Garmin GNS 430 Pilot's Manual & Reference page 126

To delete all user waypoints from memory:
WPT PAGES
1. Select the user waypoint list, as described on page 116.
6
2. Press to display an options window for the user waypoint list.
m
Deleting All
3. With "Delete All User Waypoints" highlighted, press .
E
User Waypoints
4. A "delete all waypoints" confirmation window is displayed. With "Yes?" highlighted, press
E
to delete all user waypoints from memory.
118