The Polaris Sportsman 570 is a workhorse of the ATV world, known for its reliability and versatility. However, like any machine, it has its quirks, and one of the most common frustrations for owners is issues with the shifter knob. A loose, broken, or difficult-to-operate shifter knob can not only be annoying but also potentially dangerous, hindering your ability to quickly and safely change gears on the trail or job site.

Why is My Sportsman 570 Shifter Knob Acting Up? The Usual Suspects

Let's face it: your ATV isn't living a pampered life. It's getting bumped, jostled, and exposed to the elements. These harsh conditions are major contributors to shifter knob woes. Here are the most frequent culprits behind a malfunctioning shifter knob on your Polaris Sportsman 570:

  • Wear and Tear: This is the most obvious and unavoidable cause. Over time, the plastic components of the shifter knob can degrade due to constant use, UV exposure, and temperature fluctuations. This leads to cracks, looseness, and eventual breakage.

  • Loose Fasteners: The shifter knob is typically held in place by a screw or set of screws. Vibration is an inherent part of ATV operation, and this vibration can cause these fasteners to loosen over time. A loose fastener allows the knob to wobble, feel unstable, and eventually strip the threads, making it even harder to tighten.

  • Stripped Threads: Speaking of stripped threads, this is a common consequence of over-tightening a loose fastener or simply from repeated assembly and disassembly. Once the threads are gone, the shifter knob will no longer stay securely attached.

  • Damage from Accidents or Impacts: Let's be honest, accidents happen. Even a minor bump against a tree or rock can put stress on the shifter knob and its mounting point, leading to cracks or breakage.

  • Corrosion: If you frequently ride in wet or muddy conditions, corrosion can become a factor. Rust can form on the metal components of the shifter mechanism, making it difficult to shift and potentially damaging the shifter knob itself.

  • Internal Cable Issues: While the shifter knob itself might seem like the problem, sometimes the issue lies deeper within the shifting mechanism. A stretched or damaged shift cable can make it difficult to engage gears, leading you to put excessive force on the shifter knob, which can then cause it to fail.

Diagnosing the Problem: Is It Really the Shifter Knob?

Before you start tearing things apart, it's crucial to accurately diagnose the problem. Here's a simple checklist to help you pinpoint the source of your shifting woes:

  1. Check for Obvious Damage: Visually inspect the shifter knob for cracks, breaks, or missing pieces. Is it loose and wobbly? Can you move it around significantly without it actually shifting gears?

  2. Inspect the Fasteners: Locate the screw(s) that hold the shifter knob in place. Are they loose? Can you tighten them? If they just spin without tightening, you likely have stripped threads.

  3. Observe Shifting Action: Does the shifter move smoothly through all the gears? Or does it feel stiff, sticky, or difficult to engage certain gears? If shifting is difficult even with a seemingly intact shifter knob, the problem may lie in the shift cable or internal transmission components.

  4. Listen for Unusual Noises: Do you hear any grinding, clicking, or popping sounds when you shift gears? These noises can indicate a problem with the transmission or shift linkage.

  5. Consider the History: Has the shifter knob been getting progressively worse over time, or did the problem appear suddenly after a specific incident? This information can help you narrow down the cause.

The Fix is In: Solutions for Common Shifter Knob Problems

Once you've identified the problem, it's time to take action. Here are some common solutions for the most frequent Sportsman 570 shifter knob issues:

  • Tightening Loose Fasteners: This is the easiest fix, and often the first thing you should try. Locate the screw(s) holding the shifter knob in place and tighten them securely. Be careful not to over-tighten, as this can strip the threads. If the screws are corroded, consider replacing them with new ones. A dab of thread-locking compound (like Loctite) can help prevent them from loosening again.

  • Replacing a Stripped Shifter Knob: If the threads are stripped, you'll need to replace the shifter knob. Fortunately, replacement knobs are readily available online and at most ATV parts stores. Make sure you purchase a knob that is specifically designed for your Polaris Sportsman 570 model.

