For your yamaha outboard motor to function well, the carburetor has to be in a good working condition.
That is why you have to detect yamaha outboard carburetor problems early and solve them.
Without that, your outboard motor will lag in performance.
Some of the yamaha outboard motor carburetor issues include clogged carburetor, loose carburetor drain screw, stuck float, damaged carburetor bowl and loose carburetor bowl screw.
With any of these problems, your yamaha carburetor will have problems and lag in performance.
When you discover any of these issues, you have to make sure that you fix it speedily.
This will help your outboard motor to function well.
Common Yamaha Outboard Motor Carburetor Problems
When a carburetor is faulty, one of the ways in which this will show is in leakage.
An outboard motor carburetor will begin to leak when it is malfunctioning.
Due to this, fuel will be dropping from the bottom of the carburetor.
This leads to wastage of fuel and should be fixed when it occurs.
Apart from wasting fuel, a leaking carburetor increases the cost of running an outboard motor due to the volume of fuel lost through leakage.
2) Release Of Excess Fuel From The Carburetor
For an outboard motor to function well, fuel has to be released into the combustion chamber at a controlled rate.
This will help ensure that the outboard motor functions well.
But in some cases, this might not be possible due to a faulty carburetor.
When an outboard motor carburetor is faulty, one of the problems it will encounter is the release of excess fuel into the combustion chamber.
When this happens, it leads to a flooded engine when you want to start the outboard motor.
When the outboard motor is running, excess release of fuel into the combustion chamber will lead to too much release of smoke from the exhaust system.
This is due to the incomplete combustion that will occur due to excess fuel in the combustion chamber.
3) No Release Of Fuel From The Carburetor
Another common carburetor problem in a yamaha outboard motor has to do with no release of fuel to the combustion chamber.
This starves the combustion chamber of fuel and leads to the stalling of the outboard motor when it is running.
This is usually due to clogged carburetor or a float needle stuck in the closed position.
4)Incompatible Carburetor Rebuild parts
When a carburetor part is damaged, the normal thing for some people is to rebuild the carburetor.
Ths has to do with getting a replacement of the bad part.
In doing this, you have to make sure that you make purchase of the carburetor rebuilding part from a reliable seller.
This will ensure that the rebuild kit is of a right quality and dimension.
If they are not, then your yamaha outboard carburetor will have a problem.
Causes Of Yamaha Outboard Carburetor Problems And Solutions
1)Stuck Carburetor Float
In a carburetor, there are a lot of parts.
One of these parts or components is the carburetor float needle.
Its function is to open and close the fuel inlet.
This is done depending on the volume of fuel in the carburetor bowl.
When the fuel in the carburetor bowl is much, the float will rise up and shut the fuel inlet.
This helps in preventing a flooded engine issue or having too much fuel in the combustion chamber,
When the volume of fuel in the carburetor bowl is less, the carburetor float goes down.
This opens the fuel inlet of the carburetor to allow fuel to flow into the carburetor.
With this, the carburetor is fed with the right volume of fuel always.
This helps the outboard motor combustion chamber to receive an optimal volume of fuel.
But if the carburetor float is stuck, then there will be a problem in the outboard motor carburetor.
This problem depends on the condition at which the carburetor float is stuck.
If the carburetor float is stuck in the open position, fuel will keep flowing into the carburetor without being regulated.
This will dump excess fuel into the carburetor and combustion chamber.
Due to this, the carburetor will leak and also have a flooded engine with smokes coming out of the exhaust system due to incomplete combustion.
If the carburetor float is stuck in the closed position, then there will be issues too.
In this case, fuel will not flow into the carburetor as the inlet valve will be closed.
This will lead to fuel starvetion in the carburetor and combustion chamber.
As a result of this, the outboard motor will not start.
If it is running, it will stall due to no fuel in the combustion chamber.
a)Free Stuck Carburetor
If your outboard motor is performing poorly, you have to troubleshoot.
One of the places to look into is the carburetor.
If you discover that the carburetor is stuck, then you have to make sure that you free the carburetor float.
This will help your outboard motor to function well again.
But if you discover that the carburetor is in a very bad condition, you have to make sure that you replace it with a new one.
2) Clogged Carburetor
Another yamaha outboard carburetor problem has to do with a clogged carburetor.
This is usually a very serious issue as it will affect the performance of the outboard motor negatively.
When a carburetor is clogged, the debris inside the carburetor prevents the ease of fuel inflow and outflow.
3) Loose Carburetor Drain Screw
At the bottom of a carburetor, there is a drain screw.
Its function is to drain fuel from the carburetor.
It can cause problems to the carburetor if it malfunctions.
One of the ways in which this can heppen is when the drain screw in the carburetor is loose.
This will lead to the loss of fuel from the carburetor.
To fix it, you have to make sure that you tighten this screw well.
With this, the unintended release of fuel through a loose carburetor drain screw will stop.
4) Damaged Carburetor Bowl
The lower part of the carburetor is the carburetor bowl.
This part stores fuel before it is released from the carburetor.
If it has faults like a crack then the carburetor will develop issues.
One of these issues is that the carburetor will begin to leak fuel.
To fix this, you have to make sure that you replace it with a good one.
5) Bad Fuel
When you are using your outboard motor, you have to make sure that you use a good fuel.
A good fuel will be free from dissolved particles that will block the carburetor.
Using a good fuel will help your carburetor to function well.
This will also lead to the optimal performance of the outboard motor.
6) Incompatible Carburetor Rebuild Component
When a part of the carburetor is bad, it is always good to fix it if the damage is not too much to demand for a complete replacement.
Due to this, a carburetor rebuild is done.
This will involve the change of some bad components to a good one.
But if you use a bad rebuild component, then the carburetor will keep having issues.
To avoid this, you have to make sure that you use a good rebuild component.
If the carburetor is extremely damaged, you have to consider getting a new replacement.
7) Loose Carburetor Bowl Screw
When you discover that the carburetor in your yamaha outboard motor is leaking, you have to troubleshoot.
This will help you discover the faulty part.
If at the end of the troubleshooting you discover that the bowl screw is loose, you have to fix it,.
This is usually an easy fix that will require you to tighten the bowl screw.
With this, the leaksge from the carburetor will cease.
This is one of the ways in which you can fix yamaha outboard carburetor problems when they occur.