3. D5-Evo Manual override 3.1. Disengaging the Manual gearbox/drive Override Carefully flip to the side the camlock cover and insert the key and rotate it 90° clockwise. While holding onto the key, pull open the access door to expose the manual override thumbwheel. Page 11: Re-Engage The Gearbox/Drive 4. D10/D10 Turbo Manual override 4.1.