Hello I have a singer model 4552 I cant make the pressure foot stay up...the lever doesnt raise the foot high enough what doi do?

Pages E and F show the parts. Probably a spring that has come adrift.

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https://www.google.com/search?q=Singer+Advance+7422+foot+release+Lever+won%27t+stay+up

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Could be the presser foot is not applying enough pressure to the feed dogs. Check your owner manual for instructions on increasing the presser foot pressure. Could also be that the feed dog height needs to be adjusted or their teeth are worn (do not run the machine without fabric between the presser foot and feed dogs).

Yes indeed, it is possible--sounds to me like a screw worked itself loose. However, I would purchase the service manual for your machine. As a bonus, it tells you how to make all kinds of useful adjustments.

Go to Sewing Parts Online and do a search under Singer Service Manuals; if they don't have it in stock, call or email them and they will be happy to order it for you. Generally takes two weeks to get it in stock.

just raise the little lever on the bobbin case, slide it on the metal "post" then let go of the lever.

Start with the manual: http://www.manualslib.com/products/Singer-9008-353399.html
You may be missing a screw. Clean and oil carefully looking for small bits of thread and lint. If this doesn't work, take it to an expert.

It could be as simple as the set screw in the lifting collar has came loose. If you open the end piece and raise the lever in the back up and down you should be able to see if the collar is loose. It will be on the pressure bar and it is the piece the lever pushes on to lift the foot. If just loose you have to put it to where it needs to be on pressure bar to lift it high enough and tighten the set screw.

yes, pressure foot lever should stay raised, this sounds like the spring has broken in your machine. if you are comfortable with delving into the machine you could open it up and take a look. alternatively take it to a sewing repair man and get it serviced as well as clean and lube.

Move your handwheel towards you so that it can come down.

Hi. Here's how to attached the zipper foot.

To Attach the Zipper Foot
1. Loosen the large screw at the left of the presser bar and remove presser foot (You do not need to remove the screw).
2. Hook the prongs of the Zipper Foot around the presser bar from the back, and tighten the presser-bar screw.
3. If the raised edge (zipper or cording) is to the right of the needle, adjust the Zipper Foot by loosening the thumb screw at the back of the foot and sliding foot to the left of the needle. If the raised edge is to the left, slide foot to right.
4. With presser foot down, check its position by lowering needle into side notch, making sure it just clears the foot.
5. Tighten thumb screw to lock foot into position.
When raised edge is placed to right -- adjust foot to left of needle.
When raised edge is placed to left -- adjust foot to right of needle.

It is a presser foot. And a presser foot lever.

There is no lock - look to see if there is packing that has not been removed.