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Karen palmer Posted on Jun 09, 2019

Bernina sport 801 running slow and sparks visible from the back - could it be the motor brushes need replacing?

5 Related Answers

Anonymous

  • 6 Answers
  • Posted on Jan 24, 2009

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.

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RickE1

Rick

  • 202 Answers
  • Posted on Oct 08, 2009

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

Anonymous

  • 1 Answer
  • Posted on Jan 09, 2010

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.  

Anonymous

  • 208 Answers
  • Posted on Jan 09, 2010

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.

Debbi's Sewing Machine Repair

  • 7365 Answers
  • Posted on Aug 03, 2011

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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0helpful
1answer

I need help changing the light bulb on my Bernita 801 sewing machine. I am unable to remove the old bulb. Thank you,

Do you mean the Bernina 801 Sport? If this is the correct machine, to remove the bulb, you need to push up on the bulb and then rotate counter-clockwise. Then pull down on the bulb. This bulb is large enough that you shouldn't need a special tool to push the bulb up into the socket. When you put the bulb into the machine, push up and then turn clockwise until you reach the stop.

The manual for the 801 Sport is available here: https://www.bernina.com/en-US/Support-US/Out-of-Print-Manuals/BERNINA-manuals/BERNINA-Sewing-Systems . The current link to the manual is https://www.bernina.com/getdoc/8fdb6352-a532-4575-9854-b96eaa0a2b75/BERNINA_801_manual . You'll need to extract the zip file and look at page 40 (page 19 of the PDF) of the second part of the manual.

I hope this helps.

Cindy Wells
0helpful
1answer
0helpful
2answers

My Bernina 801 Sport sewing machine started running full speed unaided. The only way to stop it was to unplug it from power. I've unplugged the foot pedal But it made no difference.

First, is the foot control Black and/or slightly rectangular or longer and more plastic? There were two foot controls on this series. Better, I should have asked is it and electronic foot control. Likely the contact points in the foot control have broken you will have to take I think to Bernina Dealer for repsir
1helpful
1answer

My faithful Bernini 801, foot pedal will not respond. It had been hesitating prior to this. It has been replaced once already......

Most likely your machine has carbon brushes that are worn and need to be replaced. (intermittent start-stop is a strong indicator. Not sure on your 801, but a lot of the older Berninas have carbon brushes in the motor (I've replaced them on an 830), Newer models have them in the foot control. Once you locate them, you can order replacements for probably less than $20 and your machine will run like a champ! There are web sites and videos that have instructions.

sewing machine carbon Google Search
0helpful
1answer

How do I remove the top on a Bernina 807 in order to chnage th elong belt ?

V-Belt replacement 801/801 Up Machines

Only the belt cover needs to be removed for this belt change. This is done by removing the three screws on the end/belt cover. Loosen the 5mm Allen socket head screw below the step pulley to relieve the belt tension. Remove the lower motor belt. Lift the step pulley and slide off the hand-wheel, (assuming that you have already removed the release knob and clutch ring).



Additional top cover removals 807/801 Minimatic machines

Early 807 machines had two expansion nipples in the top cover that fit into receptor holes in the upper arm frame. Simply pull up the top cover.

Very late models may have a push button latch mechanism, same as on the 801 machines except those fitted with carrying handles, i.e. 801 Sport, 810 machines.

This is accessed by opening the light cover and finding an aluminum knob in the upper left hand corner of the upper arm frame. Push this in and the cover will release. Lift off the top cover.
0helpful
1answer

My Bernina 801 sport will not sew. When I step on the foot pedal, nothing happens. Sometimes it will sew for a few seconds and then stop. I cleaned it out but still will not sew

There can be a few problems that match your inquiry. Pleas check the machine in the following logical order:
  1. The power cable can be defective....With the machine plugged in and un-threaded, step on the foot control to check for a motor run condition and at the same time wiggle the cables at the motor plug connection. If the machine runs/stops/runs and stops, it is likely that the cables and or plug are damaged. Replace the cable. If the cable is found to be good, go to step 2.
  2. Check the motor run condition by changing foot controls. If the machine runs without a run/stop problem, the original foot control will have to be rebuilt. If the foot control is found to be good, go to step 3. Step 3 is for a qualified technician level of competency only.
  3. Remove the power cable, back cover, motor belt, motor housing. Remove the closing plate on the back of the motor housing to inspect the motor brushes. If the carbon brushes have worn out, you will probably find some damage to the commutator bars due to the brush springs having arc-worn the commutator. Generally, this type of damage can be repaired with excellent results. Most of the time however, motor brushes are installed by a sewing machine repair person, but no effort is made to repair the damage by resurfacing the commutator to a precision cylindrical diameter. This being the case, new motor brushes will have a very short life and further damage to the motor is likely.. Amateur attempts are sometimes made by applying some sort of tool or sandpaper to the commutator while the motor is running in an attempt to resurface, but concentricity and cylindricity cannot be achieved in such a manner....If the motor brushes are good go to step 4.
  4. Examine the commutator bars on the motor armature carefully for any burned spots on the borders of the copper commutator bar insulators. If such burn spots are evident, the armature will have two or more dead spots. At this point, the motor should be replaced.

http://www.sewtechnical.com/
0helpful
1answer

Need a wiring diagram for a bernina sport 801

You will probably find the information that you need here: BERNINA Startseite Herzogenbuchsee Info BERNINA Service Tipps Lenco...

There's a great deal of information about the mechanical Berninas but the site is in German. It will be worth your perseverance though.
0helpful
1answer

Hand wheel will not release on my bernina sewing machine what should I do?

If handwheel is difficult to turn manually, it most likely needs cleaning and oiling.
2helpful
1answer

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.
7helpful
2answers

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
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