Clearance Between The Needle And The Blade Point Of Hook - JUKI HZL-F series Service Manual

5-7 Clearance between the needle and the blade point of hook

○ Remove the face cover and the throat plate.
Adjustment procedure
. Loosen screw
0.02 to 0.07 mm by turning adjusting shaft
Adjusting the balance of the clearances at the right and left needle entry points
. Select the zigzag pattern and set the zigzag width to 7 mm. Adjust the balance of the clearances provided
between the needle and the blade point of the hook at the right and left needle entry points.
Left needle position
If the clearance is larger at the right needle
entry point, shift
Adjustment procedure
. Select No. 2: FAGOTT of the service mode.
2. Gradually turn adjusting shaft
tighten screw
1
3. Slightly loosen setscrew
adjuster while carefully listening to the noise produced when the needle deviates at the right and left
4
needle entry points. Then, securely tighten setscrew
4. Additionally turn shaft
5. Lightly tap P section with fingers. If you hear a needle deviation noise at the right and left needle entry
points, the optimum clearance is provided between the needle and the hook.
2
. Adjust the clearance between the needle and the blade point of the hook to
1
0.02 to 0.07 mm
Right needle position
to the right.
4
to find a position where the needle deviates slightly. Now, temporarily
2
.
. Adjust the lateral balance of the needle bar by slightly moving right-left
3
and securely tighten screw
2
1
.
2
Left needle position
If the clearance is larger at the left needle
entry point, shift
.
3
at the position where the needle does not deviate.
1
3
– 4 –
2
1
Right needle position
to the left.
4
P section
4