How to Change the Coolant in a 2012 Beta 350 RR: A Complete MotoSport Guide

Shop parts for a 2012 Beta 350 RR Dirt Bike.

Maintaining your 2012 Beta 350 RR's cooling system will keep your engine running at peak performance in every ride. Coolant replacement is a key piece of routine maintenance, especially on older models, where build-up or degraded coolant can significantly impact reliability. This step-by-step guide covers exactly how to drain, flush, and refill your Beta 350 RR's coolant–along with tips specific to your model.

What You Will Need

  • Fresh, high-quality motorcycle coolant (1.3 liters for a full flush)
  • Drain pan
  • Basic hand tools (socket set, screwdrivers, pliers)
  • Rags or shop towels
  • Optional: Radiator flush solution
  • Protective gloves and eye protection

1. Preparation

  • Start with a completely cool engine to avoid burns.
  • Place the bike on a level surface using a stand for stability.
  • Remove the seat and shrouds surrounding the radiator to access the fill neck and side panels.

2. Draining the Old Coolant

  • Locate the drain screw near the bottom of the water pump or on the lower part of the right side radiator.
  • Place your drain pan below the drain screw and slowly remove the screw to let coolant flow out.
    Tip: Remove the radiator cap first to help the coolant drain more quickly.
  • Wait until coolant flow slows to a drip. Inspect the liquid for rust, debris, or an oily sheen, all of which can signal engine issues.

3. (Optional) Flushing the System

  • Reinstall the drain screw.
  • If you are using a flush, fill the system with clean water or a radiator flush solution to the filler neck (1.3L capacity).
  • Start the engine and run until it reaches normal temperature to open the thermostat. Shut the engine off and allow it to cool again.
  • Drain the system just as before.
  • Repeat with plain water if necessary to remove any remaining residue.

4. Refilling with Fresh Coolant

  • With the drain screw securely reinstalled, slowly fill the radiator with your chosen coolant up to the base of the filler neck.
  • On the 2012 Beta 350 RR, look for a small bleeder screw on the right radiator–this feature is specific to older models. Loosen this screw slightly as you fill to allow any trapped air to escape. When coolant escapes from the bleeder with no bubbles, tighten the screw.
  • Replace the radiator cap and side panels. Do not overtighten the cap–it should be firm but not forced.

5. Bleeding & Level Check

  • Start the engine and let it run until it's fully warm. Gently rock the bike side-to-side to help release any remaining air bubbles in the system.
  • After warming up, shut the engine off and let it cool completely–this pulls coolant from the overflow tank back into the radiator and lets you see if the level dropped.
  • Recheck coolant levels in both the radiator and the overflow tank; top off as needed. The radiator should be filled to the base of the filler neck, and the overflow tank (if equipped) should not exceed its maximum line.

Beta 350 RR Model-Specific Notes

  • The 2012 Beta 350 RR's cooling system holds 1.3 liters of coolant when fully empty–do not overfill.
  • This year/model includes a bleeder screw on the right radiator, important for proper air removal. Newer Betas do not feature this bleeder screw–take advantage of it for a perfect fill.
  • Beta recommends changing coolant at least once a year for consistent protection, and always after any radiator or pump service.
  • Always use motorcycle-specific, silicate-free coolant to prevent corrosion or premature seal wear.

Final Checks

  • Inspect the system for leaks after your first ride and recheck levels after engine cool-down.
  • Dispose of old coolant safely–it is toxic to people, pets, and the environment.
  • Keep a small bottle of the correct pre-mixed coolant on hand for occasional top-ups, as minor losses can occur over time.

Whether you're prepping for a race or ensuring your Beta's long-term health, a well-maintained cooling system is a must. For replacement parts, gaskets, new hoses, or upgraded radiators, trust MotoSport to stock all 2012 Beta 350 RR cooling system products at competitive prices.

Related Shopping Categories

Shop Radiators for a 2012 Beta 350 RR Dirt Bike.

Shop Coolant for a 2012 Beta 350 RR Dirt Bike.

Shop Temperature Sensors for a 2012 Beta 350 RR Dirt Bike.

Shop Tools for a 2012 Beta 350 RR Dirt Bike.

Shop Radiator Hoses for a 2012 Beta 350 RR 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.