Raymarine e7 User Reference page 228

Resetting all datapages
You can reset the datapages in the data application to the factory
defaults.
1. Select Menu.
2. Select Reset All Pages.
The confirm reset pop up message is displayed.
3. Select Yes to reset or No to cancel the action.
Note: Resetting all pages will restore your pre-configured pages
to default settings and remove any custom pages that have been
created. Number of engines and maximum RPM settings will not
be changed during the reset.
228 e7 / e7D — User reference