34
[Adjusting the inclination]
Loosen the thread retaining plate A setscrew and adjust so that the
clearance provided between “U” letter section at the top end of thread
retaining plate A and the bobbin thread mechanism base is 7
±
0.2
mm.
(25) - 2 Adjusting the inclination and the longitudinal position of thread retaining plate A
How to adjust
Disassembly
Location of components to be adjusted
[Adjusting the longitudinal position]
Adjust so that the narrowest clearance clearance provided between
the outer hook fixed knife installing base and the top end of thread
retaining plate A is 0.1 to 0.3 mm when making thread retaining plate
A work by hand (rotate Q in the figure).
* Loosen the thread retaining plate setscrew and simultaneously
adjust the inclination and longitudinal position.
Note) After the adjustment, confirm the working of thread
retaining plate A.
Thread retaining
plate A
Thread retaining
plate A setscrew
(2.5 mm)
Bobbin thread mechanism base
7
±
0.2 mm
Thread retaining plate A
0.1 to 0.3 mm
Q
Outer hook fixed knife
installing base
Throat plate
Summary of Contents for E9020
Page 1: ...E9020 SERVICE MANUAL...
