So, you're thinking about a Can-Am DS 90 or maybe you already own one? These little ATVs are popular choices for young riders, offering a taste of off-road adventure. But like any machine, they can come with their share of hiccups. Understanding these potential issues beforehand can save you time, money, and frustration, letting you focus on the fun.

What Are Some Common Issues Popping Up With The DS 90?

Let's dive into some of the most frequently encountered problems with the Can-Am DS 90. We'll break them down and offer some troubleshooting tips.

Starting Troubles: Why Won't It Fire Up?

This is a big one, and probably the most common complaint. A DS 90 that refuses to start can be incredibly frustrating, especially for eager young riders (and their equally eager parents!). Here are a few potential culprits:

  • Battery Issues: This is almost always the first place to look. A weak or dead battery is a prime suspect.
    • The Fix: Start by checking the battery terminals for corrosion. Clean them thoroughly. Then, use a multimeter to test the battery's voltage. It should read around 12.6 volts when fully charged. If it's significantly lower, try charging it. If it still won't hold a charge, it's time for a replacement.
  • Spark Plug Problems: A fouled or worn spark plug can prevent the engine from igniting the fuel mixture.
    • The Fix: Remove the spark plug and inspect it. Look for signs of carbon buildup, oil fouling, or damage. Clean the plug with a wire brush or, better yet, replace it with a new one of the correct type. Make sure to gap it properly according to the manufacturer's specifications.
  • Fuel Delivery Issues: If the engine isn't getting fuel, it won't start.
    • The Fix: Check the fuel tank to make sure there's gas. (Sounds obvious, but it happens!). Next, inspect the fuel lines for kinks or clogs. The fuel filter could also be blocked. Replacing the fuel filter is a simple preventative measure, especially if it hasn't been done in a while. Also, consider the carburetor. A clogged carburetor is a common issue, especially if the ATV has been sitting for a while. Carburetor cleaning is best left to someone experienced, but you can find guides online and carburetor cleaner at most auto parts stores.
  • Ignition System Problems: The ignition system provides the spark needed to ignite the fuel.
    • The Fix: This can be a bit more complex. Check the ignition coil, the CDI (Capacitor Discharge Ignition) unit, and the stator. Testing these components often requires specialized tools and knowledge. If you're not comfortable working on electrical systems, it's best to take it to a qualified mechanic.
  • Safety Switch Issues: The DS 90 has safety switches that prevent it from starting if certain conditions aren't met.
    • The Fix: Check the kill switch to make sure it's in the "run" position. Also, check the brake lever switch. Sometimes, these switches can become faulty or misaligned.

Performance Problems: It's Running Rough or Lacking Power

Even if the DS 90 starts, it might not be running optimally. Here are some common performance issues:

  • Carburetor Issues (Again!): We mentioned this in the starting section, but carburetor problems are a frequent cause of poor performance as well.
    • The Fix: A dirty or improperly adjusted carburetor can cause a range of issues, including rough idling, poor acceleration, and stalling. Cleaning and adjusting the carburetor can often resolve these problems. Again, consult a service manual or a qualified mechanic for proper adjustment procedures.
  • Air Filter Problems: A dirty air filter restricts airflow to the engine, leading to reduced power and poor fuel economy.
    • The Fix: Regularly inspect and clean the air filter. If it's heavily soiled or damaged, replace it. Follow the manufacturer's recommendations for cleaning and oiling the air filter.
  • Exhaust System Problems: A clogged exhaust system can restrict the engine's ability to breathe.
    • The Fix: Inspect the exhaust system for any blockages or damage. Make sure the spark arrestor is clean and free of debris. If the exhaust system is severely damaged, it may need to be replaced.
  • Worn Clutch: Over time, the clutch can wear out, leading to slipping and poor performance.
    • The Fix: Check the clutch plates for wear. If they're worn beyond the specified limits, they'll need to be replaced. Clutch adjustment may also be necessary.
  • Incorrect Jetting: If you live at a high altitude or have modified the engine, the carburetor may need to be rejetted to ensure proper fuel mixture.
    • The Fix: Consult a jetting chart or a qualified mechanic to determine the correct jetting for your specific conditions.

