Switched mine twice already without a tool. The belt is stretchy and a bit muscle will pop it on.

@fourchains

Not sure; the 3.0Si crank dampener has a larger front section on the crank pulley, and makes it nearly impossible to stretch that belt over the front section to get it on the grooved section. Almost mandatory to stretch it over the compressor pulley instead, after positioning the belt on the crank pulley.