24
(13) Lateral adjustment of the thread trimming cam
• Slightly loosen nut
1
.
• Turn
3
and adjust so that the clearance provided
between the moving knife base and the looper is 0.3 to
1 mm when the moving knife travels to the rightmost
end. After the adjustment, tighten nut
1
.
• Keep pressing
2
with your
finger, turn the sewing
machine by hand.
How to adjust
Adjustment drawing
0˚
0.5 to 1 mm
(Required value is 0.5)
1. Adjust so that the root of the blade section of the guide plate in terms of the root of the blade section of the moving knife enters to the rear by 0.5 mm when
the moving knife starts and travels backward from the rightmost end as shown in the figure.
2. Loosen screw
1
and adjust the longitudinal position so as to align the front end of the square hole in the moving knife guide plate (upper)
with the blade point of the moving knife.
3. Adjust so that the clearance provided between section A of the moving
knife support and the moving knife is 0.02 to 0.07 mm in the state that
the moving knife is fully protruded.
Then tighten screw
1
.
(14) Moving knife guide plate (upper)
How to adjust
Disassembly
Location of components to be adjusted
Adjustment drawing
Throat plate
A
Align
180˚
1
2
3
1
2
3
1
2
3
0.5 mm
1
A
Moving knife support
0.02 to 0.07 mm
0.3 to 1 mm
Position where moving knife
travels to the rightmost end.
Summary of Contents for E9020
Page 1: ...E9020 SERVICE MANUAL...
