I am attaching the info below on how to fill and bleed this system but there is no bleeder screw on this engine. There is a pressure relief on the cap so please pay attention to number 3 in the attached documents.
However, here is a guide that help with this as well:
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.