MerCruiser Port Cylinder Head Removal Process Port Cylinder Head Removal – Exhaust Manifold We will start the MerCruiser Port Cylinder Head Removal by removing the wiring to to “Lube” bottle. Much to my dismay, the label came off the wiring! Maybe its because the boat sank in saltwater? Secondly, we will remove the exhaust manifold bolts and coolant connection on the manifold. there are four long 14 mm bolts that…