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1. Remove front timing case cover. Remove camshaft button and camshaft button spring.
2. Inspect timing chain and sprockets for wear. Timing chain in and out movement should not exceed 1" (25.4 mm). Replace if necessary.
3. Rotate crankshaft and align timing marks on camshaft and crankshaft sprockets. Remove timing chain damper assembly.
4. Remove camshaft sprocket bolts. Remove camshaft sprocket and timing chain.
the magnet goes in through the back of the cam gear.