The Polaris Ace 570, a single-seat ATV, promised a unique blend of ATV agility and UTV-like comfort. While it offered a thrilling ride and filled a niche in the off-road market, some owners have encountered a range of problems. Understanding these common issues can help potential buyers make informed decisions and current owners troubleshoot problems effectively.

What are Ace 570 Owners Complaining About?

Let's dive into some of the most frequently reported issues with the Polaris Ace 570. We'll cover everything from engine troubles to electrical gremlins, suspension woes, and more.

Engine Issues: The Heart of the Matter

The 570 engine, while generally reliable, isn't immune to problems. Here are some common complaints:

  • Hard Starting, Especially When Cold: Many owners have reported difficulty starting their Ace 570, particularly in cold weather. This can be attributed to a few factors.
    • Fuel System Issues: A dirty fuel filter, clogged fuel injector, or a weak fuel pump can all contribute to hard starting. Fuel injected engines are dependent on proper fuel pressure and flow.
    • Valve Adjustment: The valve clearances might be out of spec. This is a common issue as engines wear and valves may not seat properly.
    • Battery Problems: A weak or dying battery can struggle to crank the engine fast enough, especially in cold temperatures. Polaris ATVs can be very sensitive to battery voltage.
  • Engine Knocking or Ticking: Unusual engine noises are always a cause for concern.
    • Valve Train Noise: Ticking sounds often originate from the valve train, especially if the valve clearances are too loose.
    • Piston Slap: Knocking sounds could indicate piston slap, which occurs when the piston rocks within the cylinder due to excessive wear.
    • Rod Knock: A deep knocking sound could be a sign of rod knock, a serious issue requiring immediate attention.
  • Overheating: Overheating can lead to severe engine damage if left unaddressed.
    • Coolant Leaks: Inspect the radiator, hoses, and water pump for leaks.
    • Radiator Clogging: Mud and debris can clog the radiator fins, reducing its cooling efficiency.
    • Faulty Thermostat: A stuck thermostat can prevent coolant from circulating properly.
    • Air in the System: Air pockets in the cooling system can also cause overheating.
  • Loss of Power: A sudden or gradual loss of power can be frustrating and potentially dangerous.
    • Clogged Air Filter: A dirty air filter restricts airflow to the engine, reducing power.
    • Spark Plug Issues: A fouled or worn spark plug can cause misfires and power loss.
    • Fuel Delivery Problems: Similar to hard starting, fuel delivery issues can also lead to power loss.
    • Compression Issues: Worn piston rings or valves can cause a loss of compression, resulting in reduced power.

Electrical Gremlins: When Things Don't Light Up

Electrical problems can be particularly tricky to diagnose. Here are some common electrical issues reported by Ace 570 owners:

  • Battery Drain: A parasitic draw can drain the battery, especially when the machine is not in use.
    • Faulty Wiring: Damaged or corroded wiring can cause shorts and drain the battery.
    • Accessories: Aftermarket accessories, such as lights or stereos, can draw power even when the machine is off.
    • Stator Issues: The stator charges the battery while the engine is running. A faulty stator may not properly charge the battery, leading to a drain.
  • Faulty Sensors: Modern ATVs rely on numerous sensors to monitor engine performance.
    • Throttle Position Sensor (TPS): A faulty TPS can cause erratic engine behavior.
    • Crankshaft Position Sensor (CPS): A bad CPS can prevent the engine from starting.
    • Coolant Temperature Sensor (CTS): A faulty CTS can lead to incorrect fuel mixture and overheating.
  • Lighting Issues: Headlights, taillights, and brake lights can fail due to various reasons.
    • Blown Bulbs: The most common cause of lighting issues is a blown bulb.
    • Wiring Problems: Damaged or corroded wiring can also cause lighting problems.
    • Faulty Switches: A bad switch can prevent the lights from turning on.

Transmission Troubles: Shifting Problems and More

The transmission is responsible for transferring power from the engine to the wheels. Here are some common transmission-related issues:

  • Difficulty Shifting: Shifting between gears can become difficult or impossible.
    • Worn Shift Linkage: The shift linkage can become worn or damaged, making it difficult to engage gears.
    • Clutch Problems: A worn or damaged clutch can also cause shifting problems.
    • Low Transmission Fluid: Check the transmission fluid level and add fluid if necessary.
  • Belt Slippage: The CVT (Continuously Variable Transmission) belt can slip, especially under heavy load.
    • Worn Belt: A worn belt will not grip the clutches properly.
    • Contaminated Belt: Oil or water on the belt can cause it to slip.
    • Clutch Issues: Worn or damaged clutches can also contribute to belt slippage.
  • Unusual Noises: Grinding or whining noises from the transmission can indicate serious problems.
    • Worn Gears: Grinding noises often indicate worn gears.
    • Bearing Problems: Whining noises can be a sign of worn bearings.

