Are most Briggs and Stratton alternator systems belt driven hang on the side of engine?

Briggs and Stratton engines can have different types of alternator systems, and the design and location of the alternator can vary depending on the specific engine model and application. Some Briggs and Stratton engines may have belt-driven alternators that are mounted on the side of the engine, while others may have gear-driven alternators that are integrated into the engine's design. It's always best to refer to the specific engine documentation or consult with a Briggs and Stratton authorized dealer or service center to determine the type of alternator system and its location for your specific engine model.