Rear Upper Arm Installation Note

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Jack up the vehicle to the unloaded condition, and support the trailing link using a jack.
Temporarily tighten the rear upper arm in the order of the axle side and then the rear crossmember side.
Tighten the bolts to the specified torque.

Fig 1: Supporting Trailing Link Using Jack
Courtesy of MAZDA MOTORS CORP.