Rear view of dirty serger, as we purchased it This Bernina 800D serger needed a new light bulb, of the narrow base screw in type. Rust often forms where old lint sucks all the oil out of the metal, a good reason to CLEAN YOUR SERGER, after sewing, before storing your serger for long periods of time. Rick sprayed PB Blaster into a spare lid, for me to dip my Qtips in, to apply it to all the rusty, frozen partsĮven with the pliers, and a rubber protective cover, I could not get any movement out of this serger, due to both old sticky oil, and rust, FREEZING IT SOLID!
Upper looper bearing was rusted, and frozen solid, so we had to remove the timing screw underneath the lowest point of the upper looper, but it still wouldn't budge, even after hours of soaking with TriFlow oil, cleaning, and rust removal, using PB Blaster! (My first time using PB Blaster) My hubby, Rick, a college trained mechanic, recommended it, and used a C clamp to carefully, gently, force the upper looper up through the pivoting bearing, so I could clean off the rust and dried oil.Notice, that with the front door cover removed, and the plastic bottom covers, we could fit the C clamp through the opening in the frame of the serger, to screw the clamp so it could push the upper looper, up from the bottom, by slowly turning the screw on the C clamp.
Plastic is only used on the exterior of the serger.) (Some techs charge $100 to $200 for this kind of a service, but considering the hours that can go into cleaning and fixing a machine in this deplorable condition, is definitely worth it! Notice that while this serger was assembled in China, for Bernina, it is all metal mechanical working parts, inside.
BERNINA BERNETTE 800D SERGER MANUALS
Normal serger manuals do not give you instructions for a deep oiling, like you would normally pay a service technician to perform for you. There are 2 separate videos, showing the inner metal parts. These are photos of the Bernina 800D serger, with all of the plastic covers stripped off, it shows you the MANY inner working parts, which require oiling, to keep it running for years. (I paid $30, just because it was a Bernina and had the pedal and cord, even though we had no idea if it ran at all, and turned out to be frozen solid.) For a $20 serger, you kind of expect this kind of mess. This isn't actually a large amount of lint, it looks so nasty, due to the rust! This is before I cleaned it out. Time, of course, also causes the old oil to dry up, and turn into a lacquer, or glue, which can also freeze your sergers and sewing machines, into solid blocks of metal.
Lint absorbs the oil and lubricants from the metal, and then holds moisture it absorbs from the atmosphere, causing rust.
Lint is the enemy of sergers, left inside your serger, especially if you live in a humid environment, it will cause rust to form. My hubby helps me fix sewing machines and sergers, it is how I have good sewing machines, that I couldn't otherwise afford! Note, I had not put the front door back on, after timing it, when I sewed this stitch sample, and took this photo. After repairs and oiling, test stitching, shown with 4 different colors of threads, shows that it works correctly, that the timing is right.
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