– 5 –
○
Remove setscrew
5
from the thread tension cover.
Remove the thread tension cover.
○
Remove setscrews
6
to
!0
from the spool cover.
○
Pull out the cable of bobbin winder motor from the microcomputer PCB.
Loosen the setscrew of the grounding wire. Remove the grounding wire.
○
Remove the spool cover from the main unit of the machine, paying attention
to the base tension.
○
Remove setscrews
!1
and
!2
from the bottom cover of the free arm.
Remove the bottom cover.
4) Spool cover
5) Bottom cover of the free
arm
!1
!2
6
7
8
9
!0
5
Microcomputer PCB
Setscrew
of the
grounding
wire
Base tension
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