We replaced the water pump on our Evinrude 25 hp outboard motor with a new one, but it is not working.
It may look easy in the book but there are a few things that can go out. Such as the key/roll pin that drives the impeller can slip out on assembly. Water tube out of hole or damaged OR pieces of old impeller in it depending on why you needed to replace it. There are more but if you are not a trained tech it may be time to find one.
have you changed the impeller inside the lower unit.
There is copper pipe to redirect water up into the engine.
When you replaced the impeller make the copper pipe is insert onto the engine.
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