How to proofread the ignition timing of Chery A5?

1. Remove valve cover. 2. Shake the crankshaft so that the concave parts on the two camshafts are opposite (the angle of the camshafts when removing the cylinder head bolts). 3. Insert a special tool (shake at the same time) at the rear end of the camshaft to fix the two camshafts. 4. Remove the bolts located on the steel body and the special bolt hole for fixing the crankshaft at the lower right of the throttle valve. 5. Insert it as a special tool (when you shake the crankshaft until you can't shake it left and right) to fix the crankshaft above the corner. ...