(1) Remove all spark plugs with spark plug sleeves.
(2) Turn the crankshaft with the disc fixing bolt through the spark plug hole with a manual wrench or sleeve (note: the crankshaft can only rotate in the normal rotation direction of the engine crankshaft). Make the piston of cylinder 1 close to the top dead center. Remove the blind plug bolt located about 5 cm behind the crankshaft position sensor (CKP). Install and tighten No.2 special tool directly by hand. Turn the crankshaft clockwise again (the direction of normal rotation of the engine crankshaft) so that the crank of the crankshaft contacts the No.2 special tool, and then turn the crankshaft counterclockwise by about 30-60.
(3) Turn the intake and exhaust camshafts gently with hand tools. Make the intake and exhaust cams of 1 cylinder in the position where the intake and exhaust valves are all closed (so-called "above"), and then put the special tool 1 into the timing slot of the intake and exhaust camshaft from the rear plane of the cylinder head.
(4) Turn the crankshaft pulley fixing bolt with the tool according to the normal rotation direction of the engine crankshaft again, so that the crankshaft is in close contact with the No.2 special tool.
(5) Remove the crankshaft pulley fixing bolt (don't let the crankshaft rotate), remove the crankshaft pulley, find the 1 M6x 18 bolt and tighten it by hand. Fix the crankshaft pulley on the engine timing cover (note: the fixing bolt can be tightened by hand. Never tighten them with tools. In addition, there are 1 bolt holes for installing M6 bolts on the crankshaft pulley disc. When installing, the crankshaft pulley should be vertically downward and aligned with the bolt hole on the timing cover.
(6) Fix the crankshaft pulley reversely with special tools or the same tools, gently fix and lock the crankshaft pulley fixing bolts, and then remove the M6x 18 bolts for positioning the crankshaft pulley. It should be noted that the crankshaft pulley fixing bolt must be locked in two stages: tighten it to100n.m with a torque wrench; ; Tighten the bolt for another 90 degrees with an angle ruler and a torque wrench.