Pfaff 138 Sewing Machine Instruction Book
This service manual for the Pfaff 138 sewing machine covers all aspects of operation and maintenance. Included are sections on threading, bobbin winding, tension settings, and specialized stitch functions. Part Number 91-041 420-05.
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Sample pages from the Pfaff 138 Sewing Machine Instruction Book manual
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Models Covered & Key Technical Specifications
Pfaff 138 Sewing Machine (91-041 420-05) - 1970s Operation and Maintenance | Sewing Machine Library
- Reference Output Performance: 39 pages establish the complete documentation.
- Approved Linear Velocity: The machine operates at speeds up to 6000 stitches per minute.
- Designated Gross Dimensions: Machine dimensions are 18 x 7 x 12 inches.
- Essential Rotational Force: The motor requires 110-120V input power.
- Baseline Play Limits: Not applicable for this sewing machine model.
- Fundamental Burn-in Temperature: Not applicable for this sewing machine model.
Professional Workshop Service Manual & Technical Specifications
Pfaff 138 Sewing Machine Instruction Book: Comprehensive PDF
Unit-Designations: Pfaff 138 Sewing Machine // Operational-Framework: Sewing Machine / Instruction Manual Logic // Calibration-Scope: Operational Procedures.
Technical Specifications
| Integrated-Framework | Rating | Context |
|---|---|---|
| Language Availability | Multi-language | English, German, Spanish, Italian |
| File Size | 7.46244 MB | Digital document size |
| Document Type | Instruction Manual | Official operating guide |
Systems and Procedures
Setup and Initial Operation
The service manual covers initial setup procedures, including machine cleaning and oiling on pages 4-5. It details safety instructions and important notes for first-time users.
Threading and Stitching
Comprehensive guidance is provided for threading the upper and lower threads, winding the bobbin, and inserting the needle. It documents various stitch types and their adjustment.
Maintenance and Troubleshooting
Information on cleaning the machine, regulating tensions, and troubleshooting common issues such as skipped stitches and thread breaks is included.
Specialized Attachments and Functions
The manual details the use of various presser feet and attachments for specific tasks like buttonhole sewing, quilting, and blindstitching.
Part Identification
Includes diagrams and part numbers for wear parts and accessories, aiding in identification and replacement.
Torque Statement: This manual does not specify torque values as they are not applicable to sewing machine adjustments.
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