try posting this question on the MH/MF discussion board here. That's where the MF experts reside. I have a MF 135 and 165, and you could first check the breather tube that comes out of the top of engine. If the tube is crimped or clogged it will create too much backpressure. Its happened to me. Disconnect breather tube and clean out and make sure the tube exit point is clear. Also, after cleaning try blowing into tube to check obstruction in cover screen where tube originates - but you must remove oil filler cap first when doing this. Like I said, post this question on the MF board and there are many good folks there to help you with your MF 150. Good Luck.
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Today's Featured Article - Tractor Implements and Their Use - by Curtis Von Fange. Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he reached his early sixties
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