Straight-up tips & tricks to diagnose and remedy Harley-Davidson flathead, Knucklehead, Panhead, Shovelhead starting issues. Step-by-step valve adjustment, ignition timing, magneto spark issues (with great mag test tips), Linkert carb adjustment over on my YouTube channel. Link in bio. #harleydavidson #harley #harleysofinstagram #chopper #harleylife #motorcycle #motorcyclesofinstagram #moto #motorcyclelife #vintage #knucklehead #shovelhead #flh #panhead #flathead #engineporn #youtube #americanst