Professional Full Edition Service Manual For Singer 401 & 401A Sewing Machines.

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Complete Service Manual<br>for<br>SINGER 401, 401A<br>SEWING MACHINES<br>*********<br>Includes<br>:<br>Timing and Adjusting Instructions, Inspection and Replacement of Machine Parts, Electrical Diagrams, Illustrations, Repair and Replacement of Motor Components, and much more<br>for<br>Singer 401, 401A Machines<br>*********<br>Singer 401, 401A Service Manual. (photo 02)<br>This is NOT a standard "Xerox"<br>copy of the Singer manual!<br>This manual is<br>professionally<br>printed<br>on the same<br>heavy-weight pure-white paper<br>as the<br>original Singer manual!<br>Heavy-weight brilliant-white paper. (photo 19)<br>Description:<br>This listing is for a professional reproduction of the Singer Manufacturing Co. Service Manual for class 401 sewing machines. This is NOT a standard "Xerox" copy of the Singer manual! It is<br>professionally printed<br>on the same<br>heavy-weight pure-white paper<br>as the original Singer manual! It is super clean, the text and the illustrations are very sharp, and it is nearly identical in size and in paper type to the original Singer manual. This manual is not a bunch of pages stapled at the top corner. This manual is<br>professionally bound<br>, just like the original Singer manual.<br>Manual is professionally bound. (photo 14)<br>***************<br>This manual is professionally bound,<br>just like the original Singer manual.<br>***************<br>Unlike the original 60 year old manual that has become frail, brittle, mildewed, stained and yellowed after so many years, this manual looks like an original Singer manual that has been preserved in<br>NEW CONDITION<br>!<br>Just like the Singer company printed their manual on their in-house printing press, we printed this manual on our in-house printing press. This manual may also serve you for the next 60 years.<br>In fact, if we didn't tell you,<br>you could not tell the difference<br>between this manual and the<br>original manual!<br>This 42-page full-size Service Manual is complete and very clean with no "black dots," smudges, stains, or any other imperfections. No pages are missing, dirty, or damaged.<br>The manual includes descriptions and illustrations which will show you how to do the following<br>:<br>Identify the Principal Parts of Machine 401<br>Description of Class 401 Machines<br>Preparation of Machine for Inspection<br>Lubricate Class 401 Machines (professional service lub)<br>Set Presser Foot at Correct Height<br>Set Feed Dog at Correct Height<br>Set Feed Dog Lengthwise in Throat Plate Slots<br>Set Feed Dog Sidewise in Throat Plate Slots<br>Eliminate Noise in Feed Movement<br>Adjust Thread Clearance<br>Feed Timing<br>Set the Check Spring<br>Adjust Needle Thread Tension<br>Set Needle Bar at Correct Height<br>Check Position of Needle in Relation to Straight-Stitching Throat Plate<br>Eliminate Side-Shake or Binding of Needle Bar<br>Check These Points When Stitch Regulator Sticks, Creeps or Binds<br>Eliminate End Play or Binding of Feed Rock Shaft and Feed Lifting Rock Shaft<br>Eliminate End Play or Binding of Hook Driving Shaft<br>Eliminate End Play or Binding of Upright Arm Shaft<br>Eliminate End Play or Binding of Horizontal Arm Shaft<br>Set the Index Pins at the Correct Height<br>Time the Cam Stack<br>Set Cam Selector Arm Stops<br>Zero-Out the Machine<br>Centralize the Needle Bar Driving Arm with Disk Selector Arm Bracket Followers<br>Centralize the Needle in Needle Hole in Straight-Stitch Throat Plate<br>Time the Rotating Hook<br>Set the Position of the Hook Point to or From the Needle<br>Removal and Replacement of the Upright Arm Shaft<br>The Motor<br>Removal and Replacement of the Light Fixture<br>Removal and Replacement of the Wiring Harness<br>Removal and Replacement of the Needle Thread Tension<br>Removal and Replacement of the Hand Wheel and the Counterb