How do I stop Fax from feeding more than one copy of typed sheets through the machine at onc time?

Try to rep[lace the paper separation rubber.

...I'm starting to think the feed rollers clutch can be the cause..
Yes, it is!

(Dal nome credo che tu sia italiano, dunque il problema sta nel gommino antirumore che si trova sul solenioide presa carta che fa rimanere incollata la leva di sgancio. Basta che lo togli e hai risolto.)
Ciao

Sounds like the separation pads in the paper tray are worn out. You can contact Brother and purchase the parts from them. It should be less than $10. as long as the paper is being pulled from the tray it sounds like the rollers are okay.

check the feeed rollers ateh seperation roller the one that seperates the pages is worn.. it has proberly worn the tread and if its sn=mooth or worn it wont stop multi feed

You either have a paper path blockage or your feed rollers are worn. You'll need to take it apart to check though. Try removing paper, turning machine off and on and re-inserting paper. Remember to fan (separate) paper before loading, it could be static causing the sheets to stick together and jam in the machine.

You could try opening the feeder and clean the gray rollers with mentholated spirits and see how that helps as it just maybe the rollers are slipping slightly.

Once you have done the above take out all of the paper from the back feed and using one sheet blot the leading edge with some spirit and place back into the machine (The back of it) then try coping something there will be a paper jam and do this a couple of times. Once you have done this wipe the area dry put new paper in and then try doing a copy and the paper should feed perfectly now and the test will come when fax comes in.

I do hope this helps you
Thanks J

Most likely you will need parts. When fax machines do this, the paper separation pad is worn out or wearing down. If you get parts, you'll need both the pad and feed roller that ride on the pad.

I don't really want to get into this, but you sound desparate. i don't work on your model very often, so bear with me. When a sheet jams, don't just pull it out. Open the document feeder as far as you can and note where it stopped (the side tha DID NOT feed). Look for a possible obstruction or even spot of something that looks dirty or sticky. If so, remove or clean it. Look at the leading edge of the jammed sheet, see if there are any indentations that could possibly line up with a sensor flag, roller edge, etc. Last suggestion. Press down of the side of the document feeder that DID NOT feed through. If this helps, then there is a problem with the latch that holds the document feeder closed. Without seeing the unit it is difficult to diagnose correctly. Let me know one way or the other. Any observations will be helpful. Ed One more thing! Make sure the leading edges of the pages you are sending are perfectly straight and smooth. Make sure that they HAVE NOT been stapled at one time (the indentation can cause a problem)

try to open your fax machine ang check paper feed gear maybe 1teeth of gear is broken..or maybe your machine incountered feeding timing error.

Technically, your machine is jammed. The paper is jamming as it exits the feed area, and enters the machine. Not being specifically familiar with that model, but rather based on experience with other simular machines with like problems, I would say you should look for 3 possible causes... Most machines have, shortly into the paper path, and generally in the area you're indicating, some sort of sensor switch, whether it be photo-electric, or a mechanically activated toggle, that senses and registers the lead edge of the paper so the machine knows it did feed. This switch could be knocked out of place, or simply dirty, and not sensing the lead edge of the paper within a certain period of time after the machine registers the feed had been actuated. A second possible cause would be (and you may be able to visually verify this) is that usually, in these types of machines, there is some sort of pressure or "retard" pad/roller in conjunction with the feed roller. If this isn't working right, the machine may be feeding more than one sheet at a time, and becoming jammed in the paper path path area due to "thickness". A third possible issue could be an unremoved scrap of paper from a previous jam (or a staple/paperclip/piece of rubber-band/or any other foriegn object, as I've seen them all) still remaining in a thin and obscure position of the paper path blocking the paper's progress to the afformentioned switch. Those are the most likely, but probably not the only possible, causes of the problem you are exoeriencing.