another dumb question 85 thundercraft 140 hp merc io
trying to winterize. how many drain plugs, and where are they located. i bought seloc book but it doesnt show there locations?
One in the engine block, one in the bottom of the manifold and one in the exhaust elbow. I would also pull the big hose off the water pump/thermostat housing and tip the water out of there too... Poke the holes with a length of wire to clear the crap out....