How to Navigate with the Karoo Hammerhead Computer Before your ride, we will show you how to bring up the route in the Karoo Hammerhead 3 . 1. Turn on: long press “5” 2. Go to menu: press “3” 3. Touch routes 4. Touch “Sweetwater Res Area” 5. Touch your selected route 6. Select route: Press “4” 7. Swipe left or right to see map 8. To start ride: press “4” 9. To pause ride: press “4” 10. To change route: touch “route” 11. To remove route: touch “remove route” 12. To select another route: touch “route”