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The function of a rocker arm is to control a valve in an engine. The rocker arm is a lever that rocks.
20 foot pounds
Remove the valve cover. The rocker arm assembly can be removed by loosening the rocker arm screws. Each rocker arm will have a screw.
Each rocker arm has a bushing beneath the rocker arm screw. When the bushing is worn out, the rocker arm will continue to loosen up.