11 - 12
Adjustment
11.04.10 Needle rise, hook clearance, needle height (final adjustm.) and needle guard
(On the PFAFF 1426 carry out this adjustment on both hooks)
Requirement
At stitch-length setting "4" and needle bar at 2 mm b.d.c.:
1. the hook point must be at "needle centre" with a hook-to-needle clearance of
0.05 to 0.1 mm;
2. the top of the needle eye must be 0.8 mm below the hook point;
3. and needle guard 9 must touch the needle just lightly.
● Set stitch length "4" and loosen screws 1, 2, 3 and 4.
● Set needle bar at 2 mm past b.d.c. and set hook point at "needle centre."
● Set hook clearance according to Requirement 1 and tighten screws 1.
● Loosen screws 5 and turn shaft 6
so that the shafts in the coupling do not touch each
other.
● Tighten screws 2 and 5.
● Making sure there is a slight play in the gear, move the collar up and tighten screws 3.
58.053
Fig. 11 - 10
4
0.05 - 0.1 mm
9
7
8
0.8 mm
58.019
6
2
1
1
3
5
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