Even though Yamaha outboards are one of the most reliable engines available on the market, you will often run into issues with this unit if you don’t follow a monthly maintenance schedule. So, make sure to go through the maintenance routine and keep your unit clean if you want to get extended performance out of the outboard. Recently many users have pointed out issues with their Yamaha outboard not pumping water. It can be impossible to get the desired efficiency from your unit when you’re running into pumping issues. So, let’s go through a few troubleshooting methods that can help you get around these motor problems.
Yamaha Outboard Not Pumping Water
1. Unclog Water Inlet
One of the most common problems that can lead to this issue with your outboard motor is a clogged water inlet. Depending upon the condition of the water, it is not too rare for weeds and other dirt to get stuck in the water inlet. So, you will have to start the inspection by checking the water inlet, and it will give you an accurate picture of the issue.
Most often than not, you will find that there is some debris blocking the water inlet, and no water can get into your motor. Luckily, this issue is quite easy to fix, and you need to fish out all the debris particles in the inlet tube, and your issue will be fixed.
Just make sure to turn off the power before inspecting the water inlet completely. Once the power is removed, you can poke a wire into the inlet and try to remove the extra debris. That way, you will be able to clean the grates completely without any issues. After that, you can just start the engine again and check if your outboard will start pumping water.
2. Replace Pump Impeller
As long as you’re sure that there is nothing clogged in the water inlet supply, the issue with the outboard not pumping water can be isolated to a broken impeller or a clogged outlet. So, you should move on to the inspection of the pump impeller after cleaning up the water inlet, and it will help you narrow down on the issue.
In most cases, you will find that the impeller disc can break out of shape and disrupt the flow of water. If you’ve had the unit for a long time, then there is a good chance you’re dealing with similar issues. Luckily, all you will have to do to get around this problem is installing an impeller replacement.
The best thing here is that the impeller disc is quite affordable, and you won’t have to hire an expert to install the impeller. You can easily make the replacement yourself, and it won’t take you more than a few minutes to overcome the impeller problems. So, just go to your nearest hardware store or contract the dealer to secure a compatible impeller replacement for your unit. After that, just replace the old impeller with the new one and your problems will be fixed.
3. Clean Outlet
After fixing the impeller of your water pump, you need to look towards fixing the water outlet if you’re still stuck in the pumping issues. To clean the water outlet tube, you will just need to grab a piece of thin wire and put it inside the water outlet. Now, you should move it around in a circular motion gently to dislodge any debris particles stuck in the outlet.
After you’ve cleaned out the water outlet, try starting the motor again and check if you’re still struggling with the pumping problems. Most often than not, the issue will be fixed at this stage, and you won’t have to concern yourself with the water pump for a long time. So, make sure to fix the inlet, outlet, and impeller on your water pump if you’re running into issues.
With that said, if you’re unable to get ahead of the problem, then you should call your dealer for professional support. As long as you have a warranty, you should avoid replacing the unit yourself and always call the dealer first. Otherwise, you will end up voiding the warranty, and you won’t get anywhere with the water pump issues. Hopefully, this information will help you get the desired performance from your unit.