I didn't find a service manual for your oven, but the Installation and Use Manual has a section that might be of interest.
[link|https://www.fulgor-milano.com/sites/default/files/2021-12/F1SM24S3%20-%20Installation%20%26%20Use%20Manual.pdf|F1SM24S3 - Installation & Use Manual.pdf|new_window=true]
***Removing the oven door***
The oven door can be removed quickly and easily. To do so, proceed as follows:
* Open the door fully.
* Lift the two levers shown in fig.
* Close the door as far as the first stop (caused by the raised levers).
* Lift the door upwards and outwards to remove it from its mountings.
To replace fit the door, fit the hinges in their mountings and lower the two levers.
[image|2917213]
This makes it look like it's almost too easy to remove the door. Hopefully with these instructions it'll be just as easy to replace it!