Replacing The Felt And The Thread Tension Spring; Adjusting The Fl Oating Amount Of The Tension Disc - JUKI AMS-210EN-7450 Instruction Manual

1-14. Replacing the felt and the thread tension spring

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start or
the sewing machine.
Replace the soiled felt with a new one or change the existing thread tension spring with the optional
thread tension spring (B3129012A00), follow the steps of procedure described below:
A B
A Thread take-up spring
B Felt
C Thread tension T compl.
1-15. Adjusting the fl oating amount of the tension disc
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start or
the sewing machine.
B D E F
C
D Idling prevention spring
E Tension disc holder
F Thread tension spring
1
2
– 20 –
1) Loosen and remove knob 1 .
Then, you can disassemble the
components from B shown in
the fi gure at right.
1
2) Replace two pieces of felt B or
thread tension spring F with a
new one or optional one. Then,
re-place them in the order as
shown in the fi gure.
To adjust fl oating amount of the tension disc,
remove the top cover and crank rod cover,
loosen thread tension controller unit 3 fi xing
screw 1 and move thread tension loosening
unit 2 to the right or left for adjustment.