Singer 1 One Instruction Manual 34 - Page 22

9. How to sew four-thread ultra-stretch mock safety stitch The 4-thread ultra-stretch is sewn with two needles and two loopers. (1) Thread right looper (orange path) (see page 15) (2) Thread left looper (yellow) (see page 11) (3) Thread right needle (green path) (4) Thread left needle (blue path) • • (see page 12) (5) Correct thread tensions for 4-thread ultra-stretch Right looper thread Be sure the threads are correctly threaded otherwise proper tension cannot be obtained. Right needle thread Left needle thread Left looper thread Topside Underside 1 Set each tension dial to settings shown below and test sew on a sample of your fabric. Right needle Left looper thread tension thread tension dial Left needle thread tension dial (blue) (green) Right looper dial thread tension dial (orange) (yellow) rr 3 2 3 3 4 4 Fabric Light weight Medium weight Heavy weight Blue 4.5 5.0 7.5 Tension Dial Green Orange Yellow 1.0 1.0 1.5 1.5 1.0 2.0 2.5 2.5 3.5 Adjust thread-- tensions to suit your fabric making reference to table below. Make adjustments in increments of no greater than half a number at a time. r - When right looper thread lies on the underside of fabric. Right looper thread When left looper thread appears on the top. Right loOper thread Right needle i Left needle thread Topside \ Left looper thread Underside Turn right looper thread tension dial (orange) toward the (+) mark, Or, turn left looper thread tension dial (yellow) toward the (-) mark. When left needle thread tension is too loose. ' 'illi hr Right needle ja thread Left needle thread Right looper thread Left looper thread Topside f Underside Turn left needle thread tension dial (blue) toward the (+) mark. Right needle thread Left needle thread Left looper thread Topside Underside Trun left looper thread tension dial (yellow) toward the (+) mark. Or, turn right looper thread tension dial (orange) toward the (-) mark. When right needle thread tension is too loose. Right looper thread Right needle thread Left needle thread Left looper thread Topside Underside Turn right needle thread tension dial (green) toward the (+) mark. .-) 20