SOURCE: presser foot lever fell off
You'll need a 2.5 mm hex key metric (you can buy a complete set in Radio Shack for about $10 if you don't have metric). AND you will need to cut down the shorter end of that key about half way (total remaining end will be around 8 mm), as there isn't room for the whole key in that tiny space.
Open the light bulb door, it should be easy to see where it goes but you may need two pairs of hands.
If you take it into a Bernina dealer, they should do it for free as it takes like one minute! Hey...you can ask for nothing! Those guys have all the right tools but there's no mystery, so don't listen to any nonsense.
SOURCE: I have bernina sport 801 machine and need to know
You can oil any two metal parts that move togeather or through each other. Do not oil bearings and do not oil gears. Do not use 3 in 1 oil or WD-40. Use regular sewing machine oil.
801's were made from 1979 - 1982. The way Bernina dated these on the machine is by the serial number. Your number would probably start with a 0 or a 1. 1970 is a 0, 1971 is 01, 1980 is 1, 1981 is 11, 1990 is 2, 1991 is 21 etc. etc.
Rick
SOURCE: My Bernina 730 record can only run the zig-zag
Sewing machines needs full service now and then (every 10 years will often do). The motor on the 730 series is actually as powerful as they get on domestic machines, and handles just about everything that fits under the pressure foot. Only if the machine has been used a lot over the years are the brushes worn down, but it might need new grease not matter how little it has been used.
However, the stitch applications can sort of gum or clog up if the machine has not been used for ages. Take a look in the manual and oil ever point suggested every time you take out the machine. Try them now and then on slow speed, that might get every function to run smoothly again.
This is as good a machine as any out there, favorably compared to any new machine under 500£. It sews perfect stitches on just about any material, and is well worth a full professional service (At a shop they will always recommend a new machine they want to sell you). All kinds of pressure feet and accessories are available in regular sewing shops and online.
Check with different shops for price on full service. This is a great machine what ever they tell you.
SOURCE: I have a bernina sport 801 and the fabri feeder
There is a small knob on the lower part of the main body under the stitch length lever. This controls the feed dog up or down. Make sure that it turns easily and fully to both positions. If it does and your problem persists, the feed dog height adjusting point is probably loose. A knowledgeable repair person needs to look at it. It is not a difficult repair, but several approaches need to be taken.
SOURCE: My Bernina sport 801 is
clean under the needle plate
clean the bobbin area for loose threads or lint
if this doesn't make the noise stop then it may need to be serviced
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