Pfaff 4874 - Clearance of Needle Guards

CLEARANCE OF NEEDLE GUARDS 8
4 mm
2 mm
a
c
0~0.05mm
1. Remove: Mains lead - Needle plate.
2. Insert 2 new needles (Nm 90) in "R1" and "R2" positions.
3. Check height - clearance - angular position of lower looper.
4. Turn the handwheel and bring needle bar in its lowest position.
5. Loosen screws "a".
6. Shift needle guard "c" back and forth to obtain a clearance of 0.05mm between needle
guard "c" and needles, tighten both screws "a".