Question about Sewing Machines
No manuel for grandmas machine. Where is the tension button?
There is a thumb wheel laying horizontally in the top edge of the machine on the left hand side.
Posted on Oct 20, 2013
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Posted on Jan 02, 2017
SOURCE: sewng machine motor housing
DISASSEMBLY TO INSPECT OR CHANGE BERNINA 830 MOTOR BRUSHES:
Remove the big plastic cover piece on the bottom of the machine with the single screw in the center.
Remove the machine's end panel by removing the single silver screw from underneath the bottom middle of the side panel. Pull the bottom of the side panel out and down to remove it. It comes off easily.
Remove the two screws under the motor assembly (silver screws with black washers).
Swivel the motor assembly enough to remove the belt.
There is a another plastic panel on the motor assembly over the motor itself. Remove the two phillips head screws to remove this panel.
At this point you can see the commutator and inspect the "business" ends of the brushes. (In our case, one brush was almost gone and there was nothing left of the second brush except the spring!)
You can then slide the motor out of the housing. I pushed on the motor pulley and pulled on the other end of the motor with pliers. The motor comes out rather easily, but be careful not to disturb the wires any more than necessary.
With the motor exposed, unscrew the caps over the brushes and remove the brushes.
Our motor's commutator looks significantly worn and the motor may need to be replaced. If you find a source for the brushes or a replacment motor, please let me know! Thanks, John firstname.lastname@example.org
Posted on Feb 17, 2008
Hi Rose Mary,
I'm assuming you are talking about the original Bernina 830 (their newest machine is also an 830!)
If you've not had your machine professionally serviced in awhile, it could be as simple as a good, thorough cleaning and adjusting. Your machine should be professionally serviced about every 1-2 years....not a bargain service that blows out the dust and puts oil on the hook, but a service that checks all the gears for wear, adjustments, hook timing, feed timing, grease for the gears (if required), removes lint build-up deep in the machine - very thorough.
There are various gears in the 830 that control these functions. It sounds as if one of the gears may be either broken or jammed. Unfortunately, unless you are trained in machine repair, this isn't something you should attempt. When gears are replaced or adjusted, generally the timing of the machine must be reset as well.
We would recommend that you take your Bernina to your nearest authorized Bernina dealer (they'll be trained on your specific machine and have easy access to any parts that may be needed).
If you do not know a dealer in your area, you can search on the Bernina website.
The original Bernina 830 was one of the greatest models Bernina has made and is well worth putting the money into keeping it running. Great machine!
Hope this helps narrow down what may be happening.
Kim & Linnette
Posted on Nov 29, 2008
SOURCE: Threading a Bernina 900
Place the thread spool on one of the two thread guides. Bring the thread across to the notch on top of the machine guide it to the left and down the front of the machine. Directly under that threader close to the needle wrap it down under and go back to the top right to left then go to the top lever in the up position use your wheel to the right , wrap from right to left going down and threading. Wrapping just means placing around. Now for the bobbin. take casing out wit bobbin thread counter clockwise place in casing and release handle of casing put in machine making sue it is locked in. THen go fishing.
Posted on Dec 13, 2008
there is a board inside the foot pedal that goes out sometimes you can check this by flipping the foot pedal upside down and at the top right there is a small hole where you can adjust the speed with a flat head screwdriver but be gentle it breaks easy, if its out you can take it to a bernina dealer and they might have a reapired one or they can send yours off for repair since that part is repair only
Posted on Jun 26, 2009
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