ARC Adjustable Hub FlywheelInstruction Sheet for PVL IgnitionsPrior to Installation, it is recommended to "LAP" the crankshaft and flywheel together with light to medium grit lapping compound to ensure that the maximum surface contact between the flywheel hub and the crankshaft is achieved. Lapping should not be done for more than 30-45 seconds and be sure to clean both tapers very well before installation. Once the starter nut is prope
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