10 Common Polaris Outlaw 90 Problems (With Fixes!)

In this article, we’ll take a look at some of the most common Polaris Outlaw 90 Problems and provide solutions for each one.

Polaris Outlaw 90 Problems

Polaris Outlaw 90 Problems

1. Poor Engine Performance

Poor engine performance in the Polaris Outlaw 90 can be caused by several factors, including a lack of regular maintenance, worn-out spark plugs or ignition coils, and fuel delivery issues.


Regular cleaning and lubrication of the engine is essential for it to run at its peak performance.

If the spark plugs or ignition coils are worn out, they may need to be changed to ensure proper combustion and fuel efficiency.

Also, if there is an issue with the fuel delivery system, such as a clogged fuel filter or faulty injectors, this could lead to decreased engine performance.

2. Faulty Electrical System

The Polaris Outlaw 90 is equipped with an electrical system that can experience problems due to a number of different causes.

In some cases, the electrical system may malfunction due to loose or corroded wires in the wiring harness, a faulty spark plug, an incorrectly set timing belt, or an incorrect carburetor adjustment.


The first step in addressing any issues with the electrical system should be to check all of the wiring and connections for signs of wear and damage.

Furthermore, it is important to ensure that all spark plugs are properly connected and functioning correctly, that the timing belt is properly set and adjusted, and that the carburetor has been properly calibrated.

If any of these components are not working correctly, they should be immediately replaced or repaired as necessary.

3. Chain Tension Adjustment Issues

The chain tension adjustment on the Polaris Outlaw 90 is critical for ensuring proper operation of the ATV.

If the chain becomes too loose or too tight, it can cause skipping, jerking, and other performance issues.


To adjust the chain tension, you must first locate both ends of the chain and make sure they are at their correct height.

After that, use a tensioning tool to slowly move one end of the chain until you have achieved the desired tension.

It’s important to keep in mind that this adjustment should be done with care, as too much or too little tension can cause damage to other components and even lead to unsafe riding conditions.

Once complete, check your work and ensure that the chain is still properly adjusted before continuing use.

4. Clutch Slipping/Grinding

Clutch slipping/grinding is a common problem with the Polaris Outlaw 90.

The main cause of this issue is a worn or damaged clutch belt, leading to reduced power transfer between the engine and drivetrain.


To fix this, you should replace the clutch belt with an OEM-approved replacement as soon as possible.

If the problem persists after replacing the belt, it could indicate more serious issues such as improper alignment of components or even damage to other parts of the clutch system.

5. Carburetor Problems

Carburetor problems are one of the most common issues with the Polaris Outlaw 90.

The carburetor is responsible for regulating the air and fuel mixture to ensure optimal combustion within the engine.

Problems can arise when either too little or too much air and fuel mixture is allowed into the engine, resulting in poor performance or misfiring.

Common causes of carburetor issues may include clogged jets, dirt buildup, improper adjustment, vacuum leaks, worn or damaged parts, and faulty fuel lines.


Fortunately, these problems can generally be remedied through simple cleaning and maintenance procedures such as checking for dirt or debris buildup in the carburetor bowl, replacing any worn hoses or gaskets, and ensuring proper adjustments are made to the idle mixture screws.

Note: If more extensive repairs are needed, it’s always best to take your vehicle to a qualified mechanic who specializes in working on Polaris Outlaw 90s.

6. Excessive Vibration

Excessive vibration in Polaris Outlaw 90 ATVs can be caused by a variety of issues.

Common causes include malfunctioning or worn suspension parts, poor tire alignment, loose engine mount bolts, and improperly adjusted carburetors.


To fix these problems, the suspension system should be inspected for any damaged or worn-out parts that may need replacing.

Besides, the tires should be properly aligned and balanced to reduce vibration from tire contact with the road surface.

If possible, check the engine mounts for any signs of looseness and tighten them if necessary.

Lastly, adjusting the carburetor settings may also help alleviate some of the excessive vibrations coming from the vehicle.

7. Poor Fuel Economy

Poor fuel economy in the Polaris Outlaw 90 is a common issue and can be attributed to a variety of factors.

The most common cause is an incorrectly adjusted carburetor, which can lead to an overly rich fuel mixture that results in decreased performance and decreased fuel efficiency.

