Bob- I am going to assume you have a "newer" style orange F-10 and not the green one. Ours has the extra valve and plumbing for the push-off for stacking hay, so again I will assume it can be used for a grapple. Here's how it goes: The pressure line comes up on the left rear "upright" near the reservoir parallel to the pressure line that feeds the main control valve. The line goes in the rear of the pushoff/grapple control valve. The two lines going to the grapple cylinder come out the top (not sure which is which, but pushing the valve lever to the left (in) will return oil to the reservoir). The return line from the grapple valve comes out the front and threads into the front of the main control valve, in line with the line that goes out the back of the main control valve to the reservoir. One other thing- the pressure line feeding the valve has a "y" in it and the "y" ties into a cast part (part #2716 or 2718) that connects to the other return lines above the tank. I assume this is a relief valve of some sort. I will add that I personally have never used this extra control valve because we no longer make the big hay stacks, but this is how it is still plumbed. Sorry for the lack of pictures and the long post, but I hope this helps some.
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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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