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Question About White Sewing Machine 1977
White 1977...

White 1977

Asked by Judy on 11/30/2013 1  Answer

ManualsOnline posted an answer 10 years, 10 months ago

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Rewarder User posted an answer 10 years, 6 months ago

5 Bobbin case-the part the bobbin goes in. Also known as shuttle. In old long bobbin machines, the hook and the shuttle were one part. Round bobbin machines use a separate hook and a bobbin case. I will cover the complete basic repair step by step. First lesson: All sewing machines work on the same principle. All sewing machines thread the same way. All needles are inserted the same way. Yes, it sounds crazy, but read on, I'll prove it. When you apply these rules, you can correctly thread any sewing machine without the instruction book. 1. Tools: Assortment of good screwdrivers, sewing machine oil, toothpick,old needle or pin, lint brush, optional: compressed air or (canned air), high quality, white or pastel colored thread (do not use black or a dark color) I will explain later, piece of medium weight fabric and a NEW needle. 2. Remove the top cover, bottom cover, needle plate,pressor foot, bobbin case and hook (if it snaps out) note: if you must remove screws to take these items out, leave them in. 3. Clean: Lift the pressor foot lever and remove the pressor foot. We want to remove the packed in lint and dirt. Use a toothpick to remove the packed in lint from between the feed dog teeth and in the hook area.Use the old needle or pin to Check for and remove any lint or thread from under the bobbin case tension spring and between the upper tension discs. This is where the "canned air or compressed air will help. Look closely and remove all of it. Now use the lint brush or compressed air to blow out the loose lint. ( at this point the professional repairman will check And adjust if major adjustments are needed) 4. Lubricate: Use Tri-Flow lubricant, or second best, high quality sewing machine oil. All purpose oil makes repair shops a lot of money. If you don't have HIGH QUALITY SEWING MACHINE OIL, find some gun oil. Now pour in a quart or two, this will fix any problem. GOT YOUR ATTENTION? Most sewing machines are damaged by too much oil rather than too little oil. When oil gets in to the motor or on rubber belts, get the check book, it could get rather expensive. Nothing can turn a $50.00 repair in to a $200.00 repair faster than a can of oil. Turn the handwheel, look for moving parts and use only a tiny drop of oil any place where two pieces of metal are rubbing together. A hypodermic syringe or a tube type oiler is best for this. An oil can is a poor substitute, as you usually get several drops or can't reach into tight places. 5. Re-assemble everything except the needle plate. 6. Insert a NEW needle. All sewing machines (not sergers), less than 50 years old may safely use the 130/705H (15X1) needle system. If you have a choice use 130/705H (I recommend Schmetz brand) as some modern machines may be damaged by the 15X1 system. Also certain popular brands of needles may cause serious damage in machines they were not designed for. Schmetz 130/705 H needles are safe to use in ALL machines manufactured since the 1950's. Older machines may use a different needle system check your instruction book. NOW, all needles are inserted the same way (in relation to the hook). Examine the NEW needle. Notice it has a long groove on one side, the other side has a short groove or no groove at all. Insert the needle in the machine the way the old one came out or the way you think it should go. Now turn the handwheel in the normal sewing direction until the hook point is at the needle. The long groove should be opposite (away) from the hook point. If not, turn the needle as needed. NOTE: The hook cannot pick up thread from the long groove side of the needle. The hook should also pass the needle about 1/32 inch above the eye of the needle, If you have the correct needle system and the timing, needle bar height is correct. The needle is now inserted the correct way for this machine. 7. Replace the needle plate. 8. Thread the machine: (IMPORTANT) RAISE THE PRESSOR FOOT. Choose a high quality, light colored, thread. Dark thread makes it hard to see where the stitch is locking. Be sure to use the same thread for the top and the bobbin. The dye used in dark colored thread offers more resistance to tension. Don’t believe it? Try using black on the top and white on the bobbin. If you insist on using cheap (3 for $1.00) or old thread, close the machine now and use it as a door stop. Buy your thread from a fabric shop or sewing machine dealer. The big super centers are a poor place to buy good thread and needles. Most, (not all), low priced threads have thick and thin areas, thus making it impossible to regulate thread tension. Remember, I said ALL sewing machines thread the same. RULE: All sewing machines thread in the following sequence. A. Tension B. Takeup lever C. Needle
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