RD 12A Maintenancewc_tx001557gb.fm 595.7 Spark PlugSee Graphic: wc_gr000028Clean or replace the spark plug as needed to ensure proper operation.Refer to the engine owner’s manual.The exhaust manifold becomes very hot during operation and remainshot for a while after stopping the engine. Do not touch the exhaustmanifold while it is hot.Note: Refer to section Technical Data for the recommended sparkplug type and the electrode gap setting.5.7.1 Remove the spark plug and inspect it.5.7.2 Replace the spark plug if the insulator is cracked or chipped.5.7.3 Clean the spark plug electrodes with a wire brush.5.7.4 Set the electrode gap (a).5.7.5 Tighten the spark plug securely.NOTICE: A loose spark plug can become very hot and may causeengine damage.WARNING
