Small Engines (Lawn Mowers, etc.): 14hp B&S twin cyl, briggs stratton, piston

Question
I need to know the stock bore size on my Model #  400707, Type 0126. I would also like to know how much oversize I can go. Thank you, Dale

Answer
Sorry Dale, I don't have all of this information.  All I can tell you is that, according to the Briggs & Stratton website and your numbers, a 0.030" over piston is the largest oversize available.  If you are having a machine shop do the boring, they can recommend the oversize you need, you order the piston and they will bore to match the piston.  Hope this helps.