A stator is basically a generator on earlier model outboards, or an alternator on later models. The purpose of the stator is to supply the energy needed to operate the ignition system on an outboard boat motor. It also contains charge coils which provides a charge current for the batteries.
How to test a boat stator?
Original Factory Mercury Marine Stators
- Engine fails to run and has no spark.
- Engine is hard to start especially after sitting from a run.
- Engine is low on power or has a "miss".
- Engine stalls frequently.
- Engine does not recharge the vessel's battery (s).
- Vessel's battery (s) keep going dead or have too low of voltage.
What are some symptoms of a bad stator?
- Hard starting: Hard starting when cold or won’t start when cold
- Hard Starting: It starts good when cold but starts hard after it has been ridden and it’s warm or won’t start at all when warm.
- After it warmed up it won’t start but if it sits for an hour it’ll start again
- No spark. ...
What is a stator on a boat motor?
What is the best metal to use for the anode?
- Zinc is the traditional anode material because in the old days it was relatively easy to obtain.
- Aluminum anodes are rapidly replacing zinc for use on ALL hull materials.
- Magnesium anodes are the most active, and are the only anodes that work well in the low conductivity of fresh water.
What does the stator do on an outboard motor?
A stator is basically a generator on earlier model outboards, or an alternator on later models. The purpose of the stator is to supply the energy needed to operate the ignition system on an outboard boat motor. It also contains charge coils which provides a charge current for the batteries.
What are the symptoms of a bad stator on an outboard?
A faulty or failing stator can cause one or more symptoms.Engine fails to run and has no spark.Engine is hard to start especially after sitting from a run.Engine is low on power or has a "miss".Engine stalls frequently.Engine does not recharge the vessel's battery(s).More items...
Does the stator on a boat motor charge the battery?
So, it begs the question. Do Outboards Have Alternators & Do They Charge Batteries? Yes. Almost all outboards that have electric start and that were built in the last 20 years, will have either an alternator or a stater that charges the battery when the engine is running.
How do you test a boat stator?
1:075:49How to Test a Stator on an Outboard Motor - YouTubeYouTubeStart of suggested clipEnd of suggested clipThat's coil one two and three or y one y two y three and what we're gonna do is take a resistanceMoreThat's coil one two and three or y one y two y three and what we're gonna do is take a resistance measurement. From y one to two two to three and then three back to one.
How do I know if my stator is bad?
The most obvious symptoms of a bad motorcycle stator include no spark, weak spark, or intermittent spark (also known as misfiring). Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced.
Why is my marine battery not holding a charge?
This is because the engine's charging system is not operating properly. Or you have not run the engine in so long that the electronics on the boat. Have drained the battery down to nothing and now it's dead. Both of these scenarios happen a little more often than you would think.
How do I know if my boat motor is charging the battery?
Put the multi-meter on Volts scale and look for 13.5 to 14.5v DC as indication it's charging. Anything around 12.8v or less means it's not getting charge. If it is below 12v with the engines off it may take a bit to climb above 12.8, but if it's climbing with the engines on, it's charging.
Will outboard run without battery?
Most electronic fuel injected outboards (including my Yamaha F225, and former F115) will not run without a battery connection (in fact, they won't run on a highly discharded battery).
What does a stator do?
The stator is the coil of wire housed inside the engine case. A magnet on a shaft spins within the stator, creating alternating current (AC). That current travels along fairly heavy gauge wire through the case and into the rectifier/regulator which converts it to DC power, and at a consistent output.
How do you remove a stator from a Mercury outboard?
1:468:52Mercury Outboards: Stator Install & Testing - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis this impact wrench just to take it off and then i got to pull it for the bottle right here. SoMoreThis this impact wrench just to take it off and then i got to pull it for the bottle right here. So yeah yeah i think that would cause a problem. All right now i'm gonna.
How much does a stator cost?
The Stator is priced at $3,995, though you'll only need to put down $250 to reserve your own Stator. Just try not to think about how that same $250 deposit could buy you an entire Amazon electric scooter.
What causes a stator to fail?
When a stator fails, it is largely due to the degradation or aging of its insulation through external occurrences and materials being introduced into its system.
Will a bad stator drain a battery?
When a stator has gone bad, that means the motorcycle is running off of battery power alone which will quickly drain it. Batteries were not made to power the bike while it's running, only mainly to get it started.
What Sign You Should Look For To Detect Bad Stator?
Bad Stator symptoms may vary based on the engine or motor type and sometimes become hard to figure out.
