Pfaff 422

Adjustment
11 - 11
11.04.10 Needle rise, hook-to-needle clearance, needle height (final adjustment) and
needle guard
Requirement
In needle rise position (observe machine model!) and at stitch length setting "3"
1. the hook point must be at
""
""
"needle centre
""
""
" at a clearance of 0.05 to 0.10 mm,
2. the top of the needle eye must be 0.8 mm below the hook point, and
3. needle guard 9 must touch the needle just slightly.
Models A and B .................................. needle rise position: 1.8 past b.d.c. of needle bar
Model C .......................................needle rise position: 2.0 mm past b.d.c. of needle bar
Fig. 11 - 10
● Set stitch length at "3" and loosen screws 1, 2, 3, 4 and 5.
● Set machine at needle rise position and hook point at
""
""
"needle centre
".".
".".
".
● Set hook clearance according to Requirement 1 and tighten screws 1, 2 and 5.
● Making sure there is only a slight gear play, move fixing collar 6 up and tighten screws 3.
1
3
1
0,8 mm
2
3
3
3
4
4
6
6
0.05 - 0.1 mm
9
7
8
5