Quick Answer: How does a motorcycle stator go bad?

To answer why stators fail, it is because the coating on the windings breaks down, usually because of heat, causing a short which can also burn the fine wire of the winding in two at the short causing an open circuit. The way to prevent failures is to prevent the heat.

What can cause a motorcycle stator to go bad?

There are a few things that may cause a stator to fail. Too heavy of a load when operating accessories (winch,heated grips,headlights, etc). If working several of these items at one time (plowing/pulling/possibly stuck at night) you would overload the system. This could cause either the stator or rectifier to fry.

How do I know if my motorcycle stator is bad?

Insert each probe into a stator socket. You should read around 0.2 to 0.5 ohms. If you show an open circuit with the “Open” or infinity reading or have higher resistance, then the stator is bad and you must replace it. If these tests all produce positive results, then the stator itself is good.

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What causes stator to fail?

Thermal deterioration of insulation in one phase of the stator winding, which can result from unequal voltage between phases due to unbalanced loads on the power source, a poor connection at the motor terminal, or high resistance contact; or thermal deterioration in all phases of the stator winding typically due to …

Can a stator go bad from sitting?

Stators do not go bad from sitting unless the mag housing is full of water.

Will a motorcycle start with a bad stator?

The stator coil generates the power for the spark plug and other accessories on small engines Without a stator there would be no spark at all, meaning the engine won’t run. While a stator is dying, it can produce a weak spark, causing the engine to miss or run poorly. Symptoms are often worsened as the engine warms up.

How much does it cost to replace a motorcycle stator?

” The stator itself is $1100 and the labor to pull engine and replace is usually about $1000. My early 2014 GSW blew the stator, but at least the bike at 35,000 miles and under 3 years old was still under factory warranty.”

Can a stator be repaired?

Stator Replacement

In many cases a new stator is the safest, most cost-effective solution for an electrical system breakdown. Because repairing stators can be an intricate and detail-intensive process, replacing failed stators with an entirely new part can be a much easier route, depending on the specific motorcycle.

Can a bad stator damage a rectifier?

Registered. To answer your question yes it can, there are three diodes(phases) within the rectifier that allow current to go in one direction through the device (ie. Stator > Rectifier > Battery). But will not allow currrent to flow in the opposite direction.

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What happens if a stator gets wet?

What happens if water gets into the stator windings, is that the ‘insulation resistance’ between the three separate windings that make up the stator, goes down to very low levels. … The display on the IR tester shows the resistance between the separate stator windings. The insulation resistance should be very HIGH.

Can a bad battery ruin a stator?

It is possible, especially if the battery has been boiled dry (the plates WILL warp and short). Even a non shorted bad battery (one that draws too much charging current) can fail a stator, especially an old one.

How long does it take to replace a stator?

You should be able to get in and out under 3 hours.

Will outboard run without rectifier?

Usually, the outboard will start and run without the rectifier. However, it might be running down the battery, allowing it to quit once the battery runs out of a charge. … Either way, running your outboard without the voltage regulator at high RPMs can cause the stator to fry, leading you to more trouble down the road.

Can a stator put out too much voltage?

(Typically, a bad stator won’t put out excess electricity. One of the windings goes bad and voltage output drops.) This AC voltage goes to the regulator/rectifier where it is changed to DC voltage and the required amount is sent to the battery.

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