Clearance Between Needle And Tip Of The Rotary Hook (Method 2) - Horizon Fitness Memory Craft 9480 QC PROFESSIONAL Service Manual And Parts List

Clearance between needle and tip of the rotary hook (method 2)

The clearance between the needle and the point of hook should be -0.10 to +0.05 mm.
Setscrew A
Hook base plate
Mechanical Adjustment
Setscrew C
Setscrew B
19
1. Remove the bed cover (refer to page 3).
2. Loosen the setscrews A, B and C.
Tighten the setscrew C lightly.
3. Turn the handwheel toward you until the tip of the
hook comes behind the test pin.
Adjust the clearance between the needle and the tip
of the rotary hook, by moving the hook base plate up
or down, so the test pin just touch the tip of the hook.
4. Tighten the setscrews A, B and C.
5. Check the backlash between the lower shaft gear
and the hook drive gear.
If the backlash is too great or the engagement of
the gears is too tight, adjust the backlash (refer to
page 22).
* Check the hook adjustment and needle bar height
after this adjustment (refer to pages 20 and 21).