Singer 1 One Instruction Manual 40 - Page 20

(6) Correct thread tensions for 3-thread wrapped edge overlock. Needle thread Right looper thread Topside /, Left looper thread Needle thread Underside Be sure the threads are correctly threaded otherwise proper tension cannot be obtained. Set each tension dial to settings shown below and test sew on a sample of your fabric. • When using right needle for sewing normal width overedge seams, be sure to remove left needle. Fabric Light weight Medium weight Heavy weight Blue Tension Dial Green Orange Yellow 2.0 0.5 7.5 3.0 0.5 7.5 3.0 0.5 7.5 • When using left needle for sewing wide overedge seams, be sure to remove right needle. Fabric Light weight Medium weight Heavy weight Blue 2.0 2.5 3.0 Tension Dial Green Orange Yellow 0 7.5 0.5 8.5 0.5 8.5 Right needle thread tension Left needle dial (green) thread tension dial (blue) Right looper Left looper thread tension thread tension dial (orange) dial (yellow) 5' 47 f 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 is too loose. When left looper thread is too loose. When needle thread is too loose Needle thread Right looper thread Left looper thread Topside Underside Turn right looper thread tension dial (orange) toward the (+) mark. Needle thread Right looper -, thread i Left looper thread Topside Underside Turn left looper thread tension dial (yellow) toward the (+) mark. Or, turn right looper thread tension dial (orange) toward the (-) mark. Right looper thread • Left looper thread ▪ Topside Needle thread Underside Turn needle thread tension dial (blue or green) toward the (+) mark. Or, turn right looper thread tension dial (orange) toward the (-) mark. .} 18