How to Change the Coolant in a 2012 Beta 400 RR
Shop parts for a 2012 Beta 400 RR Dirt Bike.
Keeping your 2012 Beta 400 RR's cooling system in top shape ensures reliable performance and engine longevity. While coolant changes are a straightforward maintenance task, the 400 RR has unique aspects owners should keep in mind. Below is a proprietary MotoSport guide for draining, flushing, and refilling the cooling system on your 2012 Beta 400 RR.
What to Know About the Beta 400 RR
- Bleeder Screw Location – Important. Unlike some later models, the 2012 Beta 400 RR has a bleed screw on top of the right radiator. This allows you to easily release trapped air, ensuring a full coolant fill and preventing overheating issues particular to this generation.
- Coolant Volume: The system capacity is specified in the owner's manual (generally about 1 liter, but check your manual for your bike's specification).
- Radiator Construction: Use aluminum-safe, silicate-free coolant for maximum corrosion protection and performance.
Tools and Supplies
- Quality radiator coolant (premixed, silicate-free, suitable for aluminum radiators)
- Drain pan
- Socket set and necessary wrenches
- Rags or shop towels
- Funnel
- Gloves and eye protection
Step-by-Step Coolant Change Guide
-
Preparation
Move the bike to a stable, level surface and allow the engine to cool completely. Never open the radiator cap when hot–you risk severe burns from pressurized steam or boiling coolant. -
Drain the Old Coolant
- Remove the radiator cap slowly to release any built-up pressure after the bike is fully cool.
- Place a drain pan beneath the engine.
- Locate the coolant drain bolt, usually on the lowest point of the water pump cover. Carefully remove it and allow all coolant to drain.
- For a more complete flush, you can remove the lower radiator hose.
-
Flush the System (Optional but Recommended)
Add distilled water or a commercial radiator flush solution to the radiator. Reinstall the drain bolt temporarily, start the bike briefly (under a minute), and let the water circulate. Shut off, allow to cool, then drain again. Repeat until the drained water runs clear. -
Reinstall the Drain Bolt
Ensure the copper washer, if present, is in good condition. Re-install and tighten the drain bolt to the recommended torque. -
Add Fresh Coolant
Using a funnel, fill the radiator with the recommended coolant until it sits about 10mm above the radiator fins (visible with cap off and engine cold, per Beta guidelines). -
Bleed Air from the System
Open the bleed screw located at the top of the right radiator. As you fill, allow air to escape until coolant runs steadily out, then close the screw. -
Check and Top Off
With the radiator cap off, gently rock the bike side-to-side to release air bubbles. Top up coolant if needed. Reinstall radiator cap securely. -
Warm Up & Repeat Final Checks
Start the engine and let it run until up to full operating temperature (fan cycles, if equipped). Shut off and allow to cool fully, then check coolant again–top up as needed, also checking the overflow tank if present.
Maintenance Tips for the 400 RR
- Check coolant level before every ride–running low coolant can seriously damage your engine.
- Flush and replace coolant at least yearly for best performance and longevity.
- If you see repeated drops in coolant level with no visible leaks, have your 400 RR checked for possible head gasket or internal leaks–these engines are tough, but not immune.
Keeping your 2012 Beta 400 RR's coolant fresh is fast, easy, and effective with the right tools–and can save you time, money, and a fun ride out on the trail.
Related Shopping Categories
Shop Radiators for a 2012 Beta 400 RR Dirt Bike.
Shop Coolant for a 2012 Beta 400 RR Dirt Bike.
Shop Temperature Sensors for a 2012 Beta 400 RR Dirt Bike.
Shop Tools for a 2012 Beta 400 RR Dirt Bike.
Shop Radiator Hoses for a 2012 Beta 400 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.
