Polaris Scrambler 400 Problems And How To Fix

Are you tired of dealing with constant mechanical issues with your Polaris Scrambler 400? Are you frustrated with repair bills piling up and no clear solutions in sight?

If so, you’re not alone. As an avid off-road enthusiast, I know firsthand the importance of having a reliable and functional vehicle to tackle even the toughest terrain.

But the reality is, even the most well-crafted machines can experience hiccups, and the Polaris Scrambler 400 is no exception.

However, fear not, as we have the solutions you need to get back on the trail with confidence.

We’ll explore the most common Polaris Scrambler 400 problems and offer practical, effective solutions to keep your ride running smoothly.

So, let’s dive in and get ready to hit the trails with peace of mind.

Polaris Scrambler 400 Problems And How To Fix

1. Starting Problem

Are you having trouble starting your Polaris Scrambler 400? If so, you’re not alone.

This issue is common among ATV owners, and there are a few unique causes that may be the root of the problem.

The first cause of starting problems could be a faulty battery. If the battery is old or has been sitting for an extended period, it may no longer have enough power to start the engine.

To fix this issue, you’ll need to replace the battery with a new one.

The second cause of starting problems could be a clogged fuel filter.

If the fuel filter is dirty or clogged, it may prevent the engine from getting enough fuel to start properly.

To fix this issue, you’ll need to remove the fuel filter and clean or replace it.

The third cause of starting problems could be a faulty spark plug.

If the spark plug is worn out or damaged, it may not provide enough spark to ignite the fuel in the engine.

To fix this issue, you’ll need to replace the spark plug with a new one.

Lastly, the fourth cause of starting problems could be a faulty starter motor. If the starter motor is weak or damaged, it may not be able to turn the engine over.

To fix this issue, you’ll need to replace the starter motor with a new one.

2. Fuel Problems

Fuel issues can be a challenging problem to diagnose and fix, but with some troubleshooting and know-how, you can get your ATV running smoothly again.

One common cause of fuel problems is a clogged fuel filter.

Over time, dirt and debris will accumulate in the filter, leading to reduced fuel flow and poor performance.

To fix this issue, you’ll need to locate the fuel filter, remove it, and clean or replace it.

Another possible culprit is a dirty carburetor. The carburetor is responsible for mixing air and fuel to provide the necessary combustion.

If it becomes dirty, it can lead to clogs, poor fuel efficiency, and ultimately, reduced performance.

To fix this issue, you can try cleaning the carburetor or replacing it altogether.

In some cases, fuel problems can be caused by a faulty fuel pump.

The fuel pump delivers fuel from the tank to the carburetor and can become clogged or malfunction over time.

To fix this issue, you’ll need to either clean or replace the fuel pump.

Lastly, contaminated fuel can also cause fuel problems. If you recently filled up with bad gas, you may experience issues with performance, starting, or idling.

To fix this issue, you’ll need to drain the fuel tank and fill it with fresh gasoline.

3. Engine Problems

One of the most common causes of engine problems in a Polaris Scrambler 400 is a dirty air filter.

A dirty air filter can cause the engine to run poorly, and even possibly result in engine failure.

To fix this problem, first remove the seat and unscrew the air filter cover.

Then, remove the old air filter and replace it with a new one.

Be sure to clean the air filter housing before replacing the cover.

Another potential cause of engine problems is a bad spark plug.

A spark plug that is worn out or damaged can cause misfires, which can lead to poor engine performance and even engine damage.

To fix this issue, first remove the spark plug wire and use a spark plug socket to remove the old spark plug.

Replace the old spark plug with a new one and reattach the spark plug wire.

Additionally, a clogged fuel filter can also cause problems with the engine.

If the fuel filter is dirty or clogged, it can restrict the flow of fuel to the engine, causing it to run poorly or even stall. To fix this issue, locate the fuel filter and remove it.

Replace the old fuel filter with a new one and be sure to prime the fuel system before starting the engine.

Finally, low oil levels can also cause engine problems. If the engine is running low on oil, it can cause excessive wear on the engine components and even cause the engine to seize.

To fix this issue, check the oil level and top it off if necessary.

Also, be sure to check for any leaks that may be draining the oil from the engine.

4. Transmission Problems

One of the unique causes of transmission problems could be an improper transmission fluid level. The fluid level might be too low or too high, leading to transmission issues.

To fix this, first, you need to identify the type of transmission fluid recommended for your quad.

Then check the fluid level accurately by using a dipstick or following the manufacturer’s instructions.

If the level is too low, add the correct type of transmission fluid in small increments until you reach the recommended level.

If the level is too high, carefully drain the excess fluid until you reach the recommended level.

Another unique cause of transmission problems could be a worn-out or defective clutch.

The clutch is a crucial component of the transmission system and if it fails, can lead to serious transmission issues.

To fix this, you need to inspect the clutch system for wear and tear or any other defects.

If you find any signs of damage, you will need to replace the clutch.

It is recommended to get professional help to replace the clutch as it involves a significant amount of technical expertise.

Lastly, a clogged or dirty transmission filter can also cause transmission problems.

Over time, the transmission filter can accumulate dirt and debris, which can block the flow of transmission fluid and cause overheating.

To fix this, you need to replace the transmission filter. This can be done manually by locating the transmission filter and replacing it with a new one.

5. Steering Problems

Steering problems can arise due to several reasons, and it’s essential to identify the root cause to fix the issue correctly.

One of the unique causes of steering problems in the Polaris Scrambler 400 is faulty steering rack or tie rods.

When there’s excessive play in the rack or tie rods, it can cause the steering to feel loose, and the vehicle may wander or pull to one side. To fix this issue, you’ll need to replace the worn-out components.

