Yamaha Aerox Motor – does anyone know what this is?

Hello dear scooter community! I’m brand new and inexperienced here, so please don’t mind if something doesn’t work out the way it should 🙂 I’m 20 years old and recently bought an old Yamaha Aerox Mbk Nitro year 2003 to bring the “old” scooter times back to light. I’m just about to bring everything up front and renew old/caputed parts. If everything goes as far as I need help. In the appendix there are 2 pictures where ic h me think that it can’t be that way and something is missing. I’ve already tried to figure out which cover it could not be useful. Is there something missing and if so what would it be necessary for? My knowledge stings behind it water pump + ignition? I thank you in advance for all the answers and in advance a nice weekend everyone! ??