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Hi Jerry, That very front hitch assembly has a lengthwise large "hole" in the middle. The "spine" of the plow is mounted on a large "pipe" that inserts thru this hole and is then collared and pined at the front of the hitch from which the hitch then pulls the plow. Right behind the hitch assembly is an 8 inch hydraulic cylinder that is lying down crosswise and horizontal. It is hooked to the hitch on one end and the plow "pipe" on the other. When the hydraulic lever is thrown, the plow spins about this pipe in the 'hole'. The guide wheel goes down and around underneath with gravity releasing a weighted mechanical "catch" and then as the plow comes on up thru it's spin, the wheel then 'drops' and hooks the catch again to hold it in position for the other direction. With the hydraulic cylinders' action, the plow spins on the pipe either 180 degrees one way or 180 degrees the other way to give the plow two direction operation. The whole spinning process takes about 3 or 4 seconds depending on how much oil restriction a guy has put in those cylinder hoses. 'Bout have to use the restrictors, 'cause the tractor is wound up and she'll really come around and might break something when it hits the stops, if allowed full hydraulic flow. When I get my plow bought and hooked up, I'll take a series of pictures to show how the silly gizmos "flop over". :>) Allan
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