I own a Necchi model 535f......I have had it cleaned and oiled in the last 4 years....I can't get my fabric to feed through my machine

I suspect the knob on the lower right hand side is the feed dog knob. The "knit" symbol is for the feed dog. One setting drops the feed dogs so you can move the fabric yourself, ie free motion quilting. The other setting raises the feed dogs so the machine will feed the fabric for you.

to find a manual, Search the internet:
Brand + Model + the word "Manual"
...

You may need to lower or increase the pressure on the fabric. You will also need a ballpoint needle for best results.

1) Check the feed dog pressure adjustment. 2) Check the feeding mechanism at the bottom. It may be too low to feed your cloth.

necchi's are good sewing machines, I personally own 2 necchi's,
and I've never had any problems with them and I've had them for around 10 years, here is what I suggest
use a new needle--one that is for the fabric your sewing
rethread the machine top and bobbin--use every thread guide
try a different bobbin
clean under the needle plate and in the bobbin area for lint
call a sewing machine repair shop in your area and ask them how
much a necchi sewing machine is worth or check on ebay and see
what they are selling for.
since you inherited the sewing machine,, having the machine
serviced completely would be a good idea, that way they can check
to see if the grease and oil that the gears and parts use is fresh or
needs to be replaced and it's very important the grease and oil are in
good condition.
and they can make sure the machine's is timed correctly
ask how much a tune up cost for a sewing machine and then
you'll have to decide if the price is what you want to pay.

also since the sewing machine is doing repeat loops from the bobbin
adjust the top thread tension just a little at a time till the stitch looks
normal on a scrap piece of fabric
if you don't have a manual on the sewing machine let me know & I'll try
to find you one.
I've been sewing for 30 years, and like I said I have 2 necchi's already
and I had one other one before these 2 that I have now and it lasted me
for around 15 years and I wore it out making clothes.
I wouldn't hesitate to buy or except another necchi because I know
they are good machines.
I have a mechanical and a electronic necchi and my husband uses the
electronic one when he makes quilts.
good luck on your decision
Merry Christmas and A Happy New Year

the presser foot or what ever foot your sewing with does not feed the
fabric,, the feed dogs in the needle plate are what moves the fabric
to be sewed, the feet only hold the fabric against feed dog so the
machine can use the needle to sew the fabric.
if the fabric is not moving then the feed dogs have to be checked
can you see the feed dogs in the needle plate area are the up or
down?
do you have a manual for the machine?
a manual help to know where the feed dog lever is, I'm sending
you a link for a manual for the machine, so you can look for the feed
dog lever, if the feed dogs are up then there is something wrong
with the feed dogs & they need to be checked.
but if the feed dogs are down then look in the manual & see where
the feed dog lever is & put it in the up position & see if that brings
the feed dogs up to the sewing position, if the feed dogs do not
come up then the feed dogs need to be checked.

http://www.sewingpartsonline.com/instruction-manual-necchi-6015.aspx

Machine breaks needles
1.make sure you are using the right needle for your type of sewing machine.
Most machines can use generic Schmetz needles. There are cases where the machine will only use ones specified in the owners manual.
2.the presser foot may not be installed properly
3.use the correct needle for the type of fabric you are working with. To fine of needle on heavy fabric or to course a needle on silk or jersey can damage fabric. make sure the correct needle for silk is being used.
4.let the feed dogs guide the fabric & the feed dogs will work with the presser foot .
5.the needle is not all the way in -push all the way up against the stop

also clean under the needle plate & in the bobbin area for lint or loose
threads
check to make sure the feed dogs are completely in the up position

if none of these suggestions work then it's possible that the machine
is out of time & would have to retimed at a sewing machine shop

Be certain the presser foot lifter handle is down so that it holds the fabric from the top. Then make sure the feed dogs (the little toothy looking things under the presser foot) are up or engaged. Often we'll accidentally knock the adjustment button/lever and the feed dogs go down into the machine and will not come up to provide the pulling action to feed the fabric through. Make sure the mechanics inside the machine are clean and free of dust. And if you see what seems to be a piece of felt around the feed dogs, that is actually lint and prevents the fabric from moving through easily. Use the brush that came with the machine to clean the feed dogs. Hope this helps and happy stitching!

The Necchi machine has a lever in the bobbin area that lets you move the feed dogs up and down. If you accidentally moved that, the feed dogs are in the down position and won't feed the fabric forward. Make s ure you can feel the feed dogs slightly above the plate. If they aren't move the lever until they do. :)

This is not a commercial machine and will give you trouble trying to sew upholstery,especially if you use heavy upholstery thread. You will get loops on the bottom.
It will sew only short stitches,No matter how long the stitch length is, because it only feeds the fabric from the bottom and it will stick.
It should sew regular fabric with normal threads with no problems. There is a pressure adjustment on the top of this machine which may be where your problem is located.Look in your book for instructions.Also, make sure the feed dogs are in the highest position. I don't know how long you've had the machine but if it has been awhile,remove the needle plate and clean the lint out from between the feed dog teeth.
sewman7

There is a serger attachment available for that model. When you attach it to the machine you must start the fabric from the top of the foot. The foot won't cut the fabric if you feed it under the foot. You will want to use the Wide zigzag, overlock, or hemstitch stitches. Set stitch length knob on #4 for overlock stitch #1-0 for hemstitch or zigzag. Set the stitch width to the maximum. Make sure the hook arm is inserted over the needle screw so that when the needle goes us and down the attachment will work. Start on the edge of your fabric by making a small cut about 1-2 cm deep and about the same distance from the edge as the cutting blade. This will make it much easier to feed the fabric over and then under the foot. Remember to start the fabric on top of the foot and then feed it under the foot before it reaches where the needle would penetrate.