Adjustment
12
15.04.06 Needle rise, hook clearance, needle height and needle guard (on the PFAFF 1591 and 1593)
Regel
With the needle bar positioned 2.0 mm after BDC and the stitch length set at "0.8"( only
on the PFAFF 1591).
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 6 must touch the needle lightly.
Turn on the machine
Set the stitch length to "0.8" and sew 3 stitches.(only on the PFAFF 1591).
Turn off the machine
Loosen both screws 1, 2, 3, 4 and 5.
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
defl ected by needle guard 6.
Adjust needle height according to Requirement 2.
Adjust hook post according to Requirement 1 and tighten screws 4 and 3.
Making sure that there is some play in the bevel gear, tighten screws 2.
With retaining collar 7 touching bevel gear 8 tighten screws 2 and 3.
Screws 5 remain loose for further settings.
Adjust needle guard 6 (screw 9) in accordance with requirement 3.
When the hook is changed, make sure that the markings 10 and 11 are both on
one side.
6
9
4
5
5
1
4
3
7
8
2
0,8 - 1 mm
10
11
Fig. 15 - 06
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