A pulley assembly for an automative machine and methods for adjusting the pulley assembly are disclosed. The pulley assembly may include a monolithic body, an actuation assembly, and a pulley. The monolithic body may define a recess extending from a first end surface toward a second end surface thereof. The recess may at least partially separate an upper portion of the monolithic body from a lower portion of the monolithic body. The actuation assembly may be operably coupled with the monolithic body and configured to apply a biasing force to the upper portion of the monolithic body to actuate the upper portion of the monolithic body towards or away from the lower portion of the monolithic body. The pulley may be rotatably coupled with the upper portion of the monolithic body such that the pulley moves when the upper portion of the monolithic body is actuated.