how do you check the water pump? We started the engine with water running through the bunny ears and no water is running out.
There should be with muffs even if the impeller is bad check the thermostat or drop the foot and check the impeller.
Visually is the only way to check it. The water pump is located at the top of the lower unit. The lower unit has to come off to access the water pump. It's a fairly basic project for an enthusiastic DIYer with basic tools and a service manual. Once the L/U comes off, might as well install a new impeller, given the time effort to drop the L/U, not much sense re-installing a used one. first, remove the cowl and check the tell-tale outlet for a blockage.
if its hooked up on the hose, and it doesnt piss, you replace the pump like you should of already done as part of routine maintence. and since you are behind on maintaining that, you are probably behind on everything else too..... the yamaha guy, if your hose only has 5 psi of water pressure instead of the usual 30-40 psi, that is still 5 psi more then the lake has. running on a hose makes it easier for the pump to move water through the engine. even if your impeller has totally broken into pieces, the hose will still push water through your engine all by itself.
you cant really check the water pump. A lot of times city water is not enough pressure to have it pee the best thing to do is to take it to the lake and back it in the water and test it. Also try to apply pressure to the flush attachment and make sure its sealing correctly. If it wont pump in the lake, then most likely the pump is bad or the pee tube is clogged. take something thin and slide it into the hole and make sure its not clogged
