814 Repair Manual — Volume I — Page 29

b) DP-DY-DT-DV-DLF Vehicles: Mixture in carbon monoxide (CO) : 1.8 to 3.6 % : Mixture in carbonic gas (coz); superior to 8.7 % NOTE : These mixtures in CO and CO? must be obtained with the engine at the correct idling speed. If necessary, operate simultaneously on the mixture screws (1) and (4). Finally operate mixture screw (4). NOTE : The CO and co? mixtures, correspond to an outside air temperature of between 15° and 30° (67° and 86° F) 7. On Vehicles with hydraulic gear change : Adjust idling screw (5) accelerate to bring the engine to a idling speed of 900 + 25 rpm. i)