How to Change the Coolant in a 2012 Beta 520 RS

Shop parts for a 2012 Beta 520 RS Dirt Bike.

Keeping the cooling system in top condition is crucial for your 2012 Beta 520 RS, ensuring optimal engine temperature regulation and reliable performance on and off the trail. Follow this proprietary MotoSport guide for a safe, effective coolant change tailored to the unique features of your Beta.

Why Change Your Coolant?

Coolant breaks down over time, losing its ability to protect your engine from overheating, corrosion, and freeze damage. Annual coolant changes are especially important on high-performance dirt bikes like the Beta 520 RS, which face demanding conditions and prolonged periods of heat and vibration.

Preparation – What You'll Need

  • New coolant (silicate-free, aluminum-compatible, pre-mixed or as directed by manufacturer specifications)
  • Clean container for old coolant collection
  • Basic hand tools (socket set or wrench for drain bolt and radiator cap)
  • Gloves and safety glasses
  • Funnel
  • Shop towels or rags

Step 1: Let the Engine Cool Down

Never remove the radiator cap while the engine is hot – wait until your Beta 520 RS is totally cool to avoid dangerous burns from pressurized steam or hot coolant. Always work in a well-ventilated area.

Step 2: Locate and Remove the Radiator Cap

Find the radiator cap on the left radiator under your tank shroud. Remove the cap to release any system pressure and allow air to help the system drain fully.

Step 3: Drain the Old Coolant

  • Place a drain pan under the water pump area (right side of the engine).
  • Remove the coolant drain bolt (usually located at the bottom of the water pump cover) using your wrench; be prepared for coolant flow.
  • If equipped, inspect or replace the crush washer on the drain bolt to ensure a leak-free seal during reassembly.
  • Allow all coolant to completely drain from the engine and radiators. Tilting the bike gently side-to-side can help evacuate any remaining fluid trapped in the system.

Step 4: Inspect and Flush (Optional but Recommended)

For best results, flush your cooling system to remove scale and contaminants. Pour distilled water into the radiator, reinstall the drain bolt, and run the engine for a minute with the radiator cap off. Shut off the bike, allow it to cool, then drain again. Repeat until the drained water is clear, and ensure all fluid is out before proceeding.

Step 5: Reinstall the Drain Bolt

Reinstall the drain bolt – torque to manufacturer's specification for the 520 RS (consult your service manual for the correct value, or use gentle hand-tightening with a snug fit if torque information is unavailable). Wipe away any spilled fluid.

Step 6: Add Fresh Coolant

  • Insert a funnel in the radiator fill neck and slowly pour coolant until it covers the radiator fins by about 10 mm (visible just below the cap opening).
  • Pause to let air escaping and top off as the level settles.
  • Do not overfill – the expansion chamber will allow some swelling as the bike heats up.

Step 7: Bleed the System – Remove Air Pockets

  • With the radiator cap off, briefly start and idle the engine. Watch for bubbles as trapped air escapes. Top up the level as needed.
  • When the coolant stabilizes at the fill neck and bubbles stop, install the radiator cap securely.

Step 8: Final Checks

  • After your first ride, let the engine cool and re-check coolant levels. Top off if required in both the radiator and the overflow reservoir.
  • Look for leaks around the drain bolt and cooling connections.

Model-Specific Tips for the 2012 Beta 520 RS

  • The cooling circuit capacity is approximately 1.3 liters (double-check owner's manual for confirmation).
  • Check that the radiator fins are immersed 10 mm below the fill neck with a cold engine.
  • Use silicate-free coolant only; silicates can damage the aluminum radiators used on Beta off-road models.
  • Annual coolant refreshes are strongly advised due to the bike's high-revving four-stroke engine and demanding off-road use.

Safe Disposal

Dispose of used coolant responsibly at authorized recycling centers. Never pour coolant down drains or onto the ground, as it is hazardous to the environment and pets.

Maintenance Reminders

  • Periodically inspect for wear, damage, or buildup in radiator hoses and the cap gasket. Replace components if you find swelling, cracking, or leaks.
  • Monitor your engine's temperature – any sudden rise may indicate trapped air or a leak after your coolant change.

Take pride in maintaining your 2012 Beta 520 RS.  A fresh coolant change is a simple step that ensures peak performance when you hit the trails.

Related Shopping Categories

Shop Radiators for a 2012 Beta 520 RS Dirt Bike.

Shop Coolant for a 2012 Beta 520 RS Dirt Bike.

Shop Temperature Sensors for a 2012 Beta 520 RS Dirt Bike.

Shop Tools for a 2012 Beta 520 RS Dirt Bike.

Shop Radiator Hoses for a 2012 Beta 520 RS 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.