Honda 2003 Insight Owner's Manual page 177

Cooling System
4. Loosen the drain plug on the
bottom of the radiator. The
coolant will drain through the
splash guard. Remove the drain
bolt and washer from the engine
block. Drain the coolant into an
appropriate container.
174
Maintenance
DRAIN BOLT
RESERVE TANK CAP
RESERVE TANK HOLDER
5. Remove the reserve tank from its
holder by pulling it straight up.
Drain the coolant into an
appropriate container, then put the
tank back in its holder.