How to Change the Coolant in a 2019 Yamaha TTR110: A MotoSport Guide

Shop parts for a 2019 Yamaha TTR110 Dirt Bike.

Routine coolant maintenance is crucial for your 2019 Yamaha TTR110, helping ensure optimal engine temperature and performance, especially during hard moto sessions or summer trail rides. While the TTR110 is famously low-maintenance and air-cooled unlike most larger or race-spec bikes it's wise to periodically verify the contents and condition of the cooling system. Here's how to change and check the coolant system in your TTR110, along with essential owner tips for this pocket-size legend.

Understanding the TTR110 Cooling System

The Yamaha TTR110 has a straightforward air-cooled engine design, which means there is no traditional liquid coolant system, radiator, or coolant reservoir like on larger, liquid-cooled motocross and trail bikes. Engine heat is managed via airflow over cooling fins on the cylinder and head, making a coolant flush or change unnecessary. Instead, the maintenance focus should be on:

  • Cleaning mud and debris from the engine's cooling fins after rides.
  • Ensuring the engine oil is fresh and at the correct level (oil acts as a heat transfer, too).
  • Checking for signs of overheating, like oil discoloration, odd smells, or engine knocking.

What If I See "Coolant Change" in a Schedule?

Many generic service guides mention coolant changes for dirt bikes, but this applies to liquid-cooled models such as the YZ, WR, or competing brands, not the TTR110. Disregard any recommendations about coolant fluid for your TTR110 your attention should stay on air-flow, oil, and overall cleanliness.

Vital Owner Tips for Your 2019 TTR110

  • Fin Health: Always inspect and clean the cylinder head and barrel fins. Remove any caked-on mud or grass after each wash to preserve cooling efficiency.
  • Engine Oil: Replace engine oil at least every 20 hours of riding, or more frequently in dusty conditions. This keeps the engine well-lubricated and cooler during strenuous use.
  • Check Spark Plug and Air Filter: Restricted airflow impacts air cooling. A clean air filter and the correct spark plug gap allow your engine to breathe and cool down properly.

Final Thoughts

There's no coolant to drain, flush, or replace on a 2019 Yamaha TTR110. Focus on keeping the air-cooling paths clean and the oil fresh for reliable, smooth performance. Use only recommended engine oil and keep up with regular checks to maximize your TTR110's lifespan – and your fun on every ride.

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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.