How to Change the Coolant in a 2019 Beta 390 RR Race Edition
Shop parts for a 2019 Beta 390 RR Race Edition Dirt Bike.
If you own a 2019 Beta 390 RR Race Edition, keeping your cooling system in peak condition is critical for reliable performance. This guide provides a step-by-step process for changing the coolant, tailored specifically for your bike – ensuring efficient engine cooling and maximum longevity on the trail.
Preparation – Safety First
- Always perform coolant replacement with the engine completely cold. Never unscrew the radiator or filler caps when hot – doing so can cause severe burns.
- Wear appropriate gloves and eye protection, and immediately clean any coolant spills on skin or clothing.
- Place your Beta 390 RR Race Edition in a vertical, stable position on level ground.
Access the Coolant System
- Remove the engine casing by loosening the mounting screws as shown in your owner's manual for clear access to the radiator and drain hardware.
- Unscrew the radiator cap carefully to open the system to atmospheric pressure.
Drain the Old Coolant
- Position a suitable drain pan under the water pump area or lower radiator hose connection.
- Locate the coolant drain bolt (usually marked in the maintenance diagram or on the lower right of the engine casing), and unscrew it to allow old coolant to fully drain into your pan.
- On the 2019 Beta 390 RR Race Edition, you may need to loosen a second drain screw or a lower bleed screw to ensure complete evacuation of coolant. Dispose of old coolant in accordance with local regulations – never pour it down a drain or into the ground.
Refit Drain Hardware
- After the coolant has drained completely, inspect the drain bolt washer for wear or damage. Replace it if needed.
- Reinstall the drain bolt (and secondary drain/bleed screw if applicable), tightening to the manufacturer's recommended torque specification (typically around 10 Nm for casing bolts).
Add New Coolant
- Use only the recommended coolant type for your motorcycle – a premium, pre-mixed motorcycle coolant or as specified in your owner's manual. The correct amount is generally about 1.1 to 1.3 liters for this model, but double-check your manual.
- Slowly fill the system through the radiator neck until coolant is visible and stable below the rim. Rock the bike back and forth gently to help dislodge any trapped air bubbles.
- If your bike features a bleed screw on the cylinder head or radiator, loosen it slightly as you fill, then tighten it once coolant leaks from the port.
Final Steps – Bleeding Air and Reassembly
- With the cap off, briefly start and idle the engine (no more than a minute) to circulate coolant and purge air. Watch for bubbles escaping the radiator fill neck.
- Stop the engine, top off coolant if needed, and securely reinstall the radiator cap.
- Reinstall the engine casing or protective plate, ensuring all hardware is tightened to specified torque.
Notes for 2019 Beta 390 RR Race Edition Owners
- The 390 RR Race Edition uses a forced-liquid circulation cooling system driven by a dedicated pump, designed for lightweight, high-revving performance.
- Inspect your radiator hoses frequently for pinching or wear, which can cause overheating. Some owners report stock hoses can become pinched over time. Upgrading hoses during coolant service can prevent future issues.
- Never use plain water or automotive-only coolants; stick to motorcycle-specific, silicate-free coolants for optimal protection.
- Follow the manufacturer's service schedule. Annual coolant changes help prevent internal corrosion and overheating – key for the reliability of the high-compression Beta engine.
- After servicing, always double-check for leaks and monitor coolant levels closely after your first ride.
Keeping up with your Beta's cooling maintenance ensures confidence on every ride—whether racing or adventuring.
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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.