What is the normal operating temperature of the Piaggio hexagon 125 lx (2 bar)

Servus I recently created a Piaggio hexagon, since the temperature meter flutes have gone to me then bought an electronic temperature meter from koso. Now I wanted to know what such normal temperatures are so from when the engine gets too hot. The scooter is completely original except for a 21mm dellorto carburettor because the old was defective and an open air filter Thanks already for the answers. (Added a picture)