How to Change the Coolant in a 2013 Beta 350 RS SM

Shop parts for a 2013 Beta 350 RS SM Dirt Bike.

Changing the coolant in your 2013 Beta 350 RS SM ensures optimum engine performance, cooling efficiency, and system longevity. While Beta motorcycles follow general dirt bike coolant service principles, the 350 RS SM is known for its distinctive Italian engineering – precision machining and high-quality radiators. Pay close attention to the filling/bleeding process as this model uses a traditional radiator cap and may require special care to expel air from the system.

What You Will Need

  • Fresh, compatible coolant (pre-mixed or distilled water + coolant concentrate)
  • Metric socket set or screwdriver
  • Catch pan for old coolant
  • Clean rags
  • Protective gloves & eye protection

Steps to Change Coolant on a 2013 Beta 350 RS SM

  1. Prepare the Motorcycle
    • Ensure the bike is completely cool.
    • Secure the bike on a stand or flat surface.
    • Remove both radiator shrouds for easier access.
  2. Drain Old Coolant
    • Place your catch pan beneath the water pump.
    • Locate and remove the radiator cap.
    • Remove the coolant drain bolt, usually found near the base of the water pump cover. Allow all coolant to drain.
    • Inspect coolant for any debris or discoloration, which may signal an internal issue.
  3. Flush (Optional but Recommended)
    • Briefly reinstall the drain bolt and use distilled water to flush the system. Rotate the engine by hand if possible to circulate water, then drain again. Repeat if old coolant was especially dirty.
  4. Refill with New Coolant
    • Reinstall and torque the drain bolt to factory spec.
    • Slowly pour new coolant into the radiator until you see it near the top of the filler neck. The Beta 350 RS SM typically has a radiator cap directly on the right radiator — fill as specified in the manual, just above the core fins, but not overflowing.
    • Gently rock the bike side to side and lightly squeeze the coolant hoses. This helps release trapped air from the system.
    • If your model year does not have a bleeder screw (most 2013s do), rocking the bike works well. If equipped, open the bleeder screw on the right radiator to vent air then close when coolant begins seeping out.
  5. Final Steps
    • Install the radiator cap securely.
    • Start the engine for 30–60 seconds, with the radiator cap off, to circulate coolant. Watch for large air bubbles escaping and add more coolant if the level drops.
    • Shut off the engine, let it cool, and check the coolant level again. Top off as necessary.
    • Replace the radiator cap and side panels.
  6. Check for Leaks & Test Ride
    • Inspect all seams and hoses for leaks while the bike idles and after a short test ride.
    • After the bike has fully cooled, re-check the coolant level and reservoir. Top off if needed.

Model-Specific Tips for the 2013 Beta 350 RS SM

  • This Beta features aluminum radiators that are vulnerable to impact; always inspect for bent fins or cracks when changing coolant.
  • Take care not to overfill. Correct coolant level is just above the radiator core. Overfilling can cause spillage out the overflow and potential mess during operation.
  • Recommended coolant intervals: every 1–2 seasons, or annually if riding hard or in muddy conditions. The Beta's robust cooling system is durable but benefits from regular flushes to prevent overheating.
  • If the bike displays persistent low coolant or overheating, inspect the water pump and gaskets for integrity.

Environmental & Disposal Notes

  • Never pour old coolant down the drain or onto the ground. Dispose of it at an approved recycling location.

Conclusion

Routine coolant changes are essential for your Beta 350 RS SM's performance and reliability. These steps will keep your Italian dirt bike running cool, whether you're ripping up trails or cruising city streets.

Related Shopping Categories

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Shop Temperature Sensors for a 2013 Beta 350 RS SM Dirt Bike.

Shop Tools for a 2013 Beta 350 RS SM Dirt Bike.

Shop Radiator Hoses for a 2013 Beta 350 RS SM Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.