Importance of Valve Lash Adjustment Yanmar Marine 6LY2A-STP 440HP

You'll see that the intake lash is non existent. It's supposed to be .01mm (.004) on the intake and .05mm (.020) on the exhaust. All the intakes had no clearence and the exhaust just needed minimal adjustment. It's a good practice to perform this periodically depending on how how hard the engine is used. This engine belongs in a 30' Island Hopper fishing vessel.