Getting an evinrude 25 hp Impeller replacement is very important if you discover that the impeller is faulty.
This is one of the reasons why evinrude 25 hp outboard motor is not pumping water.
To achieve a good performance from your outboard motor, the components have to perform well.
One of these components that have to perform well is the cooling system.
In the case of an evinrude 25 hp, the cooling system is the water pump.
This consists of the impeller and other components like the water intake.
But when you discover that the impeller is bad, you have to replace it.
This can be made possible by changing the faulty impeller to a good one.
This guide will help you perform the change properly
Steps In Evinrude 25 hp Impeller Replacement
Step 1: Remove Lower Unit From Outboard
Before you can replace a faulty impeller to a good one, you have to locate where it is.
In an evinrude 25 hp outboard motor, the impeller is located in the lower unit.
To locate it, you have to detach the lower unit of the outboard motor from the outboard motor.
This can be done by remove the screws that hold the outboard motor to the lower unit.
When the screws are off, you have to detach the lower unit.
This will give access to the impeller housing where the impeller is located.
Step 2: Remove Screw From Impeller Housing
After detaching the lower unit from the outboard motor, you will see the impeller housing.
The impeller housing is very close to the drive shaft of the outboard motor.
This is where the impeller of the evinrude outboard motor is housed.
This is made possible with the use of screws that secure the impeller housing to the lower unit.
To have access to the impeller, you have to remove the impeller housing.
This is done by removing the screws that hold the impeller housing to the lower unit.
By removing these screws, the impeller housing will be free.
Once you remove the impeller housing, you will easily locate the impeller.
Step 3: Remove Faulty Impeller
When you want to replace evinrude 25 hp impeller with a new one, you have to remove the faulty one.
Once you have removed the impeller housing, the impeller of the evinrude outboard motor will be revealed.
With this, you have to remove the faulty impeller from the outboard motor.
In doing this, you have to be careful.
This is to avoid damage to the driveshaft of the outboard motor.
You also have to make sure that you do not lose the impeller pin.
This pin helps to secure the impeller to the driveshaft securely.
With a secure contact of the impeller to the driveshaft, the impeller moves well when the driveshaft is rotating.
That is why you have to make sure that you do not lose this pin.
This is because it will be used when installing the new impeller.
Step 4: Install New Impeller
After you have removed the faulty impeller from the outboard motor lower unit, you have to fix another.
This is done by installing a new impeller that is good.
But in installing a new impeller, you have to make sure that it is compatible with the evinrude 25 hp outboard motor.
This will help your impeller to perform well when the outboard motor is running by pumping water to help regulate outboard motor temperature.
When installing the new impeller, you have to make sure that you install the impeller pin too.
This is what will give the impeller a firm contact with the driveshaft.
With this, the impeller will move well when the driveshaft is rotating.
But if the impeller pin is not present, the contact of the impeller with the driveshaft will be loose.
This will affect the performance of the impeller in pumping water efficiently.
To avoid this, you have to make sure that you secure the impeller well to the driveshaft with the use of the pin.
Step 5: Install Impeller Housing
When replacing evinrude 25 hp impeller, you have to install the impeller housing after installing the new impeller.
The impeller is housed in an impeller housing.
This is what helps in building pressure for the impeller to easily circulate water and regulate the outboard motor temperature.
After you have installed the impeller, you have to make sure that you install the impeller housing.
After putting on the impeller housing, you have to make sure that you secure the impeller housing well.
This is done with the help of the screws that secures the impeller housing to the lower unit.
With this, the impeller will be able to function well.
Step 6: Install Lower Unit
After you have replaced the faulty impeller with a new well and securing the impeller housing to the lower unit, you have to install the lower unit.
In installing the lower unit, it has to be done with great caution.
This is to help avoid damage to the driveshaft.
If the lower unit is wrongly installed, damage can occur to the driveshaft.
This can cause the driveshaft to bend.
Due to this, vibrations will occur when you use the outboard motor.
To avoid this, you have to make sure that you install the lower unit carefully.
After installing the lower unit to the outboard motor, you have to secure its position with screws.
This will help the drive shaft to transmit power well to the propeller well.
Step 7: Test Outboard Impeller
After you have installed the lower unit, you have to make sure that the newly installed impeller is working well.
To do this, you have to make sure that you test the outboard motor.
This is done by running the outboard motor.
In doing so, the newly installed impeller has to be able to pump water well and circulate it through the outboard motor.
This will be seen when the outboard motor releases water from the outlet valve.
Some people call it peeing of the outboard motor.
With this, you are sure that the impeller is well installed and that it is functioning well.
Precautions When Replacing Evinrude 25 hp Impeller
1)Use Compatible Components
When you are changing a faulty impeller to a good one, you have to make sure that the new impeller is compatible with the outboard motor.
Without a proper compatibility, the newly installed impeller will not function well.
That is why you have to make sure that you use a compatible replacement always.
2) Install Pin To Secure Impeller To Driveshaft
When carrying out replacement of evinrude 25 hp impeller, you have to be very careful.
Apart from being careful, the replacement process has to be done by a well experienced technician.
This will help avoid damage to components like the driveshaft.
In installing the new impeller, you have to make sure that it is well secured to the driveshaft.
This is by making sure that the impeller pin is installed too.
Without the pin, the impeller will have a loose contact with the driveshaft.
This will affect the performance of the impeller negatively when the outboard motor is running.
In such a situation, what will happen is that the impeller will not circulate water well.
This will affect the cooling of the outboard motor.
To avoid this, make sure that the pin is well positioned when installing the new impeller.
3) Keep Lower Unit Safe After Detaching From Outboard Motor
After you detach the lower unit from the outboard motor, you have to position it well.
This will help prevent it from falling which can cause damage to the driveshaft.
When an outboard lower unit falls, the driveshaft can get bent.
Apart from the driveshaft getting bent, dirt can enter the lower unit which is very bad.
That is why you have to position the lower unit well after detaching it from the outboard motor.
4) Install Lower Unit Correctly
After you have installed the new impeller and the impeller housing, you have to connect the lower unit back to the outboard motor.
In this process, you have to be careful to avoid issues.
Install the lower unit gently to avoid the driveshaft from bending.
This will help make the evinrude 25 hp impeller replacement process a success.
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