Thank you for looking for me but it's mighty odd Mark. I am looking for a belt for the 117.740. I also own the 117.841 which this belt is "guaranteed to fit" but I don't think it will. I currently have a 13 3/4" belt on my 841 which I bought from Sew Classic. The belt in the link would be much too big for the 841.
In fact the service manual says for the 840 and 841 models, the part number should be 73008.
However this belt may very well fit the 740. I may have done the same search as you but when I got that result saying this belt would fit the 841, I probably discounted it as probably too small for the 740. Looks like this may be the belt I need after all. At this point I've paid for the belt from my local SC so hopefully it fits. If not, I may resort to taking my machine in or rely on stretch belts.
Thanks to Quiltedsunshine too. I wish I lived in Utah - I'd go to your shop!
Last edited by KenmoreGal2; 01-05-2015 at 07:36 PM.