Click the right mouse button on the piston pin body to choose Properties of piston pin. The user can modify the property of piston pin in the following dialog.

Figure 1 Piston Pin property page
•The user can make Clearance between bodies using the value in the
box.
•Reference Parametric Marker: Controls the position of piston pin. It is also special parametric marker.
•Length and Outer Diameter: Are also special parametric values.
•The user can modify the parametric value in this page.
•These values are enlisted in special parametric value list.
•Inner Diameter: Is independent value which is not related with other entities.

Figure 2 Geometrical information of piston pin