The Arctic Cat DVX 90, a popular choice for introducing young riders to the world of ATVs, offers a thrilling yet manageable experience. However, like any machine, it's not without its quirks and potential issues. Knowing the common problems associated with the DVX 90 can help you troubleshoot effectively, maintain your ATV properly, and ensure your young rider enjoys countless hours of safe and fun adventures.

So, What Are the Most Common DVX 90 Headaches?

Let's dive into some of the most frequently encountered problems with the Arctic Cat DVX 90, along with practical solutions to get you back on the trails.

Starting Problems: When It Just Won't Fire Up

One of the most frustrating issues with any ATV, including the DVX 90, is difficulty starting. This can stem from several factors, and pinpointing the exact cause is crucial.

  • Dead or Weak Battery: This is often the first suspect. ATV batteries, especially if not properly maintained during off-season storage, can lose their charge. Solution: Check the battery voltage with a multimeter. A healthy battery should read around 12.6 volts. If it's significantly lower, try charging it with a compatible ATV battery charger. If it still won't hold a charge, it's time for a replacement. Remember to use a battery tender during storage to prolong its life.

  • Faulty Starter Motor: The starter motor is responsible for cranking the engine. If you hear a clicking sound when you press the start button, but the engine doesn't turn over, the starter motor could be the culprit. Solution: Check the connections to the starter motor for corrosion or looseness. If the connections are clean and tight, the starter motor itself might be faulty and require replacement.

  • Dirty Carburetor: The carburetor mixes air and fuel for combustion. Over time, it can become clogged with dirt and debris, preventing the engine from starting. Solution: Cleaning the carburetor is a common maintenance task. You can purchase carburetor cleaner and follow the instructions in your owner's manual or online tutorials. For a thorough cleaning, you might need to disassemble the carburetor, which requires some mechanical skill. If you're not comfortable doing this yourself, take it to a qualified mechanic.

  • Spark Plug Issues: A faulty or fouled spark plug can prevent the engine from igniting the fuel-air mixture. Solution: Remove the spark plug and inspect it. A healthy spark plug should have a light tan color. If it's black, oily, or damaged, it needs to be replaced. Make sure to use the correct spark plug for your DVX 90 model.

  • Ignition System Problems: Issues with the ignition coil, CDI (Capacitor Discharge Ignition) unit, or stator can also cause starting problems. Solution: Diagnosing these issues can be more complex and often requires specialized tools and knowledge. Consulting a qualified mechanic is recommended.

Engine Performance Problems: Sputtering, Stalling, and Lack of Power

Even if the DVX 90 starts, you might encounter problems with its engine performance.

  • Fuel Delivery Issues: A clogged fuel filter, a faulty fuel pump, or a blocked fuel line can restrict fuel flow to the engine, resulting in poor performance. Solution: Check the fuel filter and replace it if necessary. Inspect the fuel lines for kinks or blockages. If the fuel pump is suspected, you can test its output pressure.

  • Air Intake Problems: A dirty air filter can restrict airflow to the engine, leading to a rich fuel mixture and reduced power. Solution: Clean or replace the air filter regularly. The frequency depends on the riding conditions. Dusty environments require more frequent cleaning.

  • Carburetor Tuning: If the carburetor is not properly tuned, the engine might run too lean (not enough fuel) or too rich (too much fuel). Solution: Adjusting the carburetor requires some knowledge of engine tuning. Consult your owner's manual or a qualified mechanic for guidance.

  • Exhaust Restrictions: A clogged exhaust system can restrict the flow of exhaust gases, reducing engine performance. Solution: Inspect the exhaust system for any obstructions. Carbon buildup can sometimes restrict the exhaust flow.

Transmission Troubles: Slipping and Jerking

The DVX 90 uses a CVT (Continuously Variable Transmission) which can sometimes present its own set of problems.

  • Worn CVT Belt: The CVT belt is a critical component that transfers power from the engine to the wheels. Over time, the belt can wear out, causing slipping and reduced performance. Solution: Inspect the CVT belt for wear and tear. Replace it if it's cracked, frayed, or excessively worn.

  • Clutch Problems: The CVT system also includes clutches that engage and disengage the power transfer. If these clutches are worn or damaged, they can cause slipping and jerking. Solution: Inspect the clutches for wear and damage. Replacing the clutches might be necessary. This often requires specialized tools and knowledge.