Other causes of poor fuel economy can include clogged air filters, worn spark plugs, or dirty oil.


To resolve this issue, owners should check their carburetor settings, replace any dirty or clogged parts such as air filters and spark plugs, and ensure the engine oil is always clean.

8. Balancing Issues

Balancing issues with the Polaris Outlaw 90 can be caused by an improper suspension setup, an uneven weight distribution, or even a faulty shock absorber.


If you are experiencing any of these issues, the first step would be to consult your owner’s manual and ensure your suspension is adjusted properly.

Additionally, check to make sure the tires are filled to the correct pressure and look for any signs of wear or damage that could cause an imbalance.

You should also inspect your shock absorbers for any leakage or faulty components that can cause unevenness.

9. Brake Trouble

Brake Trouble in Polaris Outlaw 90s may be caused by several issues, including a lack of brake fluid, worn pads or rotors, or a failed master cylinder.

When brake trouble is present, it is important to take action and diagnose the issue immediately.

A lack of brake fluid can be remedied with a fluid top-up, while more serious issues like worn components will require replacement parts such as new pads and/or rotors.


In the most severe cases, the master cylinder may need to be replaced in order for the brakes to work properly.

It is important to pay attention to any signs of brake trouble so that these problems can be addressed before becoming more serious.

10. Suspension problems

Suspension problems are one of the most common mechanical issues encountered with Polaris Outlaw 90s.

The issues can range from small rattles to more severe mechanical faults such as excessive bouncing or rocking during driving.

Problems can be caused by worn-out components, over-tightening of some parts, or incorrect installation of components.


It is important to address suspension problems quickly to avoid further damage and inconvenience.

Solutions include regular inspection and maintenance, replacing worn-out components, tightening loose bolts and nuts, lubricating joints and pivots, and ensuring that all components are installed correctly.


The Polaris Outlaw 90 offers a great set of features for young riders, but it is not without its problems.

It’s important to be aware of these potential pitfalls so you can take proactive steps to avoid them or address them if they do arise.

If you have any questions about how to keep your vehicle running smoothly or need help troubleshooting an issue, our team would love to assist you – just give us a call!

Technical Specifications of the Polaris Outlaw 90:

Engine89cc air-cooled, 4-stroke engine
Horsepower8 HP
TransmissionAutomatic CVT (Continuously Variable Transmission)
Drive System2WD (Two-Wheel Drive)
Suspension – FrontSingle A-arm with 5″ (12.7 cm) of travel
Suspension – RearMono-shock swingarm with 6″ (15.2 cm) of travel
Brakes – Front/RearDrum brakes
Tires – Front/Rear19 x 7-8 / 18 x 9.5-8
Fuel Capacity1.6 gallons (6.06 liters)
Ground Clearance 4 inches (10.2 cm)
Wheelbase41.5 inches (105.4 cm)
Length 61.5 inches (156.2 cm)
Width36.75 inches (93.3 cm)
Height38.5 inches (97.8 cm)
Dry Weight265 pounds (120.2 kg)

Pros and Cons of Polaris Outlaw 90:


  1. Adjustable Speed Limiter: Parents can control the top speed to ensure that their children do not ride too fast, allowing them to set boundaries as per the child’s experience level.
  2. Design: It has a kid-friendly design which is appealing to young riders.
  3. Automatic Transmission: The absence of a manual gearbox makes it easier for kids to operate as they don’t have to shift gears.
  4. Reliability: Polaris has a good reputation for building reliable ATVs.
  5. Quality Suspension: The suspension is tailored for lighter riders, providing a smoother ride.


  1. Price: Compared to some other youth ATVs, the Polaris Outlaw 90 might be on the pricier side.
  2. Maintenance: Like all ATVs, it requires regular maintenance to keep it in top shape, which can be a challenge for some parents who aren’t mechanically inclined.

Frequently Asked Questions

Is a Polaris Outlaw 90 a 2-stroke?

No, a Polaris Outlaw 90 has a four-stroke engine.

Does Polaris Outlaw 90 have a reverse?

Yes, Polaris Outlaw 90 has reverse gear.

Is the Polaris Outlaw fuel injected?

Yes, it is fuel injected with Electronic Fuel Injection (EFI).

Is Polaris Outlaw automatic?

Yes, the Polaris Outlaw ATV has an automatic transmission.

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