  • Repairing Stripped Threads: If the threads in the shifter shaft itself are stripped, you have a couple of options:

    • Thread Repair Kit: A thread repair kit (like a Heli-Coil kit) allows you to install a new, stronger thread insert into the existing hole. This is a more involved repair, but it can save you from having to replace the entire shifter shaft.
    • Oversized Screw: In some cases, you may be able to use a slightly larger screw to create new threads in the shifter shaft. However, this should only be attempted if the existing hole is not too badly damaged.

  • Replacing a Broken Shifter Knob: If the shifter knob is cracked or broken, the best solution is to replace it. Again, make sure you purchase a replacement knob that is compatible with your Sportsman 570.

  • Addressing Corrosion: If corrosion is the problem, clean the shifter mechanism thoroughly with a wire brush and a rust-penetrating lubricant. Apply a protective coating of grease or anti-seize compound to prevent future corrosion.

  • Adjusting or Replacing the Shift Cable: If shifting is difficult even with a good shifter knob, the problem may be a stretched or damaged shift cable. The shift cable can often be adjusted to compensate for stretching. However, if the cable is badly damaged, it will need to be replaced. This is a more complex repair that may require professional assistance.

Upgrading Your Shifter Knob: Options for Enhanced Performance and Style

While you're addressing your shifter knob problems, consider upgrading to a more durable or ergonomic option. Several aftermarket shifter knobs are available for the Polaris Sportsman 570, offering improved grip, durability, and aesthetics.

  • Aluminum Shifter Knobs: Aluminum shifter knobs are significantly more durable than the factory plastic knobs. They can withstand more abuse and are less likely to crack or break.

  • Ergonomic Shifter Knobs: Ergonomic shifter knobs are designed to fit comfortably in your hand, reducing fatigue during long rides. They often feature textured surfaces for improved grip.

  • Custom Shifter Knobs: If you want to add a personal touch to your ATV, you can find custom shifter knobs in a variety of styles and materials.

Preventing Future Problems: Proactive Maintenance Tips

Prevention is always better than cure. Here are some tips to help you prevent future shifter knob problems on your Polaris Sportsman 570:

  • Regularly Inspect the Shifter Knob: Check the shifter knob for looseness, cracks, or other signs of damage during your regular ATV maintenance checks.

  • Tighten Fasteners Periodically: Periodically check the tightness of the shifter knob fasteners. Use a dab of thread-locking compound to prevent them from loosening.

  • Lubricate the Shifter Mechanism: Keep the shifter mechanism lubricated with a silicone-based lubricant to prevent corrosion and ensure smooth shifting.

  • Avoid Excessive Force: Be gentle when shifting gears. Avoid forcing the shifter, as this can damage the shifter knob and the shift mechanism.

  • Protect Your ATV: Store your ATV in a covered location to protect it from the elements.

Frequently Asked Questions

  • Why is my shifter knob so loose? The most common cause is loose fasteners. Check the screws holding the knob in place and tighten them.

  • How do I remove the shifter knob? Usually, there is a screw (or screws) holding it in place. Remove the screw(s), and the knob should pull straight off.

  • Can I use any shifter knob on my Sportsman 570? No, you need a shifter knob specifically designed for your Polaris Sportsman 570 model to ensure proper fit and function.

  • My shifter is hard to move, is it the knob? It could be, but it's more likely a problem with the shift cable or internal transmission components. Have a mechanic inspect the entire shifting system.

  • Where can I buy a replacement shifter knob? You can find replacement shifter knobs online (Amazon, eBay) or at most ATV parts stores.

One Last Shift

Addressing shifter knob problems on your Polaris Sportsman 570 doesn't have to be a daunting task. By understanding the common causes, accurately diagnosing the issue, and following the appropriate repair steps, you can get your ATV back in top shifting condition in no time. Remember, a little preventative maintenance goes a long way in keeping your shifter knob (and your entire ATV) running smoothly for years to come.