Another cause of steering problems could be a damaged or worn-out ball joint.

Ball joints connect the steering knuckle to the upper and lower control arms, and worn-out ball joints can cause the steering to feel heavy or affect the vehicle’s alignment.

Replacing the damaged ball joint is the only solution to fix the problem.

Loose or worn-out steering bearings can also result in steering problems in the Polaris Scrambler 400.

When the bearings become loose, it can cause the steering to rattle or feel rough while turning. Replacing the worn-out bearings is the only solution to fix this problem.

Lastly, low steering fluid levels or a damaged power steering pump can also contribute to steering problems.

When there’s insufficient steering fluid, the steering may feel heavy or make whining noises.

It’s crucial to check and top-up the fluid levels regularly. If the power steering pump is damaged, it’ll need to be replaced to fix the issue.

6. Overheating Problems

Are you experiencing overheating issues with your Polaris Scrambler 400? If so, you’re not alone.

Overheating is a common problem in all kinds of vehicles, and it can be caused by a variety of factors.

The good news is that many of these causes are easily fixable.

One potential cause of overheating in your Polaris Scrambler 400 is a faulty radiator fan.

If your fan isn’t spinning properly, it can’t draw enough air across the radiator to cool the engine.

To fix this issue, you’ll need to inspect the fan blades and motor for any damage, and replace any faulty parts.

Another cause of overheating is a clogged radiator. Over time, debris and dirt can build up in the radiator, preventing coolant from flowing properly.

To fix this issue, you’ll need to flush the radiator and remove any obstructions.

A third potential cause of overheating is a malfunctioning water pump.

If the water pump isn’t circulating coolant through the system properly, the engine will overheat.

To fix this issue, you’ll need to inspect the water pump for any damage or leaks, and replace it if necessary.

Finally, a leak in the cooling system can also cause overheating.

If coolant is leaking out of your Polaris Scrambler 400, it can’t do its job of keeping the engine cool.

To fix this issue, you’ll need to locate and repair any leaks in the cooling system.

9. Hydraulic System Problem

One of the most frequent culprits of hydraulic system problems is low fluid levels.

If your ATV’s hydraulic system is operating with low levels of fluid, it can cause various issues such as difficulty in steering and uneven brake pressure.

To fix this problem, you need to identify the hydraulic fluid reservoir’s location and check the fluid level regularly.

If you notice low fluid levels, add more hydraulic fluid as per the manufacturer’s recommendations and specifications.

Another cause of hydraulic system problems is a leak in the hydraulic lines or fittings.

Leaks can happen with age, wear and tear, or improper installation of the lines or fittings.

To fix this problem, you will need to inspect the system thoroughly for any visible leaks.

Once you have identified the leakage point, remove the damaged fittings or hoses, replace them with new parts, and ensure they are securely tightened.

Air bubbles in the hydraulic system can also cause problems with the system’s performance, leading to unexpected and uneven pressure on the brakes or steering system.

To fix this problem, you must purge the air out of the hydraulic system by bleeding the brakes and flushing the hydraulic fluid lines.

Lastly, a defective hydraulic pump or motor can also contribute to the hydraulic system issues in your Polaris Scrambler 400.

If you identify this as the problem, you will need to replace the pump or motor with a new one, which can be done by a professional mechanic or yourself with the proper tools and instructions from the manufacturer.

What is the difference between a Polaris Scrambler and Sportsman?

As a knowledgeable and experienced ATV enthusiast, it’s important to understand the key differences between Polaris Scrambler and Sportsman models.

While both are impressive machines, these two ATV models have distinct features that set them apart from each other.

Firstly, the Polaris Scrambler boasts a sportier design that emphasizes a rider’s need for speed and maneuverability.

The Scrambler is built with an impressive 850cc twin-cylinder engine that generates up to 89 horsepower, making it a powerhouse on the trails.

Additionally, the Scrambler is lightweight and features a tight turning radius, which makes it ideal for navigating technical terrain.

On the other hand, the Polaris Sportsman embraces a more utility-focused design that emphasizes a rider’s need for hauling, towing, and carrying capabilities.

The Sportsman has a wider, longer wheelbase and higher ground clearance, which makes it more suitable for hauling cargo, towing trailers, and navigating through rough terrain.

This machine has a 570cc engine that produces up to 44 horsepower, providing plenty of power for farm work, hunting, or general utility riding.

Moreover, the Sportsman features Polaris’ legendary Active Descent Control (ADC) system, which provides automatic engine braking on steep terrain, giving riders added control and safety.

This feature is not available on the Scrambler.

Frequently Asked Questions

How much is a Polaris Scrambler 400 worth?

Base Price $4,949

How much horsepower does a Polaris 400 Scrambler have?

48 HP

Is the Polaris Scrambler 2 stroke?

2-STROKE

Is the Polaris Scrambler 400 4×4?

What is the top speed of a Mash 400 Scrambler?

95mph

Conclusion

As we wrap up our discussion on Polaris Scrambler 400 problems and their solutions, it’s important to remember that every machine is bound to have its flaws, but it’s our responsibility as conscientious riders to take the necessary steps to keep them running smoothly.

However, beyond the technical aspects of owning an ATV, we must also remember the impact our activities have on the environment.

The beauty of off-roading lies in experiencing the raw natural beauty of untouched landscapes, but it’s imperative that we do so in a responsible and sustainable manner.

Irresponsible riding can cause irreparable damage to local ecosystems, and it’s up to each and every one of us to do our part in preserving our natural resources for future generations.

So, as you hit the trails with your Scrambler 400, take a moment to appreciate the beauty around you, but also remember to do your part in keeping it that way.

With careful maintenance and responsible riding, we can enjoy the thrill of off-roading while also being mindful of our impact on the environment.