I work at the local golf course and we use this type pump for several applications. The line from the crankcase will sometimes fill up with oil or sludge if the engine has a lot of wear on the rings and has blow by. To check for proper operation of the pulse line from the crankcase. Pull the line loose on the pump end and place some soft grease over the opening so that it completely covers the hole. Run the starter to crank over the engine, If the grease does not suck in and blow out, you do not have enough action to operate the pump. Sometimes the line is full of crud also. The OEM pulse type for a Yamaha will choke you with the price. Go to the local small engine place and they will have them that fit, Tecumseh, Briggs and also Kohler. All the same pump just the lines are oriented differently. These will often be 1/2 the price of the OEM pumps and do the same job. I use the Kohler style most often. You will have to be sure the pressure from an electric isn't too much or the needle and seat to control. The plastic ones are usually less expensive than the metal ones. The pumps we have tried rebuilding did not ever work satisfactorily so we decided to take the price of a kit and applu it to the new one. One other thing, small engine gasoline filters are made in 2 types. One type is for fuel pump and the other type is for a gravity flow tank.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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