Outboard water pumps aren’t complicated. It is located just above the lower gear case assembly, making it easy to service. Inside the pump housing, there is a rubber impeller that is keyed to the driveshaft. As water enters into the lower gear case via the inlets on the side of the lower unit, the driveshaft will turn the … See more The most obvious way to tell if the outboard water pump is failing is to watch for the engine to overheat. However, this problem can be caused by a number of issues, which is why it’s vital to test for a bad outboard water … See more In many cases, the water pump failure is actually a result of a bad impeller. What is the impeller? The impellers pump cold water into the engine, so it cools down. The impeller is a … See more On many outboards, you can simply put on the muffs and start the engine. You should see a steady stream of water coming out of the holes on the … See more Outboard motors don’t need a complicated system to push water through the engine’s cooling passages. The simple design ensures that the temperature is always maintained and the … See more Web3. Water pump is ready to be removed, using a fitting socket on the four mounting bolts. Notice that the gearcase is also being drained of old lubricant while the author completes …

Yamaha outboard overheating solved - YouTube

WebHead Gaskets. A blown head gasket in an inboard-outboard engine will cause water to enter the combustion chamber and be discharged out of the exhaust. The loss of cooling water that would normally circulate … WebJan 31, 2024 · Overheating can also be caused by a worn or damaged water pump impeller. If you don’t recall the last time you replaced the impeller for your engine or other accessories, consider adding this task to your list of … magic open house promo

Why is My Outboard Overheating? Boats.net

WebSep 24, 2024 · Any water restriction in your Yamaha Outboard can cause overheating. Another reason why your Yamaha Outboard will overheat is the thermostat is not opening … WebRemove the bolts holding the water pump in place, using an adjustable wrench. Pull the pump cover up and over the top of the driveshaft. Grab the impeller and pull it off the … WebJun 7, 2024 · With only a very few exceptions (such as Honda’s 2.3hp model) outboard engines are water-cooled. An impeller pump at the bottom of the leg above the gearbox pumps water up to the motor, which then … magicool sunburn spray