I'm not familiar with this engine.
However I've just looked at the eLearn for the Nuova Bravo 1.4 and there are no timing marks. Instead you have to use both camshaft and crank timing tools.
The complication you will find is that the camshaft timing tool (actually a screw in locking pin) sets the camshaft in a position of not TDC but 90 degrees out. This means that the crank shaft has to be set to bores level (90 deg) on the intake stroke.
I'm afraid you are going to have to purchase or rent a 1.4 timing tool kit. Before doing this you also need to 100% identify your engine type number and possibly serial number to ensure you get the correct kit.