15
MC350E
Adjusting Tension Release Mechanism
When the presser foot lifter is raised, the tension release mechanism should work correctly.
If not, adjust as follows.
1 Remove the front cover unit. (see page 6)
2 Lower the presser foot lifter, set the thread tension dial
at “9” and loosen the Screw .
3 Adjust the play between the tension release rod (2)
and the Spring holder approximately 0.3 - 0.5
mm and tighten the Screw .
4 Raise the presser foot lifter, turn the thread tension
dial from “9” to “0”, make sure the tension disc
should open 1.0 mm .
5 Reattach the front cover unit.
Screw
Tension release rod (2)
Play (0.3 - 0.5 mm)
Spring holder
Tension disc
Clearance (approximately 1.0 mm)
B
A
C
D
A
B
D
A
E
E
F
A
B
C
B
D
E
F
F
