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1. NAMES OF MAJOR PARTS ..............
2. SPECIFICATIONS ...............................
2-1. Subclass ............................................................... 3
2-2. Stitch patterns....................................................... 5
2-3. Motor ..................................................................... 6
3. INSTALLATION....................................
3-1. Table processing diagram................................... 9
3-2. Installing the motor pulley.................................... 10
3-3. Installing the bed base......................................... 10
3-4. Installing the machine head................................ 11
3-5. Installing the head rest ........................................ 12
3-6. Installing the tension pulley assembly ............... 13
3-7. Setting the flat belt ............................................... 13
3-8. Installing the cotton stand ................................... 14
3-9. Installing the handle............................................. 15
3-10. Installing the bobbin winder ................................ 15
3-11. Installing the pedal and chain............................. 16
3-12. Installing the eye guard ....................................... 16
3-13. Installing the belt cover........................................ 17
3-14. Clearance of the clutch start lever...................... 17
3-15. Ground Wire Connections .................................. 17
3-16. Installing the rulers (option) ................................ 18
3-17. Installing the tape winder and the tape
guard for –2 and –3 specifications (option) ...... 19
4. LUBRICATION .....................................
4-1. Lubricating the bed base..................................... 22
4-2. Lubricating the arm.............................................. 23
4-3. Oiling ..................................................................... 24
4-4. Adjusting the rotary hook lubrication amount.... 25
5. CORRECT USE ...................................
5-1. Installing the needle............................................. 26
5-2. Threading the upper thread................................ 27
5-3. Winding the lower thread .................................... 28
5-4. Threading the bobbin case ................................. 30
5-5. Thread tension ..................................................... 31
5-5-1. Lower thread tension ................................ 31
5-5-2. Upper thread tension ................................ 32
5-5-3. Thread take-up spring height................... 33
5-5-4. Thread take-up spring tension................. 33
5-5-5. Adjusting arm thread guide ...................... 34
5-6. Changing the number of stitches ....................... 35
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CONTENTS
6. SEWING ................................................
1
3
7. MAINTENANCE ...................................
7
8. STANDARD ADJUSTMENTS ............
21
26
9. TROUBLESHOOTING.........................
HM-8180 (English)
6-1. Sewing .................................................................. 39
6-2. Using the emergency stop lever ........................ 40
6-3. Using the thread breakage detection lever....... 40
6-4. Using the handle.................................................. 41
7-1. Cleaning................................................................ 43
7-2. Changing the lubrication oil ................................ 45
7-3. Lubrication ............................................................ 46
7-4. Checking the needle............................................ 47
8-1. Adjusting the needle bar height.......................... 50
8-2. Adjusting the needle bar lift amount .................. 51
8-3. Adjusting the clearance between needle
and hook point...................................................... 53
8-4. Adjusting the inner rotary hook and
rotary hook holder overlap.................................. 53
8-5. Adjusting the presser spring............................... 54
8-6. Adjusting the tilt of the work clamp .................... 54
8-7. Adjusting the knife installation ............................ 55
8-7-1. Feed adjustment ....................................... 59
8-8. Adjusting the upper thread scissors .................. 60
8-9. Adjusting the cutter locking device..................... 62
8-10. Adjusting the cam brake ..................................... 63
8-11. Adjusting the clutch brake................................... 63
8-11-1. Clutch return spring tension..................... 64
8-11-2. Clearance of the clutch start lever........... 64
8-11-3. Stop spring tension ................................... 64
8-11-4. Adjusting the clutch pawl.......................... 65
8-12. Adjusting the buttonhole stitch width and
reference position ................................................ 67
8-12-1. Buttonhole stitch width.............................. 67
8-12-2. Reference position.................................... 67
8-13. Adjusting the bar tacking width........................... 71
8-14. Adjusting the thread tension............................... 72
8-14-1. Main tension adjustment .......................... 72
8-14-2. Sub-tension adjustment ........................... 73
8-14-3. Upper thread fastening adjustment......... 75
8-15. Upper thread take-up adjustment ...................... 77
37
42
48
79
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