Feed dog lever singer 7442 - Singer 7442 Mechanical Sewing Machine

SOURCE: How do I raise and lower the feed dog on my singer

On your Singer, you don't actually raise / lower the feed dog. Instead you attach a "darning plate" (which should have come with the machine) which covers the feed dogs so they do not come in contact with the fabric. See a page from the owner's manual using this link within my web site: http://www.sewvac1.com/Singer3080_Feed_Drop.pdf

SOURCE: Singer 7442 How to get inside ?

http://www.scribd.com/doc/3713782/Singer-7442-Sewing-Machine-Manual heres your manual, good luck!

SOURCE: I own the singer advance

The 7442 does not have feed dogs which can be dropped. You need to use the "Darning Plate" which came with the accessories.
http://www.singerco.com/accessories/manuals.html

SOURCE: I have a singer 4830C. Is it possible to lower the

No, but it does come with a cover for them so you may do free-motion sewing.

SOURCE: I have a Singer Stylist 513 & I cannot get the feed dogs raised.

The model 513 Singer has two gears which operate the feeding mechanism. If one of these gears is broken, the machine will run except the feed dogs will not move. This is a very common problem with this model.