How to Change the Coolant in a 2017 Beta 390 RR Race Edition
Shop parts for a 2017 Beta 390 RR Race Edition Dirt Bike.
Keeping your 2017 Beta 390 RR Race Edition running cool is crucial for both performance and longevity. This model, known for its nimble handling and a smooth, torque-rich 386cc engine, works best when the cooling system is properly maintained. A coolant change is a straightforward DIY task that prevents overheating, corrosion, and internal engine damage.
Before You Begin
- Work on a cold engine–never remove the radiator cap on a hot engine.
- Have a drain pan, rags, a funnel, a flathead screwdriver, and the correct fresh coolant (engineered for aluminum cooling systems).
- Consider picking up a new radiator cap and hoses if yours appear worn—see MotoSport's dedicated Shop parts for a 2017 Beta 390 RR Race Edition Dirt Bike. for options.
Step-by-Step Coolant Change Guide
- Remove the seat and right shroud to gain access to the right side radiator cap. The 2017 Beta 390 RR Race Edition uses tool-less fasteners, so you can typically do this by hand.
- Locate the radiator cap and drain bolt:
- The radiator cap is at the top of the right-side radiator.
- The factory drain bolt is usually found at the lowest point on the water pump cover (right side of the engine). Have your drain pan ready beneath this area.
- Remove the radiator cap slowly to release any residual pressure. Then remove the drain bolt and allow the coolant to fully drain into the pan.
- Flush (Optional but Recommended):
- Reinstall the drain bolt loosely. Pour clean water into the radiator, then start and idle the bike for a minute. Turn it off, drain the system again, and repeat until water runs clear.
- Reinstall and tighten the drain bolt to factory specification. Replace the washer if damaged to prevent leaks.
- Slowly fill the radiator with fresh, high-quality coolant formulated for dirt bikes with aluminum components. Fill to just below the bottom of the cap's fill neck.
- Bleed air from the cooling system:
- With the bike upright, gently squeeze and release the radiator hoses to help bubbles escape.
- Start the bike, let it idle briefly, and watch for the coolant level to drop. Shut off the engine, top-off as necessary, and repeat until the level remains steady.
- Replace the radiator cap securely.
- Check for leaks around the drain bolt, hoses, and cap area.
- Reinstall the shroud and seat.
2017 Beta 390 RR Race Edition: Essential Owner Notes
- Oil pump plastic gears: These should be inspected and replaced at regular intervals (often recommended at 100 hours) to prevent failure, a unique maintenance point for Beta models of this era.
- Lightweight & nimble: Riders appreciate this model's light handling compared to traditional 450cc off-road bikes–keep up with regular coolant and fluid changes to maintain its responsive feel and avoid heat fade on the trail.
- Torque-focused engine: The 390 uses a longer stroke for more grunt at low RPMs, but overheating can sap its low-end punch–routine cooling system service is critical to sustaining that power delivery.
- Cooling system service interval: Inspect coolant every 20 hours, replace every 2 years or more often if riding in harsh conditions or after water pump work.
Following these steps ensures your Beta 390 RR Race Edition's engine stays cool, powerful, and ready for wherever your adventure takes you.
Related Shopping Categories
Shop Radiators for a 2017 Beta 390 RR Race Edition Dirt Bike.
Shop Coolant for a 2017 Beta 390 RR Race Edition Dirt Bike.
Shop Temperature Sensors for a 2017 Beta 390 RR Race Edition Dirt Bike.
Shop Tools for a 2017 Beta 390 RR Race Edition Dirt Bike.
Shop Radiator Hoses for a 2017 Beta 390 RR Race Edition 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.