Top Cover
Required Tools ...................................................................................................................................... 1
Replacing External Parts
Top cover ............................................................................................................................................... 2
Face plate (1) ......................................................................................................................................... 3
Face plate (2) ........................................................................................................................................ 4
Belt cover .............................................................................................................................................. 5
Base plate ............................................................................................................................................. 6
Looper cover ......................................................................................................................................... 7
Front cover ............................................................................................................................................ 8
Side cover ............................................................................................................................................. 9
Rear cover ........................................................................................................................................... 10
Mechanical Adjustment
To adjust the needle bar height ........................................................................................................... 11
To adjust the presser foot bar height ................................................................................................... 12
To adjust the feed dog height .............................................................................................................. 13
To adjust the differential feed .............................................................................................................. 14
To adjust the stitch length .................................................................................................................... 15
To adjust the timing of the needle and the upper knife ....................................................................... 16
To adjust the positions of the upper knife and the lower knife ............................................................ 17
To replace the lower looper ................................................................................................................. 18
To adjust the position of the lower looper (1) ....................................................................................... 19
To adjust the position of the lower looper (2) ...................................................................................... 20
To adjust the clearance of the needle and lower looper and the clearance of the needle and
needle guard (front) (1) ................................................................................................................... 21
To adjust the clearance of the needle and lower looper and the clearance of the needle and
needle guard (front) (2) .................................................................................................................. 22
To adjust the clearance of the needle and needle guard (rear) .......................................................... 23
To adjust the timing of the needle and the lower looper ...................................................................... 24
To replace the upper looper and to adjust the position of the tip of the upper looper ......................... 25
To adjust the leftmost position of the upper looper ............................................................................. 26
To adjust the timing of the upper looper and the lower looper ............................................................ 27
To adjust the clearance of the upper looper and the lower looper ...................................................... 28
To adjust the clearance between the needle and the upper looper .................................................... 29
To adjust the position of the chaining finger ........................................................................................ 30
To adjust the thread tensions .............................................................................................................. 31
To adjust the pre-tension ..................................................................................................................... 32
To adjust the position the looper thread take-up lever ........................................................................ 33
To adjust the looper threader (air) (1) .................................................................................................. 34
To adjust the looper threader (air) (2) .................................................................................................. 35
To adjust the needle threader .............................................................................................................. 36
To adjust the height of the rubber sole (rear left) ................................................................................ 37
Replacing External Parts
To replace the machine socket ............................................................................................................ 38
To replace the motor (1) ...................................................................................................................... 39
To replace the motor (2) ...................................................................................................................... 40
To replace the LED .............................................................................................................................. 41
To change the micro switch (to detect covers and the looper threader switch lever) ......................... 42
To change the micro switch (to detect the presser foot lifter).............................................................. 43
