Once you’ve drained any remaining water from the hoses, you will want to remove all the bolts that hold the water pump to the block, and then carefully remove the pump. Scrape the old gasket off the engine block.
Find your new gasket and gasket sealer. Apply the gasket sealer to one side of the new gasket, then align the holes of the gasket with the water pump, and finally press the new gasket against the pump. Seal the exposed side with more gasket sealer. Put the new water pump into place, replace and hand-tighten the bolts. You can re-use and re-install the old drive belt pulleys and old hoses on the new water pump (provided neither is damaged). Don’t forget to check to see if the Yamalube 2M needs topping off!