I've layed up a Yamaha 8 (salt water) for 7 months. After doing a cautionary service (lubes, water pump, compression test, idle adjust) I noticed that no water was coming out of the drain hole. Thinking I put the impeller in back to front (should still work, but not for as long as the right way...) no, it was correct.<br /><br />I regularly have to clear the little nipple on the underside, as salt deposits tend to block it. I suspected that maybe I have a big salt blockage in the head somewhere...<br /><br />I took a straw to the tube that leads to the head, and blew. Nothing coming out the nipple at all. In fact no water came out the tube when I pulled the lower unit off. Blowing hard gave a bit of a gurgle from where the exhaust comes into the shaft casing, but no luck elsewhere.<br /><br />Does anyone know how I can clear this blockage in the head? It's on a yacht, so a little hard to access the luxuries of the home workshop...
