:mur:I have a craftsman mower with the briggs and stratton 675 series engine 190cc. I took off the muffler,and now wont run. It starts for a minute then bogs down,after that it wont start until completely cooled. Then the same thing happens over again. I noticed,when it was running for the minute, the choke air vane was fluttering back and forth. Would the tab on the choke need to be bent? Any help is much appreciated ..:mur: