Bummer... I am not specifically familliar with your tractor, but you may have a bleed nut on the top of the filter housing to vent the air. You may also have a bleed nut on the top of the injector pump to get all the air out of the injector pump housing. My Jinma actually has a ring thru the head of the bleed screw on the pump housing so it can be opened without tools. You need to get all the air out of the system up to the injector pump housing using that hand pump. Once you get the air out of the filter housing and the pump housing, it can be a good idea to go back and vent the filter housing again. If the filter is above the injector pump, sometimes purging the pump housing will allow air to go back up to the filter housing. It is important to get ALL this air out of the line feeding the pump before going on to the hard line purging.
Once this is done, as mentioned crack the injector hard lines at the top and crank the engine till you get fuel out of those fittings. A white rag wrapped around the loosened fittings is good for this as it will quickly show the fuel and help contain the mess. If you have a compression release, using it will save some wear on the battery and starter while you crank the air out of the hard lines.
Once you get fuel out the top, snug down the hard lines and she should start. It may run a little rough for a little while untill any final air bubbles work loose. Any cylinder that dosn't fire still has too much air in the lines for the injector to crack. Sometimes tapping the lines with a screwdriver handle can help work bubbles loose.
Good Luck
