Kenmore 1230 / 1240 / 1250 Sewing Machine Service Manual

Inside the Kenmore 1230, 1240, and 1250 Sewing Machine Manual

• Built for owners servicing the Kenmore 1230, 1240, and 1250 Zig-Zag sewing machine models
• Official OEM publication Part No. 52917
• Contains 17 illustrated parts diagrams and a detailed troubleshooting matrix for common performance issues
• File delivered as a direct download the moment payment clears
• Suitable for printing individual sections for shop-floor use
• Full-text search finds any part number in seconds
• This official 47-page technical guide serves as the foundational reference for maintenance and part identification for the 1230, 1240, and 1250 series units

Operational and Maintenance Coverage

The Kenmore 1230, 1240, and 1250 manual provides a clear breakdown of machine controls and specialized sewing configurations. The initial chapters document the identification of major machine components, including top thread tension settings, stitch width adjustments, and the specific usage of the Special Stitch Variegator found on the 1240 and 1250 variants. The text describes thread paths, bobbin installation, and the critical balance between top and bottom tension for various fabric weights. Subsequent sections detail garment construction techniques, including straight stitching, zigzag applications, blind hemming, and stretch-fabric management. The document also details the maintenance requirements for the shuttle assembly, including cleaning and lubrication points necessary for long-term machine operation.

Specification and Performance Data

The manual includes essential data for tuning the Kenmore 1230, 1240, and 1250 for specific projects. The provided how factory workshop documentation is structured includes a comprehensive needle, thread, and fabric chart for matching components to material types. Common stitch settings are listed at 10–12 stitches per inch for standard applications. Stitch width control parameters for buttonholing and mending are provided as reference ranges for varying fabric thickness. A troubleshooting table lists common issues like skipped stitches or fabric movement, documenting corrective actions such as needle size selection and thread tension adjustment. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This 47-page Kenmore OEM workshop manual covers the 1230, 1240, and 1250 series, documenting essential controls, performance specifications, parts lists, and maintenance procedures for these versatile sewing machines.