread
#50 or
equivalent
←
#30 or
equivalent
←
Lower thread
#60 or
equivalent
←
#50 or
equivalent
←
Upper thread tension (N) 0.6 - 0.9 1.0 - 1.3 1.2 - 1.6 1.4 - 1.8
Lower thread tension (N) 0.2 - 0.3 ← 0.2 - 0.3 ←
Thread take-up spring height (mm) 9 - 11 ← 9 - 11 ←
Thread take-up spring tension (N) 0.15 - 0.35 ← 0.4 - 0.6 ←
Pre-tension (N) 0.1 - 0.3 ← 0.3 - 0.5 ←
Needle DP × 5 #14 ← DP × 17NY #19 ←
The sewing conditions given in the above table may need to be changed depending on the article being sewn.
2610Q 2534Q
2535Q
30mm
To Next Page
Loading...
Need help?
General
