Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat.
Drain engine coolant so its level is below thermostat.
Remove the radiator lower hose (A).
Remove water inlet fitting (A), gasket (B) and thermostat (C).
Tightening torque :
7.8 ~ 11.8N.m (0.8 ~ 1.2kgf.m, 5.8 ~ 8.7lb-ft)
Installation is reverse order of removal.
Install the thermostat with the jiggle valve upward.
Fill the engine coolant.
Start the engine and check for leaks.
Recheck the coolant level.