Note that the front door (apron?) locks the ejector when itís all the way down/closed. The cable must lift it a little before the ejector cylinder can stroke.
Note the cylinders are large bore designed for about 1000 psi hydraulics

Add note 1 and note two and you can see that itís possible to severely damage the ejector when using a farm tractor with modern hydraulics. All it takes is a broken cable and the rear/ejector cylinder will push through the ejector or bulge the cylinder wall.

If youíre going to use it as designed, it helps to have the tires at max pressure so it doesnít suck into the cut so bad. Itís quite possible to stall a 200 plus HP MFWD tractor while loading at normal speeds. You had better be in a gear with throttle set so the tractor will spin out or be quick on the clutch! That being said, in our heavy ground a power shift MFWD tractor of that size is much more productive than a seemingly more practical 120-150 hp one.

In light ground you can do a lot more with a small tractor. The center/frost bit helps a lot too.