How to Change the Coolant in a 2026 Beta 350 RS
Shop parts for a 2026 Beta 350 RS Dirt Bike.
Regular coolant changes are crucial to your 2026 Beta 350 RS’s performance and engine longevity. Keeping the cooling system in top shape prevents overheating on aggressive rides and extends the lifespan of internal components. Use this MotoSport proprietary step-by-step guide for the safest and most effective procedure.
What You’ll Need
- Coolant recommended by Beta for your model (see owner’s manual for specific type)
- Drain pan
- Socket set
- Protective gloves and eyewear
- Rags or shop towels
- Torque wrench (recommended)
Key Tips for the 2026 Beta 350 RS
- Your 350 RS features a 1.3-liter coolant capacity for effective temperature management even in demanding conditions.
- No dedicated radiator bleed screws – the system self-bleeds, but verify air pockets are gone as outlined below.
- Never remove the radiator cap when the engine is hot—always allow the powerplant to fully cool to avoid burns.
- Check that radiator fins are clear of debris and not bent after coolant changes for optimal airflow.
Coolant Change Procedure
- Safety First: Let the engine fully cool. Wear gloves and eye protection. Keep coolant away from kids and pets. Coolant is toxic—read labels and follow disposal regulations strictly.
- Remove Engine Protection: Position the bike upright. Detach the engine protection plate (use appropriate socket or Allen wrench) and set aside.
- Open Radiator Cap: Slowly unscrew the radiator filler cap to relieve any residual pressure (only when cold).
- Locate & Remove Drain Screw: Find the drain screw at the lower side of the water pump or engine. Place a drain pan below, then remove the screw and any sealing washer to let coolant fully drain.
- Reinstall Drain Screw: Once draining is complete, replace the drain screw with its washer and tighten it to factory torque spec (check your manual, typically about 10 Nm).
- Refill System: Pour the correct coolant into the radiator neck. Fill only until coolant covers the tops of the internal radiator fins but stays at least a half inch below the filler neck lip to prevent overflow during engine operation.
- Remove Air: With the radiator cap still off, briefly start the bike and let it run a few minutes. Watch for bubbles—this indicates air is escaping the system. Shut off, top up coolant as needed, then install the cap.
- Final Checks: Inspect for leaks and ensure the drain screw and radiator cap are secure. Replace engine protection plate and seat. After the first ride, verify coolant level again and top up if needed.
Additional Notes for 2026 350 RS Owners
- The Beta 350 RS is engineered for flexibility—from trail to dual-sport adventure. Coolant cleanliness directly impacts real-world power delivery and reliability, especially on rugged rides.
- Factory fill is typically a long-life coolant compatible with magnesium and aluminum engine parts. Only use blends specified by Beta to avoid corrosion or seal damage.
- Check your coolant annually and flush every one to two years, or sooner if contamination is visible or after heavy racing.
Changing your coolant regularly on the 2026 Beta 350 RS is a simple but key maintenance item—keeping you cool and your engine safer year-round.
Related Shopping Categories
Shop Radiators for a 2026 Beta 350 RS Dirt Bike.
Shop Coolant for a 2026 Beta 350 RS Dirt Bike.
Shop Temperature Sensors for a 2026 Beta 350 RS Dirt Bike.
Shop Tools for a 2026 Beta 350 RS Dirt Bike.
Shop Radiator Hoses for a 2026 Beta 350 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.
