Needle Rise, Hook Clearance, Needle Height And Needle Guard (On The Pfaff 1571) - Pfaff 1571 Adjustment Manual

Adjustment
15 Needle rise, hook clearance, needle height and needle guard
.04.05
 Turn on the machine
 Set the stitch length to "0.8" and sew 3 stitches.
 Turn off the machine
 Loosen both screws 1, 2, 3 and 4.
 Bring the needle bar to 2.0 mm after b.d.c. and place the locking pin for the needle bar
 Set the hook point to the centre of the needle, taking care to see that the needle is not
 Adjust needle height according to Requirement 2.
 Adjust hook post according to Requirement 1 and tighten screws 4 and 2.
 Making sure that there is some play in the bevel gear, tighten screws 1.
 With retaining collar 6 touching bevel gear 7 tighten screws 3.
 Adjust needle guard 5 (screw 8) in accordance with requirement 3.
10
Requirement
With the needle bar positioned 2.0 mm after BDC and the stitch length set at "0.8"
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 to 1.0 mm below the hook point;
3. the needle guard 5 must touch the needle lightly.
8
5
4
Fig. 15 - 05
defl ected by needle guard 5.
When the hook is changed, make sure that the markings 9 and 10 are both on
one side.
(on the PFAFF 1571)
5
9
2 3
6 7
10
1