WARNING: This page is about a different car, the 2011 Nissan Juke. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Starter Motor Components With Torque Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.
NOTE:
Apply high-temperature grease to lubricate the bearing, gears and frictional surface when assembling the starter.