How to Change the Coolant in a 2018 Beta 350 RR-S
Shop parts for a 2018 Beta 350 RR-S Dirt Bike.
Regularly changing the coolant in your 2018 Beta 350 RR-S is essential for optimal engine cooling and longevity, especially for off-road riding conditions. Here is a step-by-step guide tailored specifically for this model and key points every owner should know.
Preparation – What You Need
- Fresh, recommended motorcycle coolant (consult your owner's manual for the correct spec; most pre-mixed coolants work well for this application)
- Basic hand tools (screwdrivers, socket set, pliers)
- Protective gloves and eyewear
- Collection pan for old coolant
- Clean rags or paper towels
Safety Tips and Beta 350 RR-S Specific Notes
- Work only on a cold engine: The 350 RR-S cooling system is pressurized. Never remove the radiator cap when hot to avoid burns and coolant spray.
- Coolant is toxic – keep out of reach of children and animals. Clean spills promptly and dispose of old coolant responsibly.
- Beta recommends wearing gloves to avoid skin contact, and washing with soap and water if exposure occurs.
- This engine holds just over 1 liter of coolant. Always use the recommended type for this model for aluminum compatibility and max cooling efficiency.
Step-by-Step Coolant Replacement Process
- Remove Skid Plate/Engine Casing:
Use the appropriate tools to remove the engine protection plate or skid plate for easier access to the coolant drain bolt and water pump area. - Open the Radiator Cap:
Ensure the engine is cold. Slowly unscrew the radiator cap to release any residual pressure. - Locate and Remove the Coolant Drain Bolt:
Place your drain pan beneath the engine, locate the coolant drain screw (usually on the lower portion of the water pump), and unscrew it to allow all coolant to drain out.
Tip: Some owners remove both the drain bolt and the lower radiator hose to ensure complete draining if the coolant is very dirty. - Reinstall the Drain Bolt:
After the flow slows to a drip, reinstall the drain bolt with its sealing washer and torque it to spec (refer to your manual, generally 10Nm for this model). - Refill with Fresh Coolant:
Add the correct coolant slowly into the radiator filler neck until it's just below the base of the filler neck. Squeeze the radiator hoses to help purge air bubbles as you fill.
If your model has a bleeder bolt near the thermostat housing, crack it open very briefly to help release trapped air, then retighten. - Bleed the Cooling System:
Reinstall the radiator cap, start the bike, and let it idle for several minutes to circulate coolant and purge more air. Shut the engine off and let it fully cool.
Recheck the level and top up if needed. - Inspect and Test-Ride:
Inspect around the drain bolt and hose connections for leaks. Refit the skid plate. Test-ride and monitor coolant level after the engine is cool again for the next couple of rides. Topping off may be necessary as small air pockets work their way out.
Extra Tips for the 2018 Beta 350 RR-S Owner
- Check radiator fins regularly for bends or debris, especially after muddy or sandy rides, as this can affect cooling performance.
- The coolant level should always be checked with the engine cold and the bike upright.
- If you ride in extreme heat or high-load terrain, inspect the coolant more frequently and consider flushing annually.
Keeping your 2018 Beta 350 RR-S's cooling system fresh ensures reliable performance and prevents costly engine damage. Routine coolant changes are a simple but vital process for long-term enjoyment on any trail or track.
Related Shopping Categories
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Shop Radiator Hoses for a 2018 Beta 350 RR-S 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.