Singer 631 Sewing Machine Service Manual.
Examples include:
* Inspection and lubrication.
* Presser and needle bar height adjustment.
* Time the rotating hook.
* Needle thread tension assembly.
* Hand wheel removal and replacement.
* Cam stack.
* Much more!
50 page manual.
Great diagrams!
manualsoncd.com
sewingwithsinger.com
sewingmachinemanuals.com
