Re: mercury3.6
Sometimes a pipecleaner inserted into the discharge tube will unstop it.They get plugged-up easily.<br /><br />The pump is located in the lower unit. It must be removed to R&R the impeller. If this engine is over 2 years old, it is due for a new impeller. Also, there should be a thermostat under a cover on the engine. Some of these mercs have the tstat housing clipped in place (like a master cylinder cover on a car).<br />The impeller costs about 15buks,the tstat about 9.<br />The job is kinda hard for the first-time wrench, but not impossable by any means,with the right tools. I strongly advise the purchase of a shop manual,as it will pay for itself. The job will take about 3hours the first time, then 1 any time after that (the old learning curve).<br />When you have the lower unit off, it's allways a good time to check the lower unit lube and seal condition...Kill two bird with one rock,sort of.<br />Look for signs of water,or chunks of metal in the lube. Refill it with new outboard gear lube, and use new gaskets on the VENT/FILL screws.
