The time is challenging, and significant powertrain damage may result from mistakes, thus the procedure should be handled by experienced personnel; if not sure, professional advice is recommended. Start with the removal of the negative cabled from the battery, and then position the engine to, TDC compression as per cylinder number 1. Siphon out the engine oil and have the drivebelt and its tensioner pulled off, not forgetting removal of the timing chain cover and the valve cover. Take out the timing tensioner, upper timing chain, exhaust camshaft sprocket bolt, and the timing chain guide, adjustable timing guide, fixed timing guide bolts, intake gearbolt, and the chain itself. Visually check and clean all accessible parts and visually and physically check the chain tensioner, timing chain guides, the timing chain and the sprockets for signs of wear or damage replacing any suspect parts. You have to manually turn the crankshaft at least two times before engaging the starter to look for tightness-signs that seize has set in. Check that the number 1 piston is at Top Dead Centre (T.D.C.), engage the camshaft notches and bolt the intake camshaft sprocket in place using a new bolt. Place the timing chain in position with the camshaft sprocket mark aligning to the unique colored link next to the crankshaft sprocket and cover the crankshaft sprocket with the timing chain. Bolt the adjustable timing chain guide; exhaust camshaft sprocket; fixed timing chain guide; and the upper timing chain guide; then tighten all bolts to the prescribed torque. Closely turn clockwise the intake and exhaust camshaft bolts while using the wrench to hold the camshafts. Apply on the installation position of the timing chain tensioner in compressed position with a dimensional of 2.83 inch length. Bolt the timing chain oiling nozzle securely in place, wet the access plug with RTV sealant and, once again, rotate the crankshaft to feel the drag. Last but not the least, fit the valve cover and the timing chain cover and then connect the battery again, put oil in the crankcase, replace the oil filter and then start the engine and check for oil leaks.