Braking Problems: It's Not Stopping Like It Should

Brakes are obviously critical for safety. Here's what to watch out for:

  • Worn Brake Pads: This is the most common brake problem.
    • The Fix: Regularly inspect the brake pads for wear. If they're worn down to the backing plates, they need to be replaced immediately.
  • Air in the Brake Lines: Air in the brake lines can make the brakes feel spongy and reduce their effectiveness.
    • The Fix: Bleed the brakes to remove any air from the system. Follow the manufacturer's instructions for bleeding the brakes.
  • Leaking Brake Lines or Calipers: Leaks can cause a loss of brake fluid and reduce braking power.
    • The Fix: Inspect the brake lines and calipers for any signs of leaks. Replace any damaged components.
  • Sticking Brakes: Sometimes, the brake calipers can stick, causing the brakes to drag.
    • The Fix: Clean and lubricate the brake caliper slides. If the calipers are severely corroded, they may need to be rebuilt or replaced.

Suspension Issues: It's a Bumpy Ride

A comfortable ride is important, and so is proper handling.

  • Worn Shocks: Over time, the shocks can lose their damping ability, leading to a bouncy ride.
    • The Fix: Inspect the shocks for leaks or damage. If they're worn out, they'll need to be replaced.
  • Loose Suspension Components: Loose suspension components can cause instability and poor handling.
    • The Fix: Regularly inspect all suspension components for looseness. Tighten any loose bolts or replace any worn bushings.
  • Incorrect Tire Pressure: Improper tire pressure can affect handling and ride quality.
    • The Fix: Check the tire pressure regularly and inflate the tires to the recommended pressure.

Electrical Gremlins: Lights Don't Work, Etc.

Electrical problems can be tricky to diagnose.

  • Blown Fuses: A blown fuse is often the first sign of an electrical problem.
    • The Fix: Replace the blown fuse with a new fuse of the correct amperage. If the fuse blows again, there's likely a short circuit somewhere in the system.
  • Loose or Corroded Connections: Loose or corroded connections can cause a variety of electrical problems.
    • The Fix: Inspect all electrical connections for looseness or corrosion. Clean any corroded connections and tighten any loose connections.
  • Faulty Wiring: Damaged or frayed wiring can cause shorts and other electrical problems.
    • The Fix: Inspect the wiring harness for any signs of damage. Repair or replace any damaged wiring.

Prevention is Key: How to Keep Your DS 90 Running Smoothly

Regular maintenance is crucial for preventing problems and extending the life of your DS 90. Here are some essential maintenance tasks:

  • Regular Oil Changes: Change the oil and filter according to the manufacturer's recommendations. This is arguably the most important thing you can do.
  • Air Filter Maintenance: Clean or replace the air filter regularly.
  • Spark Plug Maintenance: Inspect and replace the spark plug as needed.
  • Brake Maintenance: Inspect the brake pads and bleed the brakes regularly.
  • Chain Maintenance: Keep the chain clean, lubricated, and properly adjusted (if applicable).
  • Tire Maintenance: Check the tire pressure regularly and inspect the tires for wear and damage.
  • General Inspection: Regularly inspect the ATV for any signs of damage, leaks, or loose components.

Where to Find Help: Resources for DS 90 Owners

  • Owner's Manual: The owner's manual is your first stop for information about your DS 90.
  • Service Manual: A service manual provides detailed instructions for repairing and maintaining your ATV.
  • Online Forums: Online forums dedicated to ATVs can be a valuable resource for finding information and getting help from other owners.
  • Qualified Mechanic: If you're not comfortable working on your ATV yourself, take it to a qualified mechanic.

Frequently Asked Questions

  • Why won't my DS 90 start after sitting for the winter? The carburetor is likely clogged. Clean the carburetor and replace the fuel filter.
  • What kind of oil should I use in my DS 90? Consult your owner's manual for the recommended oil type and viscosity. Using the correct oil is critical for engine longevity.
  • How often should I change the oil in my DS 90? Refer to your owner's manual, but typically every 25 hours of riding is a good rule of thumb. More frequent changes are needed in dusty or muddy conditions.
  • My DS 90 is running rough. What could be the problem? Possible causes include a dirty carburetor, a clogged air filter, or a worn spark plug. Start with the simplest things first.
  • Where can I buy parts for my DS 90? You can purchase parts from your local Can-Am dealer, online retailers, or aftermarket parts suppliers. Compare prices and read reviews before making a purchase.

In conclusion, while the Can-Am DS 90 is a great entry-level ATV, understanding its potential problems and performing regular maintenance is key to ensuring a safe and enjoyable riding experience. Remember to consult your owner's manual and seek professional help when needed.