Yamaha outboard motor rectifier problems can occur when you use your outboard motor.
In an outboard motor, electric charge has to be produced.
This helps in generating the charge needed for combustion through the spark plug.
In some outboard motors like the yamaha, the stator helps in producing this charge.
But for the electric charge to be useful, it has to be at a controlled range.
The charge has to be a direct current too.
But the stator produces an AC current.
The rectifier helps to convert the AC from the stator to a DC for use in the boat.
If you have a yamaha outboard rectifier problem, the charge produced will cause harm.
This is because when a rectifier is bad, it will not be able to control the charge output.
In such a case, the rectifier will send out little or excess voltage which will cause damage to the outboard components.
That is why you have to make sure that you replace a rectifier when it gets bad.
Yamaha Outboard Rectifier Problems And How To Fix
1)Rectifier Producing Excess Voltage
One of the roles a rectifier plays in an outboard motor is to convert the type of current that is produced.
This is seen as the rectifier converts the alternating current from the stator or alternator to a direct current.
This helps provide an electric charge for purposes like charging the battery in the boat and also powering the devices in the boat.
But apart from this, the rectifier in an outboard motor performs another task too.
This is in controlling the voltage that is being produced.
The rectifier helps in producing a voltage of about 14.5 volts.
This helps in charging the battery in the boat without damage.
When the right amount of voltage is produced, it also helps in powering the devices in the boat.
But when the rectifier in a boat is bad, there will be a fluctuation in the amount of volts produced.
It can be below 14.5 volts.
The rectifier can also produce a voltage in excess that can pass 14.5 volts.
These occur when the rectifier used in the outboard motor is bad.
This is one of the yamaha outboard rectifier problems that occur when you make use of your outboard motor.
Causes
a)Bad Stator
For the rectifier to function, it has to receive an electric charge from a charge producing source.
This can be a stator or an alternator.
With this charge produced, the rectifier receives it and then converts it for use in the boat.
But if the stator or alternator is bad, then the rectifier will not receive an optimal voltage.
This can cause the rectifier to produce a voltage that is below the needed value.
b) Bad Flywheel
The flywheel in an outboard motor carries a magnet in it.
This helps in the production of an electric charge from the stator when it rotates.
But if the flywheel is bad, then the amount of electric charge produced will be affected.
This will also affect the voltage and current that the rectifier will produce.
c) Bad Rectifier
When a rectifier is producing excess or low voltage, `you have to troubleshoot.
One of the parts to troubleshoot is the rectifier itself.
This is because a faulty rectifier will produce voltage that is too low or in excess.
Solutions
a)Fix Bad Flywheel
If you discover that you are having issues with the voltage produced by your outboard motor, you have to check the parts.
This includes the flywheel.
If you discover that the flywheel is bad, then you have to replace it.
in replacing it, maks sure that you use a good one.
This will help in producing the optimal voltage needed from the outboard motor.
b) Fix Bad Outboard Stator
In an outboard motor, the stator helps in the production of electric charge.
But if the stator is bad then the production of electric charge from the outboard motor will be affected.
This will affect the performance of some of the components of the boat like the rectifier.
That is why you have to make sure that you fix a bad stator.
c) Fix Bad Outboard Rectifier
If you discover that the voltage produced from the rectifier is below standard, you have to check the rectifier for issues.
If you discover that the rectifier is bad, then you have to make sure that you replace it with a good one.
2) Rectifier Not Charging Boat Battery
Another yamaha outboard motor rectifier problems occurs when the battery of the boat is not charged.
For the battery of the boat to charge, it needs to receive the needed voltage.
This voltage is delivered with the help of the rectifier in the outboard motor.
If the rectifier is bad, then the battery in the boat will not be charged.
Causes
a)Bad Rectifier
The stator or alternator in a boat produce an alternating current.
This can not be readily used in the boat.
For the current produced to be usable in the boat, it has to be converted.
This conversion is done with the help of the rectifier in the outboard motor.
The rectifier converts alternating current to a direct current.
This helps in charging the battery in the boat.
But if the rectifier in the outboard motor is bad, then the battery in the boat will not be charged.
b) Bad Battery
When the battery in a boat is not charging, the common place a lot of technicians look at first is the rectifier.
But if you discover that the rectifier is working flawlessly, you have to look at the battery.
A bad battery will have a high internal resistance.
This prevents the battery from charging well when it receives a charge.
When you discover that the battery in your boat is bad, you have to make sure that you change it to a good one.
Solutions
a)Replace Bad Rectifier
If your boat battery is not charging, you have to inspect the rectifier.
If it is bad, then you have to make sure that you replace it with a good one.
b) Replace Bad Battery
When your boat battery is not charging, you have to inspect the battery well.
If you discover that the battery is bad, then you have to make sure that you replace it with a good one.
This will help fix a battery not charging issue in a boat.
c) Fix Bad Stator
The stator in an outboard motor produces the charge used in the outboard motor.
This charge is used in charging the battery in the boat.
It is also used in powering other devices in the boat.
When you discover that the stator in your outboard motor is bad, then you have to make sure that you fix it.
3) Rectifier Getting Burnt
Another yamaha outboard rectifier problem occurs when the rectifier gets burnt.
This is usually caused by extreme heat.
That is why the rectifier should not have a direct surface contact with extremely hot components of the outboard motor.
Causes
a)Poor Quality Rectifier
If you use a poor quality rectifier, then it will easily get damaged.
One of the ways it will sustain damage is through heat.
A poor quality rectifier will get very hot when in use.
This will lead to the destruction of the rectifier.
b) Closeness To Hot Component
If your rectifier is too close to a very hot part of the outboard motor, it will sustain damage.
This damage will show up in a burnt rectifier situation.
c) Use Of Wrong Capacity
In your outboard motor, you have to make sure that you use the correct parts capacity.
This cuts across all the components of the outboard motor including the rectifier.
You cannot use the part of a 2 HP outboard motor to run a 150 HP outboard motor.
This will easily lead to damage.
Solution
a)Use a Rectifier Of Good Quality
If you want to avoid the frequent damage of your outboard rectifier, you have to make sure that you use a good quality rectifier.
This will help avoid frequent damages.
b) Keep Rectifier Away From Extremely Hot Outboard Parts
One of the causes of yahama outboard rectifier problems is heat.
This is when the rectifier is too close to a heat source in the outboard motor.
When this occurs, the rectifier will get damaged by the heat.
To avoid this, you have to make sure that the rectifier is not too close to an heat source in the outboard motor.
c) Use The Right Rectifier Capacity
Even if you use a good rectifier in your outboard motor, it can still suatain damage.
This is always due to a capacity issue.
The capacity of rectifiers are variable.
A large boat will definitely carry a larger rectifier capacity.
This is to enable it produce the needed electric charge without too much strain of the rectifier.
But when you use a small rectifier in a large outboard motor, then the power demand will easily destroy it.
That is why you have to make sure that you use the right capacity of rectifier in your boat all the time.
This will help prevent yamaha outboard rectifier problems that can lead to the damage of other boat components.