(20) Adjusting the throat plate support............................................................................. 34
(21) Adjusting the feed mechanism cover presser .......................................................... 34
(22) Adjusting the looper cover ......................................................................................... 36
(23) Adjusting the cloth chip cover ................................................................................... 36
(24) Adjusting the needle mechanism............................................................................... 38
(25) Position of the upper looper lubrication pin ............................................................. 40
1) Orientation of the lubricating pin ............................................................................................................. 40
2) Setting the lubricating pin ....................................................................................................................... 40
(26) Longitudinal momentum of the top feed dog (Top feed amount) ........................... 42
(27) Vertical momentum of the top feed dog .................................................................... 44
(28) Adjusting the height of the top feed dog................................................................... 46
(29) Locus cut of the top feed dog .................................................................................... 48
(30) Adjusting the longitudinal position of the top feed dog .......................................... 48
(31) Adjusting the lateral position of the top feed dog.................................................... 50
(32) Position of the motion of the top feed dog ............................................................... 52
(33) Adjusting the feed bar guides A and B...................................................................... 54
(34) Adjusting the top feed dog pressure ......................................................................... 56
(35) Lifting amount of the top feed dog (when operating the pedal).............................. 56
(36) Height of the presser (pedal operation)..................................................................... 58
(37) Lifting amount of the top feed dog (when the presser lifting lever is operated) ... 60
(38) Position of the thread guides and the looper thread take-ups................................ 62
(39) Adjusting soft chain making mechanism.................................................................. 64
1) Replacing the parts with those exclusively designed for making soft chains ......................................... 64
2) Adjustment value .................................................................................................................................... 64
3) Important points in adjustment ............................................................................................................... 65
(40) Position of the thread guides and the looper thread take-ups of MO-6900G (J) ... 66
4. ADDITIONAL INFORMATION AND PRECAUTIONS..................................... 68
(1) Thread tension............................................................................................................... 68
1) Strength of tension spring....................................................................................................................... 68
2) Springs used for each model. ................................................................................................................. 68
(2) Upper looper .................................................................................................................. 69
(3) Center-to-center distance of the upper looper holder ............................................... 69
(4) Caution in assembly...................................................................................................... 69
1) Application of sealant ............................................................................................................................. 69
2) Precautions to be taken with respect to the lubricating components ...................................................... 71
(5) Kinds of motor pulleys, belts and frame support plate bolts.................................... 72
1) Motor pulleys and belts........................................................................................................................... 72
2) Pat No. of frame support plate bolt ......................................................................................................... 73
(6) Inspection and replacement of the cartridge filter ..................................................... 73
5. ADJUSTMENT OF THE NEEDLE HEIGHT AND LOOPER TIMMING........... 74
(1) MO-6000 SERIES ........................................................................................................ 74
6. TROUBLES AND CORRECTIVE MEASURES............................................... 75
7. DIMENSIONS OF TABLE ............................................................................... 87
(1) Semi-sunken type .......................................................................................................... 87
(2) Fully-suken type ............................................................................................................88
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