The Needle Bar Height - Pfaff ambition essential 1.0 Service Manual

15. The needle bar height

Check
1. Remove face plate, needle plate and bobbin case.
2. Put in the setting needle (412 35 29 - 03).
3. The needle shall be in its centre position, straight
stitching.
4. Remove the screws of rotary hook plate (a, b) and rotary
hook plate.
5. Remove the bobbin case (c).
6. Bring the needle bar to its lower turning position.
7. The gap between the upper end of the needle and the
surface (B) of the hook ring should be 28.55 (+ 0.2 mm).
The check is executed with needle bar height gauge which is
28.55 mm long.
a
c
1
Adjustment
1. Remove face plate, needle plate and bobbin case.
2. Put in the setting needle (412 35 29 - 03)
3. The needle shall be in its centre position, straight stitching.
4. Remove the screws of rotary hook plate (a, b) and rotary hook plate,
5. Remove the bobbin case (c).
6. Bring the needle bar to its lower turning position.
7. Loosen the screw (f) and move the needle bar (e) until the correct measure is obtained.
8. Tighten the screw (f).
9. Re check the setting.
NOTE! Check by means of a twin needle that the needle bar is not twisted, it may cause jump
stitches when sewing with a twin needle.
b
4
104 73 15-26
Settings
28.55 mm
Order
nr. 412 35 29 - 03
3
e
f
25