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Pfaff
Sewing Machine
487
Pfaff 487 Adjustment Manual
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Adjustment
28
●
Adjust bobbin case opener eccentric
1
(scre
ws
2
) according to
Requirement
.
Fig. 1 - 24
1
2
3
1
.06.22
Bobbin case opener motion
Requirement
When the needle bar is in position
1
.8 mm past b.d.c.
(adjustment hole "4"), bobbin case
opener
3
must be in its far right position.
27
29
Table of Contents
Table of Contents
3
Adjustment
4
Notes on Adjustment
4
Tools, Gauges and Other Accessories for Adjusting
4
Abbreviations
4
Explanation of the Symbols
4
Checking and Adjusting Aid
5
Adjusting the Basic Machine
6
Balancing Weight
6
Needle in Needle-Hole Centre
7
Neutral Position of Drop Feed
8
Adjustment with the Gearcase Opened
9
Actuating Lever under the Reverse-Feed Control
10
Feeding Motion of Drop Feed
11
Lifting Motion of Drop Feed
12
Height of Drop Feed Dog
13
Clearance between Presser Foot and Needle Plate
14
Top Feed Actuating Link
15
Neutral Position of Top Feed
16
Feeding Motion of the Top Feed Dog
18
Vibrating Presser Clearance
19
Top Feed Lifting Motion
20
Position of Lifting Presser
21
Synchronizing the Top Feed
22
Stitch Length Alignment
23
Eccentric Hook Shaft Bearing and Hook-To-Needle Clearance
24
Final Adjustment of Needle Rise, Needle Height, and Bobbin Case Position Fi Nger
25
Bobbin Case Opener Height
26
Adjustment of the Bobbin Opener
27
Bobbin Case Opener Motion
28
Needle Thread Tension Release
29
Thread Check Spring and Thread Regulator
30
Bobbin Winder
31
Knee Lever Resting Position
32
Knee Lever Play
33
Knee Lever Stroke Limitation
34
Position of Vibrating Presser in Relation to Lifting Presser
35
Pressure of the Vibrating- and Lifting Pressers
36
Stitch Length Limitation
37
Parameter Settings (Only on Machines with Ecodrive and Control Unit P40 ED)
38
Parameter List
38
Circuit Diagrams
39
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Instruction Manual
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Service Manual
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Pfaff 487 Specifications
General
Brand
Pfaff
Model
487
Category
Sewing Machine
Language
English
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