Position Of The Moving And Counter Knives; Height Of The Moving And Counter Knives; Inclination Of The Blade Point Of The Counter Knife - JUKI LK-1910 Engineer's Manual

6) Position of the moving and counter knives

Position of the counter knife :
Clearance between the counter knife and the needle hole guide is 0.5 mm.
Position of the moving knife :
Distance from the front end of the throat plate to the top end of the thread trimmer lever (small) is 18.5
mm before thread trimming action.
Needle hole guide
7)

Height of the moving and counter knives

Moving knife :
Engagement amount of the needle hole guide with the blade section of the moving knife is 0.15 mm.
Counter knife :
Level difference between the needle hole guide and the blade section of the counter knife is 0.1 mm
to 0.15 mm.
0.1 to 0.15 mm
8)

Inclination of the blade point of the counter knife

In order to cut two threads (needle thread and bobbin thread) in uniformity, the blade face of the
counter knife is slanting by 0.2 mm.
0.5 mm
Standard Adjustment
Counter knife
A
Counter knife
A
Needle hole
guide
Counter knife
23
−
1
18.5 mm
2
Thread trimmer lever (small)
Moving knife link
Moving knife
Moving knife
0.15 mm
Throat plate
C
B
−
0.2 mm