I have one with a B&S engine. The problem that i am having with it is it is sometimes hard to start. It just sounds like it wants to turn over but it wont. Then it will start after a few trys. The other problem is that when it runs it isnt smooth and it is blowing oil out the muffler. It runs right for a second then it will die down and go back up to full throttle. It isnt the choke. I have changed the spark plug. What could it be. Has 250 hours on it. First problem i have had with this machine. Will take it to a BS dealer tomorrow unless you guys can help me out. Thanks in advance.