18
Setscrew C
Setscrew B
Setscrew A
Hook base plate
Adjustment 2
1. Remove the bed cover (see page 3).
2. Turn the power switch ON, and select the zigzag stitch
pattern 9.
Adjust the stitch width at its maximum (9.0).
3. Remove the presser foot, needle plate and bobbin
holder.
4. Loosen the setscrews A and B.
Loosen the setscrew C just enough to move the hook
base plate.
5. Turn the handwheel toward you.
Adjust the clearance between the needle and the tip
of the rotary hook by moving the hook base plate up
or down between -0.1and +0.05 mm at the both left
and right needle position.
6. Tighten the setscrews A, B and C.
7. 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 (see page 20).
* Check the hook adjustment and needle bar height
after this adjustment (see page 15 and 16)