Suspension Concerns: A Bumpy Ride

The suspension is crucial for a comfortable and controlled ride. Here are some common suspension-related issues:

  • Worn Bushings: Bushings are used to cushion the suspension components and reduce vibration. Worn bushings can cause excessive play and noise.
  • Leaking Shocks: Shocks are responsible for damping the suspension movement. Leaking shocks will not perform properly.
  • Broken Springs: Springs provide support and absorb impacts. Broken springs can compromise the vehicle's handling.
  • Bent A-Arms: A-arms connect the wheels to the frame. Bent A-arms can affect the vehicle's alignment and handling.

Other Annoyances: Little Things That Add Up

Beyond the major systems, some owners have reported other minor issues:

  • Rust: Rust can be a problem, especially in areas with harsh weather conditions. Regularly wash and wax your Ace 570 to prevent rust.
  • Plastic Cracking: The plastic body panels can be prone to cracking, especially in cold weather.
  • Seat Wear: The seat can wear out quickly, especially with frequent use.

How to Troubleshoot Your Ace 570

Here's a step-by-step approach to diagnosing and addressing common Ace 570 problems:

  1. Gather Information: Before you start wrenching, gather as much information as possible. Talk to other owners, read online forums, and consult the service manual.
  2. Visual Inspection: Start with a thorough visual inspection. Look for any obvious signs of damage, such as leaks, cracks, or broken parts.
  3. Listen Carefully: Pay attention to any unusual noises coming from the engine, transmission, or suspension.
  4. Check Fluids: Check the oil, coolant, transmission fluid, and brake fluid levels.
  5. Use a Multimeter: A multimeter is an essential tool for diagnosing electrical problems. Use it to check voltage, continuity, and resistance.
  6. Use a Scan Tool: For more complex issues, a scan tool can read diagnostic trouble codes (DTCs) and provide valuable information about the problem.
  7. Consult a Professional: If you're not comfortable working on your Ace 570, consult a qualified mechanic.

Preventing Problems: A Little Maintenance Goes a Long Way

Preventive maintenance is key to keeping your Ace 570 running smoothly and avoiding costly repairs. Here are some essential maintenance tasks:

  • Regular Oil Changes: Change the engine oil and filter according to the manufacturer's recommendations.
  • Air Filter Cleaning: Clean or replace the air filter regularly.
  • Spark Plug Replacement: Replace the spark plug at the recommended intervals.
  • Coolant Flush: Flush the cooling system every two years.
  • Belt Inspection: Inspect the CVT belt for wear and damage.
  • Grease Fittings: Grease all the grease fittings regularly.
  • Tire Pressure: Maintain the correct tire pressure.
  • Battery Maintenance: Keep the battery clean and charged.
  • Storage: If you're storing your Ace 570 for an extended period, take steps to protect it from the elements. Use a fuel stabilizer, disconnect the battery, and cover the machine.

Frequently Asked Questions

  • Why is my Ace 570 hard to start? This could be due to a weak battery, a clogged fuel filter, or valve adjustment issues. Check these areas for problems.
  • What causes the Ace 570 to overheat? Overheating can be caused by coolant leaks, a clogged radiator, or a faulty thermostat. Inspect the cooling system.
  • Why is my Ace 570 losing power? A clogged air filter, a fouled spark plug, or fuel delivery problems can cause power loss. Check the air filter and spark plug first.
  • How often should I change the oil in my Ace 570? Change the oil every 25 hours of operation or every six months, whichever comes first. Use the manufacturer's recommended oil.
  • What type of battery does the Ace 570 use? The Ace 570 typically uses a YTX20L-BS type battery. Confirm the correct battery type in your owner's manual.

Keeping Your Ace 570 Ace-High

The Polaris Ace 570, like any machine, can experience its share of problems. By understanding the common issues, performing regular maintenance, and troubleshooting effectively, you can keep your Ace 570 running smoothly for years to come. Remember, a proactive approach to maintenance is the best way to prevent problems before they arise.