1. Remove the battery ground wire. 2. Remove the engine cover and the parts that hinder operation. 3. Rotate the crankshaft so that the first cylinder piston is in the compression top stop position, aligned with the timing marks on the camshaft and crankshaft sprocket. There are two timing marks on the camshaft sprocket. One is the timing mark when the cylinder piston is at top dead center. At this time, the cylinder intake valve and exhaust valve are in the closed position; the second is the timing mark when the fourth cylinder piston is above the stop point. At this time, the intake valve and exhaust valve of cylinder 4 are in the closed position. Determine which cylinder of the piston is at the stop point of the compression top. 4. Remove the bolts from the camshaft sprocket, and remove the timing chain and camshaft sprocket. Changzhou sprocket manufacturers 5. If you need to replace the crankshaft sprocket, please use the pull wheel to remove the sprocket. When installing a new sprocket, the chain and the chute should be aligned to prevent loosening. 6. Install the timing chain on the camshaft sprocket and fix the sprocket so that the chain can hang and align with the timing marks on the camshaft and crankshaft sprocket. The positioning pin hole on the sprocket is aligned with the positioning pin hole on the camshaft, and the sprocket is installed on the camshaft. The tightening torque of the camshaft sprocket bolts is 20N.m. 7. Lubricate the timing sprocket and chain with engine oil. 8. Rotate the crankshaft twice to check whether the engine timing marks are aligned. The sprocket is mainly made of materials with strong hardness and pressed through a special mold. The mesh belt of the mesh belt has a width of 200mm-3500mm. Normally, this wheel is used for positioning and driving. The fine-blanking sprockets are mainly made of stainless steel wires such as stainless steel 202, stainless steel 304, stainless steel 1Cr18Ni9Ti, and have special functions such as corrosion resistance, high temperature resistance, and good ventilation. The main difference between the fine-blanking sprocket and other mesh belts is that the fine-blanking sprocket is usually a gear transmission mesh belt, which has the advantages of good air permeability, average pulling force and fine workmanship. This fine-blanking sprocket has flexible rolling, good stability, High temperature resistance, pressure resistance, corrosion resistance, long life and other characteristics.