Table Of Contents - JUKI HZL-G Series Service Manual

[ 1] Specifications of HZL-G Series ............................................................ 1
[ 2] Search by trouble (related to mechanical components) ..................... 3
[ 3] Principal parts ........................................................................................ 4
[ 4] Disassembling the machine covers ..................................................... 5
[ 5] PCB connection diagram ...................................................................... 9
[ 6] Adjustment ........................................................................................... 13
6-1 Adjusting the needle bar height ...................................................................... 13
6-2 Adjusting the needle entry point ..................................................................... 14
6-3 Feed dog height ............................................................................................... 14
6-4 Timing belt ........................................................................................................ 15
6-5 Feed timing ....................................................................................................... 15
6-6 Timing between the needle and the hook ....................................................... 16
6-7 Clearance between the needle and the blade point of hook ......................... 17
6-8 Position of the hook rotation stopper plate .................................................... 18
6-9 Adjusting the bobbin thread tension .............................................................. 18
6-10 Adjusting the disk opening amount .............................................................. 19
6-10-1 Adjusting the tension release adjusting plate ................................... 19
6-10-2 Tension disk opening amount ............................................................ 19
6-10-3 Base tension opening amount ............................................................ 20
6-10-4 Adjusting the disk opening amount at the time of thread trimming
(HZL-G210) ............................................................................................... 21
6-11 Adjusting the needle thread tension ............................................................. 21
6-12 Vertical position of the needle threading hook ............................................ 22
6-13 Adjusting the presser foot lifting switch ...................................................... 23
6-14 Adjusting the presser bar height .................................................................. 23
6-15 Motor belt ........................................................................................................ 24
6-16 Automatic thread trimming (HZL-G210) ....................................................... 25
6-16-1 Lateral position of the thread trimming mechanism base .......................... 25
6-16-2 Phase of the catching unit driving cam ....................................................... 26
6-16-3 Replacing the thread trimming blade .......................................................... 27
6-17 Longitudinal feed ........................................................................................... 28
6-18 Buttonhole ...................................................................................................... 29
6-19 Service mode ................................................................................................. 30
6-20-1 Service mode screen ................................................................................... 30
5-20-2 Service-mode items and descriptions ......................................................... 30
CauTIOn:
Be sure to observe the following to protect against a fire, electrical shock, injury or damaged
components.
* Be sure to unplug the machine before disassembly, assembly or adjustment of the machine.
* Be sure to carefully prevent electric cords from being caught, coated surfaces from being
damaged as well as wrong wiring during assembly.
* Be sure to use the proper genuine parts when changing any of the machine parts.
COnTEnTS