Front port in the head connects to the tube going to the top of the governor housing. Rear port in head has pipe connected to it going to the intake pipe on the air cleaner. If you look close the line over the valves has a small hole in it. Supposed to draw air or some of the crankcase mixture of stuff out. Some pullers plug the rear head port and run them without the pipe. Another way is to put a 2 inch long 1/4 inch pipe nipple in the front head hole under the cover. Then get a 400 or 450 valve cover and run a PCV hose from the opening in top of it to the air cleaner pipe. If running a regular air cleaner?
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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