[cfelton]

Yep, its cooked! I did almost the same thing a few years ago. I was working on the 170 merc, setting the timing and carb adjustments and had the hose kinked while I made some changes and forgot to unkink it and fried my water pump. You probley need to change the whole waterpump( top cover, impeller and lower half housing). It only takes about 20 seconds to melt a dry impeller and it usually warps the top and bottom pump housing. Sorry! Just drop the lower unit, disassemble the complete pump down to the bottom of the case and replace all gaskets and lower pump housing. Then stick the impeller key to the shaft. Take the impeller and turn it lefthanded into the top housing and slide down onto the shaft. Be sure the key stays in place! Bolt it all back up and you're good ta go. It really easy. The kit usually cost about 46 bucks and about 20.00 for the bottom housing. Take my word for it, REPLACE THE LOWER HOUSING!! Good luck. A manual really helps out alot.