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NA-11UT Series

INSTRUCTION MANUAL

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Summary of Contents for NA-11UT Series

Page 1: ...NA 11UT Series INSTRUCTION MANUAL...

Page 2: ...bobbin thread 6 13 Threading the needle thread 6 14 Adjusting the stitch length 7 15 Sewing and backtacking 7 16 Adjusting the thread tension 8 17 Adjusting the presser foot pressure 8 18 Adjusting t...

Page 3: ...and feed mechanism 12 27 Adjusting the rotary hook lubrication amount 12 28 Adjusting the height of needle bar and the timing with hook 13 29 Adjusting the oil pump 13 30 Adjusting the lifting amount...

Page 4: ...h e a v V wei ht m a t e r i a l s M x sewing s p e e d2 0 0 0s P m M a x s t i t c hl e n a t h 8mm N e e d l eb a r s t r o k e 37mm L i f t i n g a m o u n t o f 3 5 5 S m m p r e s s e r f e e t...

Page 5: ...table and the place the machine head onto the head cushions which are on the top of the oil pan corne s 4 O 4 Tap the rest bar into the table hole O 3 NOTE Tap the rest bar securely into the table ho...

Page 6: ...t h ek n e el i f t e r p l a t e i s f u l l y p e s s e d 8 A f t e r a d j u s t m e n t t i g h t e n t h en u t I 7 5 L u b r i c a t i o n F i g 5 I 1 A B l B l 2 1 8 A l 3 1 C l 2 C 1 0 i la m...

Page 7: ...of the arm and face plate fully lubricate the pa ts showed by the ar ows Install the face plate again lift the presser foot and operate the machine at a lower speed of 1000 1500spm and observe the oi...

Page 8: ...s e o u t o f t h eh o o k 1 1 1 W i n d i n g t h e b o b b i n t h r e a d F i g 9 I 1 2 3 4 0o 5 6 7 80 1 T u r n t h e p o w e r o n 2 P l a c e t h e b o b b i n o n t o t h e b o b b i n w i n d...

Page 9: ...pring plate and finally pull it out of the notch 4 Check that the bobbin should turn clockwise if the thread is pulled I I 5 Hold the latch and place the bobbin case in 13 11 Threading the needle thre...

Page 10: ...e longer the stitch length will be When turn the dial from a larger setting to a smalle setting it will be easy to turn ifthe reverse lever is pressed down 2 1 0 13 15 13 Sewing and backtacking Fig 13...

Page 11: ...fter adjust the bobbin th ead tension adjust the needle thread tension so that a good even stitch seam is obtained 1 Lower the presser foot 2 Adjust by turning the thread tension nut 17 15 Adjustingth...

Page 12: ...n s p r i n g i s5 Bmmabovetheuppers u r f a c eof thet h r e a dguide whenthep r e s s e rf o o t i s l o w e r e d 1 Lowert h ep r e s s e rf o o t 2 Loosenthescrew 3 T u r nthet h r e a dt e n s i...

Page 13: ...To decrease the thread take up tension 21 19 2i Adjusting the pres er foot hei9ht Fig 19 O 8mm 1 O 2 8mm 3 0 4 o The standard height of presser foot is 8mm when it is lifted by hand 1 Loosen the scre...

Page 14: ...a gain after this adjustment 9 m Lowe the front A Fig A St ard k B Fig B Raise the front 24 22 24 Adjusting the difference of stitch length between the forward and backtacking Fig 22 1 2 0 0 3 0 1 Re...

Page 15: ...ence mark make the third screw of eccentric wheel UD slightly lower than the reference mark screw 3 Continue to turn the machine pulley set the second screw of eccentric wheel UD as reference mark mak...

Page 16: ...needle bar is aligned with the bottom edge of the needle bar bush the tip of the hook should be aimed at the center of needle 1 Turn the machine pulley to raise the needle bar CD from its lowest posi...

Page 17: ...ing amount of two feet to match the materials to be sewn Loosen the screw and move the screw upward to increase the lifting amount or move the screw downward to decrease the lifting amount 3 C 3mm O 3...

Page 18: ...e and movable knife Fig 30 1 Theclea ance between fixed knife CD and movable knife should be 0 3mm 2 Adjust the position illustrated by the Fig 35 3 Move the bobbin case opener and adjust the holde of...

Page 19: ...1 mm c When the solenoid is active there should be a 0 5mm clearance between the cam lever L and cam lever R If need to adjust please move the solenoid base shown by the arrow 5 33 1 2 1 3 2 0 5 1 0m...

Page 20: ...nter is 5mm 2 Set th soienoid activo tho mov blo knife G will turn rightward driven by the trimming c m When the movable knife D mov s to jt Jeft furthest position the clearance between two knives CD...

Page 21: ...screw D and einstall the needle plate 6 7 8 0 9 10 11 12 A 6 Turn the machine pulley and lift the needle above the needle plate check if the needle tip is blunt if yes change a new one 7 Tilt back the...

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