Feed dogs aren't lifting :( Sewing Machines Parts and Sales in Los Angeles

I, quite stupidly, decided “you know what might be good? lowering the feed dogs for shits and giggles! Maybe then we can see knits”. I’m not having shits and giggles. I can’t get them to raise! I’m on a really cheap machine – a Bush one – and the manual is literally no help. The lever to raise them just isn’t working…help!