Pfaff 3811-11/43, Instruction Manual

Page: 48 / 72

48
21.6 Hook motion
(timing)
Requirement:
If, when turning the handwheel
- the point of the hook, coming from the right hand side, is just to the righthand side
of an 80 Nm needle (fig. 14)
and
- any further upwards movement of the needle bar is blocked by the screw
clamp (fig. 16) in this position, the point of the hook should
- be just on the right hand side of the needle (fig. 15) when turning the
handwheel in the opposite direction until the clamp screw touches the needle
bar frame.
.1 Insert a new 80 Nm needle.
.2 Turn the handwheel until the point of the hook, coming from the right hand side, is just on the left
hand side of the needle (fig. 14).
.3 In this position, fasten the clamp screw (fig. 16) onto the needle bar so that the clamp screw touches
the needle bar frame (upwards movement of the needle bar is blocked).
.4 Turn the handwheel in the opposite direction until the screw clamp comes to rest again on the
needle bar frame.
In this position, the hook point should be just to the right of the needle (fig. 15).
.5 Alteration if necessary:
- Remove the screw clamp
- Turn the cog 20 (fig. 17) accordingly (screws 21).