This Crank Balancer diagram displays the required parts for the Ls650 Boulevard S40 2014 (l4) Usa (e03) Crank Balancer.
Some items from this specific schematic: Shim(20x28x0.5), Shaft,crank Balancer, Gear,crank Balancer Driven, Bearing(20x47x14).
In this schematic the "Spring" is used most often.