JUKI AMS-210EN Series, Engineer'S Manual

Page: 38 / 249

(18) Adjustment of the moving knife and counter knife position
Counter knife position : The clearance between the counter knife and the needle hole guide is 1.0mm.
Moving knife position : Before thread trimmer operation (standby state), the distance from the throat plate
front end to the tip of the thread cutter lever (small) is 18.5
±
0.5mm.
However, there shall be a proper clearance toward the moving knife tip during needle
thread clamp
and feed forward.
– 31 –
(19) Floating amount of the thread tension disk
When the sewing machine power supply is turned off (AT solenoid is OFF), the gap between AT thread
tension and thread tension disc is 1.6mm for S type and 1.1mm for H type.
Close contact
Standard Adjustment
Standard Adjustment
4 mm or less
A
B
H : 1.1
±
0.1mm
S : 1.6
±
0.1mm
There shall be a
clearance
18.5
±
0.5mm
18.5mm
1.0mm
0.5mm
C
90
°
Hole center of
oblong hole
Plunger shaft center
Plunger shaft center
0.5mm