Thermostat Installation Note

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Install the thermostat by fitting the projection on the thermostat to the recess of the thermostat case.
Install the thermostat.

Fig 1: Installing Projection On Thermostat
Courtesy of MAZDA MOTORS CORP.