What Are The Symptoms Of a Bad Stator On Outboard?
The symptoms of the bad stator are usually similar to the below-mentioned and explained indications:
How Should You React If You Detect A Bad Stator?
If you detect any of the above-mentioned symptoms, remember to use these 5 easy steps to fix the problem: –
Are Replacing Bad Outboard Stator Typically Expensive?
Generally, replacing an old outboard stator with a new one is not expensive and but the replacement cost varies depending on your engine type and how difficult to reach the stator on your engine.
How Often Should You Replace Bad Stator?
The general rule of thumb is to run a test whenever you see an obvious sign or symptom of a bad stator or when you have already checked other parts such as spark plug, trigger, or reed valves for possible engine troubling issues.
The Verdict
The Outboard Stators are the powerhouse of the ignition system because they furnish voltage to switch box or CDM’s and charge the vessel’s batteries.
What is a stator on an outboard?
A stator is also the component that creates the charging power for your boat’s batteries. If the stator fails, then you won’t be charging your boat’s batteries while you are running! We’d recommend reading this article here on How Outboards Charge The Boats Batteries By Either A Stator or An Alternator.
What is a stator in an engine?
A stator is a component on an engine that is attached under the flywheel of the engine. The engine’s flywheel has magnets attached to the inside of it, that spin around the stator. The stator is made up of windings that produce alternating current electricity. As the magnets on the flywheel spin around the windings when the engine is running.
Why does a stator go bad?
They get old, they get hot, they break down, and they just flat out go bad! If the windings get corroded by a dirty engine, they can fry themselves. Or short out. So a dirty engine can cause a stator to go bad. As well as running too hot.
How many cylinders does an outboard have?
Smaller outboards that only have one, or two cylinders. It will not even start and run if the stator has failed! Whereas larger engines, that have 4, 6, or 8 cylinders. Will use a stator that has different parts to it. Some stators will be broken down into two, three, four, or even six halves!
Why do you need a voltage adapter for a stator?
Because there is also a voltage reading that can be performed to see what kind of power the stator produces. But you will need to have a digital voltage adapter to test this to keep the fuses in your meter from blowing. So be sure to test your engine’s stator based on the service manual specs and tests!
How to read ohms on a stator?
You can set the meter to read ohms or resistance. Then connect the negative meter lead to any engine ground that is on the block. And take the positive meter lead and check for a short to ground at each and every wire that is coming out of the stator.
Can an outboard run with a bad stator?
Yes, certain outboards will run with a bad stator, but not very well. No, other smaller outboards will not run with a bad stator. The stator produces the electricity that the engine uses to operate the ignition system to run the engine. There are many different factors and variables to this question! Here are all of the things that you need ...
Outboard Stator Static Test - Engine Off
Remove the cowling of the outboard to begin a static or resting test. Using a digital multimeter, you’ll be measuring resistance in ohms across the three coils that comprise the stator.
Outboard Stator Live Test - Engine On
The more accurate stator test to do is a live test, in which you start the motor and then read the AC voltage from phase to phase (Y1,Y2, Y3). For this test, place the motor in a test water tank, then crank it up and take measurements on the multimeter’s AC setting.
What is an outboard stator?
Your outboard stator is the "powerhouse" of your outboards ignition system. Most Mercury Outboard Stators perform two important functions. 1. They provide voltage to your switchbox or CDM's. 2. They charge your vessel's battery (s). A faulty or failing stator can cause one or more symptoms. 1.
What are the symptoms of a faulty stator?
1. Engine fails to run and has no spark. 2. Engine is hard to start especially after sitting from a run. 3. Engine is low on power or has a "miss". 4. Engine stalls frequently.
Why does my Mercury Marine switchbox fail?
A bad stator can cause a switchbox to fail. Mercury Marine recommends that the switchbox (s) be replaced in the event of a stator failure. This is because a bad stator can weaken or ruin a good switchbox. It is often the case that the old switchbox (s) fail shortly after a new stator has been installed.
How does a stator work?
Stator generates electricity which is stored in a large capacitor in the switchbox. The trigger sends a signal to dump that charge into the ignition coil. If you have multiple coils, you have ADI Ignition.
What is the flywheel on a stator?
As the flywheel rotates, the permanent magnets passs the capacitor charging coils of the stator producting AC voltage. The AC voltage is conducted to the switchbox where it is rectified and stored in a capacitor. The trigger assembly (also mounted under the flywheel) has coils.
