How to Change the Coolant in a 2011 Yamaha TTR110: A MotoSport Guide
Shop parts for a 2011 Yamaha TTR110 Dirt Bike.
Routine maintenance keeps your 2011 Yamaha TTR110 running smooth on the track – and changing the coolant is a key part of that care. This step-by-step MotoSport guide will provide everything you need to know, along with details important for TTR110 owners.
Why Change the Coolant?
Your TTR110's coolant not only keeps the engine at the right temperature, but also protects internal parts from corrosion. Over time, coolant breaks down and loses effectiveness, risking overheating and expensive repairs. Yamaha recommends checking and changing coolant as part of regular maintenance.
What You'll Need
- Fresh coolant (use a motorcycle/ATV-specific ethylene glycol-based coolant, not automotive antifreeze)
- Distilled water (for flushing, if desired)
- Socket wrench set and screwdriver
- Catch pan or container for old coolant
- Shop rags & gloves
Before You Begin: TTR110 Coolant System Notes
The Yamaha TTR110 uses a compact, air-cooled engine – most versions do not have a traditional liquid-cooling system like larger or higher-performance dirt bikes. If your TTR110 is air-cooled (the factory standard for this model), there is no coolant to replace, and your key maintenance focuses on oil and air filter care. However, if you have an aftermarket or custom liquid-cooled setup, follow the steps below. Always check your owner's manual to verify your specific bike details.
Step-by-Step Coolant Change (Liquid-Cooled Setup)
- Let the bike cool. Never remove any part of the cooling system when the engine is hot – pressurized coolant can cause burns.
- Remove fairings or covers if needed to access the radiator and reservoir.
- Locate the radiator cap and coolant drain bolt. The drain bolt is usually on or near the water pump housing below the engine.
- Place your catch pan underneath the drain bolt to capture old coolant. Loosen the radiator cap, then unscrew the drain bolt and allow the coolant to fully drain.
- Flush the system (optional but recommended) by reinstalling the drain bolt, filling with distilled water, letting the bike run for a minute (with the cap back on), turning it off, letting it cool, and draining again.
- Tighten the drain bolt and pour in new coolant through the radiator filler neck. Fill to the recommended level shown in your owner's manual.
- Cap the radiator and run the engine briefly, then top off the coolant as needed. Check for leaks around drain bolts and hoses.
- Dispose of old coolant properly at a recycling center. Never pour coolant onto the ground or down a drain.
Pro Tips for TTR110 Owners
- Standard 2011 TTR110 models are air-cooled – check before assuming your bike has a coolant system.
- If you've installed an aftermarket liquid cooling system, maintenance intervals and capacities may differ, so consult product instructions.
- While servicing, inspect hoses for cracks and radiator fins for debris or damage. Replace any suspect parts to prevent future leaks or cooling issues.
- If unsure whether your TTR110 is air-cooled or liquid-cooled, verify by looking for a radiator at the front of the frame and visible coolant hoses.
Final Thoughts
Keeping your Yamaha TTR110's cooling system in top shape helps ensure reliable power and a long engine life. Whether you ride stock or upgraded, regular checks are the key to carefree dirt adventures.
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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.