Adjusting The Df Detecting Switch; Adjusting The Hook Driving Shaft Support A (Asm.) - ELNA E9020 Service Manual

(27) Adjusting the DF detecting switch

Loosen two screws and determine the position of the DF sensor circuit board (asm.) so that DF (drop feed) switch is turned ON with the DF link
when the DF knob moves to the right [feed dog DOWN].
At this time, tighten the screws after confirming that the clearance of section A is 1 mm.
* DF switch should not be turned ON when the DF knob is on the left (feed dog UP).

(28) Adjusting the hook driving shaft support A (asm.)

[Hook driving shaft support A (asm.)]
Loosen setscrew 1 in the hook driving
shaft support A installing plate from
the bottom surface of the bobbin thread
mechanism base, and make hook driving
shaft support A (asm.) 2 slightly come in
contact with hook driving shaft 3 to fix.
How to adjust
How to adjust
1
2
3
Make 2 slightly come in contact with
hook driving shaft to fix.
[Hook driving shaft support B (asm.)]
Adjust with nut A 4 and nut B 5 so that the
clearance provided between the bottom surface
of the bobbin thread mechanism base and lock
nut A 4 in the hook driving shaft support B
installing plate is 0.05 to 0.1 mm.
After the adjustment, fix two places with the silicon
sealant.
Location of components to be adjusted
Adjustment drawing
A
1 mm
Screw
Hook driving shaft support B (asm.)
4
Silicon sealant
5
37