Pfaff 3117 - Needle Thread Scissor Return Motion

Adjustment
14 - 50
3
4
1
2
Fig. 14 - 48
● Insert the needle. See section 11.01 Inserting the needle.
● Bring the machine to program end position.
● Disengage the stop motion device.
● Loosen grub screw 1.
● Press guide 3 upwards as far as it will go.
● Move the trip piece 2 in the direction of the arrow until the needle thread scissor is flush
with the inner edge of the work clamp. Tighten grub screw 1.
● Loosen screw 4 and raise the trip piece 2 in height in accordance with requirement 2.
● Tighten screw 4.
14.20.06 Backwards motion of the needle thread scissor
Requirement
1. When the work clamp is lifted, the needle thread scissor must not touch the needle.
2. Before the needle thread scissor moves back to its initial position, it must catch the
thread securely.