>> A << Thermostat Housing/Water Pipe Assembly Installation
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
Assemble the thermostat housing and water pipe, and temporarily tighten them to the cylinder head and water pump. Then tighten them to the specified torque of 24 ± 3 N.m (18 ± 1 ft-lb).