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The 'outboard' lever is the draft control. 'Ferguson System' Draft control will attempt to maintain a constant (pulling) load on the tractor by moving the the 3 point lower arms up or down. Theory was if you hit a tough spot while plowing, it would raise the plow enough to give weight transfer to the rear wheels and keep you going. If you look at the point were your top link attaches to the tractor, you can see it almost looks like the end of a cylinder. In a sense, it is... Thats where the load on the top link is sensed by Ferguson system and internally the 3 point hydraulics respond to it's inputs. The Ferguson System sensitivity and response delay time are controlled by a small quadrant lever down by the floorboard. They let you tune how the 3 point will respond to changing loads. In constrast, the inboard position lever will raise and lower the three point arms and hold them in whatever position you want.... come hell or hard ground. When you're using Fixed position, the Draft control lever should be all the way to the rear....(and vice versa for things to work right) Note that the inboard lever will 'creep' rearwards if you don't have the friction screw tightened enough... A good investment would be purchase of an operating manual from our (gracious) site hosts... Hope this helps. I don't plow much, but use draft control when I'm tilling and mowing.
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