You need to clean off the shroud so you can see the model/type/code better. Try wiping it off with WD-40, or use a wire brush. Looking at the picture, what I can see for the model is ?9?7?7. You guessed 192767 or 193767. According to Empart Web (online parts lookup), any 190000 series, if the first two digits are 19 and the 4th and 6th digits are both 7's, the model number would have to be 19X707, where X could be a 1, 2, 3, 4, 5, 6, 7, or 8. Here is a link to B&S website; you enter the model # and type - if the numbers don't turn green, its not a valid number. This web page also has links to find your model number (which you've already done), and what the numbers mean:
Engine