  • CVT Housing Issues: Debris can enter the CVT housing, causing damage to the belt and clutches. Solution: Inspect the CVT housing for cleanliness and proper sealing. Clean the housing regularly and replace any damaged seals.

Brake Problems: Squealing, Grinding, and Poor Stopping Power

Brakes are essential for safety, so any issues should be addressed immediately.

  • Worn Brake Pads: This is the most common brake problem. As brake pads wear down, they lose their ability to effectively grip the rotors. Solution: Inspect the brake pads for wear. If they're thin or worn down to the metal, replace them immediately.

  • Contaminated Brake Pads: Oil, grease, or other contaminants can reduce the effectiveness of the brake pads. Solution: Clean the brake pads with brake cleaner. If the contamination is severe, the pads might need to be replaced.

  • Air in the Brake Lines: Air in the brake lines can make the brakes feel spongy and reduce their stopping power. Solution: Bleed the brake lines to remove the air. This requires a brake bleeding kit and some mechanical skill.

  • Sticking Calipers: The brake calipers can sometimes stick, preventing the brake pads from fully releasing. Solution: Clean and lubricate the brake calipers. If they're severely corroded, they might need to be rebuilt or replaced.

Electrical Gremlins: Lights, Switches, and Wiring

Electrical problems can be tricky to diagnose.

  • Blown Fuses: A blown fuse indicates an overload in the electrical system. Solution: Replace the blown fuse with a fuse of the same amperage. If the fuse blows again, there's likely a short circuit in the wiring.

  • Loose Connections: Loose or corroded electrical connections can cause a variety of problems. Solution: Inspect all electrical connections for tightness and cleanliness. Clean any corroded connections with electrical contact cleaner.

  • Faulty Switches: The switches for the lights, ignition, and other functions can fail over time. Solution: Test the switches with a multimeter to check for continuity. Replace any faulty switches.

  • Wiring Problems: Damaged or frayed wiring can cause shorts and other electrical problems. Solution: Inspect the wiring harness for any damage. Repair or replace any damaged wiring.

Keeping Your DVX 90 Healthy: Proactive Maintenance is Key

Preventing problems is always better than fixing them. Regular maintenance can significantly extend the life of your DVX 90 and keep it running smoothly.

  • Regular Oil Changes: Change the engine oil and filter according to the manufacturer's recommendations. This helps keep the engine lubricated and prevents wear.

  • Air Filter Maintenance: Clean or replace the air filter regularly to ensure proper airflow to the engine.

  • Spark Plug Inspection: Inspect the spark plug regularly and replace it as needed.

  • Lubrication: Lubricate all moving parts, such as the suspension components and steering linkage, to prevent wear and tear.

  • Tire Pressure: Maintain the correct tire pressure for optimal handling and tire life.

  • Battery Maintenance: Keep the battery clean and charged. Use a battery tender during storage.

  • Regular Inspections: Regularly inspect the ATV for any signs of damage or wear. Address any issues promptly to prevent them from escalating.

Frequently Asked Questions About DVX 90 Problems

  • Why is my DVX 90 hard to start when it's cold? Cold temperatures can make it harder for the fuel to vaporize. Try using the choke or starting fluid to help the engine start.

  • My DVX 90 is sputtering. What could be wrong? This is often caused by a dirty carburetor or a clogged fuel filter. Clean the carburetor and replace the fuel filter to see if that resolves the issue.

  • How often should I change the oil in my DVX 90? Refer to your owner's manual for the recommended oil change interval. Generally, it's recommended to change the oil every 25-50 hours of riding.

  • What type of oil should I use in my DVX 90? Use a high-quality 4-stroke ATV oil that meets the manufacturer's specifications. Check your owner's manual for the specific oil type and viscosity recommended for your model.

  • Where can I find parts for my DVX 90? You can find parts at your local ATV dealer, online retailers, or aftermarket parts suppliers. Make sure to verify the part number to ensure it's compatible with your DVX 90.

  • How do I adjust the throttle limiter on my DVX 90? The throttle limiter is typically a screw on the throttle housing. Turning the screw in reduces the throttle travel and limits the top speed.

Conclusion

The Arctic Cat DVX 90 can provide years of enjoyment with proper care and maintenance. By understanding the common problems and taking proactive steps to prevent them, you can keep your young rider safe and ensure countless hours of fun on the trails. Remember to consult your owner's manual and seek professional help when needed.