How to Change the Coolant in a 2014 Beta 400 RS
Shop parts for a 2014 Beta 400 RS Dirt Bike.
Keeping the cooling system of your 2014 Beta 400 RS in prime condition is critical for reliable performance both on and off road. For this model, Beta's tried-and-true liquid cooling system holds approximately 1.3 liters of coolant, utilizing 40 percent antifreeze to 60 percent watera mix recommended for reliable freezing protection to at least –25°C. The 400 RS, as part of Beta's renowned four-stroke lineup, features a bleeder screw on the top of the right radiator, a crucial detail for effective air removal unique to older Beta designs. Follow this proprietary MotoSport guide to properly change and refill your 2014 Beta 400 RS coolant.
What You Need
- New coolant (pre-mixed or 40 percent antifreeze/60 percent distilled water, totaling 1.3 liters)
- Socket set or screwdriver (to remove covers as needed)
- Drain pan
- Protective gloves and eyewear for safety
- Shop towel or rag
Steps to Change the Coolant
- Ensure the engine is cold. For safety, never remove the radiator cap when hot, as the system is under pressure and can cause burns.
- Access the radiators. Remove the seat and any radiator shrouds to expose the filler cap and radiator bodies.
- Locate the coolant drain bolt. On the 400 RS, the drain bolt is typically near the lowest point of the water pump cover.
- Place a drain pan under the engine. Remove the radiator cap slowly to release residual pressure, then unscrew the drain bolt. Allow coolant to drain completely.
- Open the right radiator bleeder screw. This is a unique step for this generation. Loosening the bleeder screw allows trapped air in the system to escape during refilling—helping you get a bubble-free fill.
- Flush (optional but recommended). Pour distilled water through the system and let it drain to flush out old residue. Repeat until the water runs clear.
- Reinstall and tighten the drain bolt. Be sure not to overtighten.
- Pour the new coolant into the radiator slowly. As you fill, you will see air and coolant escape from the bleeder screw. Tighten the screw once only coolant and no air bubbles emerge. Stop adding coolant once the level is just above the radiator's core fins.
- Gently rock the bike side to side. This helps move trapped air to the surface, a technique that works well with Beta radiators.
- Reinstall the radiator cap. Ensure the seal is clean, then tighten the cap securely.
- Start the engine and let it idle with the cap on. Let the engine reach operating temperature. Watch for bubbles or drops in coolant level at the overflow. Shut off and let the bike cool fully.
- Recheck the coolant level. Remove the cap once the bike is cold, top off if needed, and reinstall the seat and covers.
Notes & Owner Tips for the 2014 Beta 400 RS
- Using the correct coolant mixture maintains system corrosion resistance and optimal cooling in all riding conditions.
- The 400 RS features durable radiators but is older in design compared to modern Betas; always use the radiator bleeder screw during refills for best results.
- Inspect hoses and clamps for leaks during coolant service—replace if you see any wear or cracking.
- Dispose of used coolant according to local environmental regulations.
- Beta recommends annual coolant changes for optimal engine and component longevity.
Servicing your Beta's coolant is an easy maintenance step that protects your engine for seasons of adventure. MotoSport stocks the parts, coolant, and tools you need for your 2014 Beta 400 RS – shop with confidence for genuine fit and expert support.
Related Shopping Categories
Shop Radiators for a 2014 Beta 400 RS Dirt Bike.
Shop Coolant for a 2014 Beta 400 RS Dirt Bike.
Shop Temperature Sensors for a 2014 Beta 400 RS Dirt Bike.
Shop Tools for a 2014 Beta 400 RS Dirt Bike.
Shop Radiator Hoses for a 2014 Beta 400 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.
