- Remove the block coolant
heater and washer, if applicable.
- Remove the left side coolant
drain plug (113) and washer (114).
- Remove the restrictor (431) and O-ring (430).
- Remove the right side
coolant drain plug (110), fitting (111) and washer (112).
- Remove the restrictor (431) and O-ring (430).
- Remove the knock sensor (720).