Vibrating Presser Clearance - Pfaff 487 Service Manual

2.

Vibrating presser clearance

17
Requirement
At stitch length setting "0", when the presser foot is resting on the needle plate and the
vibrating presser is at top dead centre, the clearance between vibrating presser and needle
plate must be as follows, depending on the top-feed type:
Fig. 2 - 15
Increase the presser foot pressure somewhat on screw 1 (nut 2).
Lower the presser foot onto the needle plate.
Position the eccentricity of pin 3 (screw 4) facing the needle bar.
Position the eccentricity of pin 4 (screw 6) facing downwards.
Turn the balance wheel until link 7 is in its far rear position.
Push lever 7 (screw 8) down and insert the corresponding feeler gauge (see
Requirement) between the vibrating presser and the needle plate.
If fine adjustment is required, turn eccentric pin 5 (screw 6) accordingly.
1.3 mm for pulling-type top feed
3.2 mm for pushing-type top feed
For sewing thin materials the top-feed stroke on machines with pushing-type
top feed can be limited to 2.0 mm. To do so, set pin 9 (nut 10) fully down its
elongated hole.
1
2
Adjustment
10
9
8
7
5
6
4
3
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