I have a ranch king pro riding lawn mower 18.5hp briggs&stratton v twin I was mowing my yard Thursday afertnoon around 2.00 pm and it quit me and I email you all yesterday afternoon I am not for sure if its firing it will start and then just quit I need help me with this problme

Hi,
I gather that this may be an opposed twin and fuel sounds like the problem. The fuel pump is the common source of problems on this engine and is built into the front side of the carb. There are two possible most easily distinguished by the number of screws holding it together, three or four. Could be the filter, but it sounds like fuel.
Peace,
Clarke