Singer 400W1 User Manual

Guidelines for using specific Singer oils and lubricants for proper machine function and longevity.

Details on Singer machine models 400w1 to 400w5 and their characteristics.

Overview of Singer 400w series machines, their capabilities, and recommended operating speeds.

Instructions on setting up the machine, including drip pan and knee lifter placement.

Specifies the types of Singer oils recommended for the 400w machines.

Details on needle classes, varieties, sizes, and how to order them.

Information on the correct twist for needle thread and proper thread usage.

Step-by-step instructions for safely removing the bobbin from the bobbin case.

Procedure for winding thread onto the bobbin using the bobbin winder.

Detailed instructions on how to thread the bobbin case correctly.

Guidance on how to properly reinsert the threaded bobbin case into the machine.

Instructions for installing and setting the needle at the correct height and position.

Step-by-step guide for threading the needle and upper thread path of the machine.

Procedure to bring the bobbin thread up to the needle thread before sewing.

Instructions on starting sewing and safely removing the finished work from the machine.

Instructions on how to use the device to sever threads during operation.

Visual examples of correct, tight, and loose needle and bobbin thread tensions.

Detailed steps to adjust needle and bobbin thread tensions for optimal stitching.

How to adjust the pressure of the presser foot on the material using a screw.

Procedure for changing the stitch length using the stitch regulator and indicator.

Key advice for smooth and efficient machine operation and maintenance.

Explanation of timing marks on take-up discs and face plate for proper component alignment.

Guidance on adjusting the take-up spring for correct thread tension and movement.

Instructions on setting the presser bar bushing and guide for correct operation.

Procedure to align the presser foot with the needle for accurate stitching.

How to adjust the tension releaser to release spring pressure on tension discs.

Procedure to set the needle bar to the correct height using timing marks.

Steps to correctly time the sewing hook relative to the needle bar and needle.

Detailed instructions for removing and installing the sewing hook assembly.

How to adjust the oil flow regulator in the hook shaft bushing for lubrication.

Procedure for removing and replacing the hook driving shaft and its components.

Steps to replace the drive belt connecting the arm shaft and hook shafts.

Procedure for replacing the drive belt for the small take-up shaft.

Instructions for removing and reinstalling the small take-up shaft.

Detailed procedure for removing the arm shaft from the machine.

Instructions on the care, lubrication, and handling of ball and roller bearings.

Information to identify genuine Singer needles and their containers.