How to Change the Coolant in a 2013 Beta 350 RR

Shop parts for a 2013 Beta 350 RR Dirt Bike.

The 2013 Beta 350 RR features a 4-stroke, liquid-cooled engine that relies on an efficient cooling system for peak performance. Regular coolant changes are crucial to prevent engine overheating and maintain optimum function. Follow this step-by-step, MotoSport-exclusive guide for a proper coolant service – specifically tailored to your Beta 350 RR.

Preparation

  • Ensure the engine is cool before starting this process.
  • Secure the motorcycle on a level stand and remove the seat to expose the top of the radiator.
  • Gather required supplies: fresh coolant (1.3 liters), funnel, drain pan, a few shop rags, and a basic set of hand tools (including a socket set and screwdriver).

Draining the Old Coolant

  • Locate the coolant drain screw. On the Beta 350 RR, the drain is typically on the right side of the engine case near the water pump.
  • Position the drain pan under the screw to catch all used coolant.
  • Slowly loosen and remove the radiator cap to relieve pressure, then remove the drain screw completely. Let all coolant drain out.
  • Inspect the drained coolant for any signs of oil or debris. If contaminated, a further system flush may be advisable.

Flushing the System (Recommended)

  • To maximize system health, flush with distilled water before refilling.
  • Replace the drain screw, fill the radiator with distilled water, run the engine briefly, then drain again. Repeat if water appears cloudy.

Refilling with Fresh Coolant

  • Ensure the drain screw is securely reinstalled & torqued to spec.
  • Using a funnel, slowly pour high-quality coolant into the radiator until near the top of the filler neck. The Beta 350 RR takes approximately 1.3 liters.
  • Rock the bike side-to-side and gently squeeze radiator hoses to help air escape. This model does not have a radiator bleeder screw, so this step is vital for removing trapped air.

Final Steps – Bleeding the System

  • With the radiator cap still off, start the engine and let it idle for a few minutes. Watch for air bubbles escaping at the filler neck – top off coolant as needed.
  • Once bubbling stops and coolant level stabilizes, reinstall the radiator cap.
  • Run the engine until it reaches normal operating temperature, then shut it off and let it cool completely. Check coolant again at both radiator and reservoir; top off if necessary.

Key Tips for the 2013 Beta 350 RR Owner

  • This model requires close attention to air pockets during coolant refill since it lacks a dedicated bleeder screw.
  • OEM capacity is 1.3 liters – do not overfill.
  • Use only recommended (silicate- and phosphate-free) coolant to preserve seals and alloy components.
  • Check for leaks or weeping at hoses and water pump after your first post-service ride.
  • Annual coolant changes are advised for optimal durability, especially if ridden in harsh off-road conditions.

Following these steps will help keep your Beta's engine temps in check and its performance sharp for every ride.

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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.