How to Clean Outboard Water Passages | Maintenance Guide 2023

Last Updated on August 16, 2023 by Jisan

To clean outboard water passages, remove the lower unit and use a garden hose to flush out the crud. If the blockage is severe, you may need to use a small brush or pick to remove it. Be sure to reinstall the lower unit before running the engine.

  • Remove the outboard’s spark plugs and spray fogging oil into each cylinder
  • Turn the outboard over several times to distribute the oil
  • Replace the plugs and reconnect all wiring
  • Drain the gearcase lube into a clean container and inspect it for water contamination
  • If there is water in the lube, have a mechanic check your outboard for cracks in the gearcase or other damage
  • Refill the gearcase with fresh lube, following the manufacturer’s specifications carefully to avoid overfilling

Yamaha Outboard Clogged Cooling System

If you have a Yamaha outboard, you may eventually run into the problem of a clogged cooling system. This can happen for a variety of reasons, but most often it’s due to marine growth or debris getting into the water intake. If this happens, it’s important to take care of the problem as soon as possible, as a clogged cooling system can lead to engine damage.

There are a few signs that you may have a clog in your Yamaha outboard’s cooling system. The first is if the engine overheats quickly or runs hot even when idling. Another sign is if there is white smoke coming from the exhaust or if the engine is running rough.

Finally, if you notice an increase in fuel consumption, this could also be due to a clogged cooling system. If you think you may have a clog in your Yamaha outboard’s cooling system, the first step is to check the water intake screen. If this is clear, then the next step is to flush out the entire cooling system with fresh water.

This can be done by disconnecting the hose that goes from the water pump to the cylinder head and running fresh water through it until it comes out clean. Once this is done, reassemble everything and start up your engine to make sure everything is working properly again.

How to Remove Salt Build Up in Outboard Motor

If you have an outboard motor, you know that one of the most important maintenance tasks is to keep it free of salt build up. Salt build up can cause serious problems with your motor, including corrosion and electrical issues. Fortunately, there are a few simple steps you can take to remove salt build up from your outboard motor.

One of the best ways to remove salt build up is to use a garden hose with a spray attachment. Simply spray down your outboard motor with fresh water, making sure to get all of the nooks and crannies. You may also want to use a soft brush to help loosen any stubborn salt deposits.

Once you’ve sprayed down your outboard motor, it’s important to rinse it off completely with fresh water. If possible, allow your motor to air dry in the sun for several hours before using it again. This will help prevent further salt build up.

With just a little bit of effort, you can keep your outboard motor free of salt build up and running smoothly for years to come!

Outboard Motor Cooling System Clogged

If you have an outboard motor, it’s important to keep the cooling system clean and free of debris. A clogged cooling system can cause the engine to overheat, which can lead to serious damage. There are two main types of outboard motor cooling systems: closed and open.

Closed systems are sealed and don’t require any maintenance other than occasionally checking the fluid level. Open systems, on the other hand, need to be regularly cleaned to prevent debris from clogging the water pump or intake screens. To clean an open system, start by removing the cowling (engine cover) and locating the water pump.

The water pump is usually located at the front of the engine, near where the propeller shaft enters the housing. Once you’ve found the water pump, use a garden hose to flush any debris from around it. Be sure to also remove any debris from the intake screens (located just behind the water pump).

If your outboard has an internal cooling system (closed), you’ll need to take it to a certified dealer or service center for periodic maintenance.

How to Remove Scale from Outboard Motor

If you have an outboard motor with a scale build-up, there are several ways to remove it. One way is to use a putty knife or other sharp object to scrape the scale away. Another way is to use a vinegar and water solution.

Simply mix equal parts vinegar and water in a bucket and submerge the affected area of the outboard motor in the solution. Allow it to soak for at least 30 minutes, then use a brush to scrub away the scale. If the build-up is particularly bad, you may need to repeat this process several times.

You can also buy commercial cleaners specifically designed for removing scale from outboard motors. Follow the instructions on the package carefully and always wear gloves and eye protection when using these products.

Best Way to Flush Outboard Motor

It is important to know how to properly flush an outboard motor after using it in salt water. This will help to prevent corrosion and keep the motor running smoothly. There are a few steps that should be followed when flushing an outboard motor.

First, the engine should be turned off and allowed to cool down. Next, the lower unit should be drained of any water that may have accumulated. The prop should then be removed so that all of the salt can be flushed out.

Once the prop has been removed, all of the external parts of the motor should be rinsed with fresh water. The engine can then be started and run for a few minutes in order to flush out any remaining saltwater. Finally, all of the moving parts should be lubricated before storing the motor away.

How to Clean Outboard Water Passages
How to Clean Outboard Water Passages | Maintenance Guide 2023 2


How Do You Clean the Water Intake on an Outboard Motor?

If you don’t clean the water intake on your outboard motor, it can get clogged with debris and cause the engine to overheat. Here’s how to clean it: 1. Disconnect the kill switch and spark plug wires from the engine.

2. Remove the cotter pin and nut from the propeller shaft. 3. Lift the engine out of the water using a crane or other lifting device. 4. Inspect the water intake for any obstructions, such as seaweed, sand, or shells.

remove these by hand or with a small brush. If there is anything stuck in the impeller blades, use a needle nose pliers to remove it. Be careful not to damage the blades!

5. Put everything back together and test run your engine before putting it back in the water!

Can You Use Clr to Flush Outboard Motor?

No, you cannot use CLR to flush outboard motor. CLR is a caustic cleaner and can damage the seals in your outboard motor.

How Do You Remove Salt Build Up from an Outboard Motor?

Assuming you are referring to salt water build up: It is important to remove salt water build up from an outboard motor as soon as possible after exposure to salt water. Salt water is corrosive and will damage the metal components of the outboard motor if left unchecked.

The first step is to rinse the outboard motor with fresh water. A garden hose can be used for this purpose. Be sure to direct the spray away from any electrical components on the motor.

Next, use a brush or sponge to scrub away any visible salt deposits. Once the majority of the salt has been removed, it is time to flush the engine itself. This can be done by running the engine in a bucket of fresh water for several minutes.

Be careful not to overheat the engine during this process. If there is still salt build up present, it can be removed by soaking the affected parts in a solution of vinegar and water overnight. In the morning, rinse everything off with fresh water and reassemble your outboard motor.

How Do You Remove Calcium Deposits from an Outboard Motor?

If your outboard motor has calcium deposits, you can remove them by following these steps: 1. Fill a bucket with warm water and add some vinegar. 2. Place the outboard motor in the bucket so that the affected areas are submerged in the water.

3. Let it soak for a few hours or overnight. 4. Use a brush to scrub off the calcium deposits. Rinse with clean water and dry completely before using the outboard motor again.

Cleaning outboard water passages


If you have an outboard boat engine, it’s important to clean the water passages regularly. This will help keep your engine running smoothly and prevent corrosion. The best way to clean the water passages is with a small brush and fresh water.

You can also use a hose to flush out any salt or debris that may be stuck in the passages. Be sure to dry the passages completely before putting your boat back in the water.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *