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Apply a thin film of grease inside the bore of the damper and install it. Do not make the mistake of trying to use the crank bolt to force the damper over the snout of the crankshaft. A damper installer like the one you see here is the only reliable way to install a damper on a crankshaft without damaging anything. This, by the way, is a small race-only damper from Professional Products. Its lighter weight, compared to a stock unit, should help this engine spin up faster.