When you move the quadrant lever to a position, it moves the "hole" part of the valve out from under a "cover," allowing oil to flow out the hole.
Some part of the hitch mechanism is connected to the cover part of the valve, so that when the hitch moves, the cover moves. Things are timed such that when the hitch gets to the desired position, the cover has moved back over the hole, stopping hydraulic flow.
We had a 560 with the tel-a-depth system for many years. Of course we never used the fast hitch for plowing or anything like that. It was an adjustable-height drawbar and it made a great bead breaker for tires. The tel-a-depth worked just fine.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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