Looks like it left something behind in that banjo bolt. You may need a new banjo bolt too if you can't clean that one up.
I think I gave the wrong # the first time
Bleed screw 70000-65203
Banjo bolt 70000-65202
Copper washers 15221-96650
These are parts for a Kubota L2050 tractor, which uses a version of that engine.
FYI, some Kubota tractors have a jet valve instead of the screw. But it has a return hose that connects with the injector return hoses, which I don't see on yours. Saves some mess when priming the injector pump.