MODEL 1525, LOOKING FOR PART
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Please not the solution needed is in step 2
The purpose of this guide is to provide somepractical and effective things to do when your sewing machine stopped working.
You will be AMAZED at how often sewingmachines arrives at the sewing shop when basic things were not done properly!Wrong or blunt needle, incorrect threading or lack of oil to name a few. Byfollowing the next 5 steps, your machine should work properly or really needs avisit to the sewing shop.
So, where do you start?
First, lets check some basicguidelines. No matter what type and make of machine, basic principlesremains the same.
STEP 1: CLEANING AND OILING. Remove the upperthread, bottom bobbin or shuttle and needle. With the presser foot up, try torun the machine at full speed for one minute. If you hear a noticeable variationof the speed, your machine may need some oil. If you still have the manual thenfollow it. If not, proceed like this: try to remove the top cover if yourmachine has one. If not, you should be able to find holes on top of it. Applyonly a drop of SEWING MACHINE OIL (not 3 in 1 oil or any other kind of oil orrust inhibitor). Next, reach the bottom of your machine. If it isequipped with a base cover, try to remove it to gain access to themechanism. After removing any dust, lint, broken needles debris andstraight pins, apply a drop of oil to each moving part. By turning the handwheel slowly (always towards you for 98% of them), you will see all the movingparts joints that needs to be oiled. Many parts already have a small holeespecially for oiling. Remember one small drop of oil in each joint isenough! Please note: If your machine's handwheel turns towards the backlike the old White-Rotary, always turn it the same way!
STEP 2: THE FEED DOGS. With a flatscrewdriver, remove the needle plate retained by 2 screws. On some Elna, Pfaffand Bernina models, you will have to remove the bed's top plate on which theneedle plate is fixed. Some of them are snapped in place and no screws areholding them. When removed, clean the feed dogs. Try to pass a rag under themand with an old needle or narrow tool, remove the lint inside the feedchannels. Put back the needle plate. If your machine is equipped with a FEEDDROP, be sure the feeds are set at UP position. By turning the hand wheel(towards you), check to see if the feeds make their movement. While doing this,you may check also the reverse mechanism to see if the feed dogs movesbackward. If the feeds does not move at all, a major problem occurred, do notgo further!
STEP 3: THE UPPER TENSION.Most sewing machine problems are related to the thread tension. Learn thisbasic principle right now: the upper tension determines your UNDER stitch. Andthe bobbin (bottom) tension determines your UPPER stitch. Unless you are experimentedto dismantle the upper tension unit or if it's explained in your manual, followthis simple technique. Dust, lint and pieces of broken thread often stickbetween the tension discs. This cause a gap between the tension discs and nopressure is applied to the thread resulting of thread loops underneath. Take an8" length of thread and make 3 to 4 knots in it (as pictured below).Thread your tension system with this piece of thread a few times in alldirections. This will remove any lint residue between the tension discs. Try itfor the first time with the presser foot UP and then with the presser footDOWN. When the presser foot is down and the tension dial set at number 4, youshould be able to feel a tension when pulling the thread. If so, the uppertension system is working properly.
STEP 4: THE BOTTOM BOBBIN.Your machine can be equipped with a removable bobbin case, a drop-in bobbin ora shuttle. First, try to wind a bobbin with the bobbin winder. If you see asmall hole close to the bobbin spindle, apply only a small drop of oil and wipeany excess. Check also for the condition of the bobbin winder rubber tire. Ifyou can see cracks and worn flat surfaces, replace it. This verypopular item is available at any sewing shop for a dollar or so. Whenwinding a bobbin, check to see of the thread winds evenly from each side of thebobbin. Then check the bottom of your bobbin case. Remove any lint pancake. Installyour bobbin in it. By pulling the thread, you should feel a very soft tensionon the thread. If not, some clogged lint may be laying between the smalltension spring and the bobbin case itself.
STEP 5: THE SEWING TEST. Assimple as it looks, you have made all the basic steps any repairmen will do ona sewing machine! It's time now to try it by doing a professional sample.First, install a BRAND NEW NEEDLE ( 14 if possible). So many troubles arerelated to the needle, even if it looks like new, don't take any chance! Insertthe needle the right way. The flat side has to face left, back or right. Referto your manual. Just in case you have no manual, here are some tips. The firstsystem is a FRONT LOAD machine (front load means you put the bobbin/bobbin caseIN FRONT of the machine. It can be a front drop in bobbin or a bobbin caseplaced under the machine in front of you. On such models, you always insert theneedle so the flat side will face rear of machine. You will thread the needlefrom FRONT TO REAR. The other system is the LEFT LOAD machine. On any make(except many Singer machines), the flat side of the needle shank should facethe right side of machine. You will need to thread the needle from LEFT TORIGHT. This apply also to the old shuttle Singer 27, 128 and 128 machines andmodels 99, 185, 192, 217, 237 and 239.
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