Im trying to find the model and serial #s on the briggs and straton motor to get a carb kit and oil seals. Im not finding any numbers stamped on the engine anywhere. The model # for the riding mower is 425009x8A. The serial number is 7478511221U227. The customer # is 309-666 MFG date is 02112. I have given the model number to a parts provider and they tell me i have the wrong numbers. Any help would greatly be appreciated. The carbeurator is a Walbro product made in mexico.