How to Change the Coolant in a 2016 Yamaha TTR110
Shop parts for a 2016 Yamaha TTR110 Dirt Bike.
Changing the coolant in your 2016 Yamaha TTR110 helps ensure reliable engine performance and prevents overheating during trail rides. While the TTR110 uses a simple air-cooled system rather than a liquid-cooled radiator design, routine fluid checks and occasional changes (when applicable) are still part of responsible maintenance for all dirt bikes. If you have added aftermarket cooling upgrades, or if your TTR110 is fitted with a liquid-cooled cylinder head, follow the process below for coolant replacement.
What Owners Should Know About the 2016 Yamaha TTR110
- The TTR110 is factory-equipped with a four-stroke, air-cooled engine. Unlike most full-size motocross bikes, it does not have a standard liquid-cooled radiator system. Always consult your owner's manual and check for aftermarket modifications before attempting a coolant change. Some third-party performance kits may introduce coolant lines or small radiators.
- For stock air-cooled models: No standard coolant flush is needed. Instead, routine engine oil changes and proper airflow maintenance (clean air filter, unobstructed cooling fins) will ensure optimal engine temperature.
- If you have an aftermarket liquid-cooled head or kit installed: Continue with the following step-by-step guide.
Step-by-Step Coolant Change Guide (for Liquid-Cooled Upgrades)
- Allow the bike to cool completely before starting. This prevents burns from hot coolant or engine parts.
- Locate the radiator cap and drain bolt. If your TTR110 has a radiator, the cap is usually on top. The lowest drain bolt is often under the water pump housing or at the bottom of the radiator. Place a drain pan beneath the bolt.
- Remove body panels if needed for better access. Use the correct tools to avoid damaging fasteners.
- Loosen and remove the radiator cap, then the drain bolt. Allow all old coolant to drain fully into the pan. Dispose of old coolant responsibly; never pour it on the ground or into household drains.
- Rinse the system (optional but recommended for a thorough flush). Reinstall the drain bolt temporarily. Fill the system with distilled water never use tap water, as minerals can damage the system. Run the engine briefly (cap off), then drain again to flush out deposits and remaining old coolant.
- Install a new sealing washer if required, then reinstall and tighten the drain bolt.
- Refill with fresh coolant. Use the recommended motorcycle-specific coolant, pre-mixed or mixed 50/50 with distilled water. Fill to the top of the neck. Tighten the radiator cap when finished.
- Bleed (burp) the cooling system. Remove the cap, start the engine, and let it idle. Gently rock the bike or blip the throttle to release air bubbles. Top off the coolant as the level drops. When air stops escaping and the fluid level stabilizes, reinstall the cap securely.
- Check for leaks and test ride. Wipe down the system, start the engine, let it reach operating temperature, and check for coolant leaks. Inspect the fluid level once the engine cools and top off if needed.
Final Notes for TTR110 Owners
- Most maintenance for a stock 2016 TTR110 focuses on oil, air filter, and spark plug changes. If your bike's engine is air-cooled and unmodified, you do not need to replace coolant, but keep the cooling fins clean for efficient air flow.
- If you have a modified or liquid-cooled version, change coolant every two years, or more often if riding in harsh conditions or after overheating episodes.
- Use only the correct type of coolant for motorcycles, and never top up with tap water or automotive coolant, which may harm seals and metals.
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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.