Clearance Of Needle Guards - Pfaff 4874 Service Manual

CLEARANCE OF NEEDLE GUARDS

8
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".
4 mm
0~0.05mm
c
a
2 mm