Introduction:
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This manual is designed to assist in the repairing of the Singer 700 Series machine. It is applicable to the following machine models:
750, 758, 756, 770, 778, 755, 771 and 775.
Others models that are similar in respect to the tension, hook timing and top end adjustments are: 776, 774, 724, 714, 717, 719
These models differ in the bobbin case style used and adjustment procedures.
The overall objective of this manual is to familiarize your self with your machine, show you how maintain, repair, adjust and install
simple to complicated parts. It'll provide pictures, and with what I feel are rather simple to follow instructions. I’ll be pointing out the
parts, their names, functions and locations. Some special tools may be required to help you complete the job efficiently, and if you
intend to repair the machine yourself, I highly suggest investing in some of these tools. As with all repair manuals, or guides, it is
assumed that you have some basic mechanical skills, and practice safety when using any sort of hand tool.
The first section will cover the basic parts of the machine, and the most commonly used terminology, or names of the parts. The
second section of the will cover basic service, and things to look for while you have the machine open. Next we’ll get into simple
parts replacement and adjustments, and finally we’ll get into the major overhaul of the machine, along with major parts replacement.
Anytime you take an item apart, it is highly recommended to lay the parts out in the order of disassembly, so give yourself plenty of
working room. If you use the kitchen table, countertop or workbench, always place an old piece of carpet, or towel on the work
surface first. This will avoid making a mess of the surface, and help provide protection to the paint job on the machine. Most
hardware stores have carpet runners, or something similar to a front door place mat that is rubber backed. This also helps and will
keep it from sliding around on you while you’re working on the machine. And while I’m at it, let give you one basic piece of advice
on how to handle a screwdriver. You don’t just put a screwdriver onto a screw and assume it will loosen the first time you apply
pressure. Sometimes it is necessary to give it the old snap routine. If you don’t understand the snap routine, allow me to explain as
best as possible. When you’re going to loosen a screw, or even a bolt on a car, and you find it is rather tight, don’t sit there and brut
force it. On a car, we’d normally find a leverage tool, or otherwise call a breaker bar to attach to our tool being used. Well we don’t
normally do this on a sewing machine. Rather, we place the proper screwdriver into the slot of the screw, and start to give it some
short and simple quick snapping twists, while not attempting to make a full break loose unscrew the screw turn. Put the screwdriver in
the slot of the screw, apply enough pressure to get a good grip and firm lock, and give is a little snapping turn. A snapping turn is best
described as perhaps attempting to turn the screwdriver only about a quarter or less of a turn. Just a short burst of power, rather than
grunting down on it with all your might. For those that understand, it’s like using an impact wrench, it provides a small burst of power
just enough to crack the bolt, or screw in our case, loose. I certainly hope you get this, as you’ll find it necessary in repairing your
machine, and to avoid breaking screws off, or rounding them out and rending them useless. Another word of caution, as you go
through this manual you may think that using a thread locking compound might be a good idea, well
DON’T. If you have to do it
again sometime, as is the case for any basic servicing, you’ll have to loosen those screws again, and locking them with a compound
will make that job just that much tougher.
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