47
ENGLISH
1. When the chain-off thread is not neatly rolled in :
1
Making the state of soft-chains of the chain-off thread
p.41
2
Increasing the pressure of chain-off thread presser spring
p.42
3
Increasing the number of stitches to be sewn with tension released for start
p.19 , 23
4
Decrease the slow-start sewing speed.
p.19 , 21
5
Increasing the number of stitches of the slow start
p.19 , 21
2. When the needle thread tension is released at the start of sewing
1
Decreasing the number of stitches to be sewn with tension released
p.19 , 23
2
Decrease the slow-start sewing speed.
p.19 , 21
3
Increasing the number of stitches of the slow start
p.19 , 21
Other items to be checked :
1
The mode is set to the chain-off rolling-in mode ?
p.19 to 23
2
Slow start is set ?
p.19 to 23
3
Chain-off presser plate is rising ?
p.44
4
Thread tension plate normally works without friction ?
p.26 , 32
5
Material to be sewn is pushed under the upper knife as far as it will go ?
p.35
Items to correspond to the trouble
Ref. page
Chain-off thread can be neatly rolled in the seam at the start of sewing by releasing the
thread tension for one or two stitches.
2. In the case of using the SC-510
