Needle Rise, Hook-To-Needle Clearance, Needle Height And Needle Guard - Pfaff 3734-2/01 Instruction Manual

Adjustment
12.

Needle rise, hook-to-needle clearance, needle height and needle guard

04.05
● Loosen screws 1, 2, 3 and 4.
● Bring the needle bar to 1.8 after b.d.c.
● Place the adjustment pin in hole 5 and apply pressure.
● Position the hook point towards the centre of the needle, taking care to ensure that the
● Adjust the needle height according to requirement 2.
● Adjust the hook post according to requirement 1 and tighten screws 4.
12 - 6
Requirement
When the needle bar is positioned at 1.8 mm after b.d.c.
1. The point of the hook must be pointing to the centre of the needle and have a clearance
of 0.05 – 0.1 mm to the needle.
2. The top edge of the needle eye must be 0.8 – 1.00 mm below the hook point and
3. The needle guard 9 must lightly touch the needle.
8
8
5
Fig. 12 - 05
needle is not deflected by needle guard 9.
4
4
9
2
6
7
2
3
1