When operating a car, sometimes, depending on the quality of the fuel being refueled, it becomes necessary to correct the ignition timing. The ignition timing is corrected by an octane corrector 3 (pic. thirty) an ignition distributor that allows you to reduce or increase the ignition timing. Signs "+" (advance) And "—" (lag), printed on the scale of the octane corrector, indicate the direction of its rotation.
Adjust the ignition timing on a warm engine. Before adjusting, mark the position of the middle notch of the octane corrector on the cylinder block. When driving on a level road in direct gear at a speed of 50 km/h, depress the accelerator pedal sharply. If this causes a slight and short-term detonation, then the ignition timing is set correctly. With strong detonation (early ignition) loosen nut 1 and turn body 2 0.5-1 notches clockwise (on In the absence of detonation (late ignition) turn housing 2 0.5-1 division counterclockwise (on "+").
After adjustment, tighten nut 1 and check again for correct ignition timing while driving.