Hello Evelyn,
You will have a devil of a job getting hold of an instruction book for that model if you are in the UK, the only possibility is to try tandtrepair.com this is a major Singer supplier of books and spare parts mainly in the US or you may be very lucky as a first try if you type in Kenmore sewing machines, scroll down to Relics and you will find the 507 book available from the US.
Ken
Ken Dourof
May 2007
howtomendit.com for free repair help, information and advice.
