Hook-To-Needle Clearance, Needle Bar Rise, Needle Height And Needle Guard (On The Pfaff 571) - Pfaff 571 Adjustment Manual

13 Hook-to-needle clearance, needle bar rise, needle height and needle guard
.04.04
(on the PFAFF 571)
Rule
With the needle rise positioned 2.4 mm after BDC of the needle bar and with stitch
length regulation "0"
1. the hook point should be at the needle midpoint, and should be at a distance of 0.05
to 0.1 mm to the needle,
2. the upper edge of the eye of the needle should be 0.8 to 1.0 mm under the tip of the hook.
3. the needle guard 5 should lightly touch the needle.
4
Fig. 13 - 04
 Set the stitch length to "0".
 Loosen all of the screws 1, 2, 3 and 4.
 Adjust the needle bar positioned 2.4 mm after BDC.
 Set the hook point on the middle of the needle and take care that the needle is not
squeezed by the needle guard 5.
 Adjust the needle height according to rule 2.
 Adjust the hook post according to rule 1 and tighten the screws 4 and 2.
 Tighten the screws 1 allowing for bevel gear wheel movement.
 Adjust the retaining collar 6 up against the bevel gear 7 and tighten the screws 3.
 Adjust the needle guard 5 (screw 8) according to rule 3.
5
8
When changing a hook take care that the markings 9 and 10 are on one side.
Adjustment
5
9
2 3
6 7
10
1
9