How to Change the Coolant on a 2022 Yamaha TW200: MotoSport Guide

Shop parts for a 2022 Yamaha TW200 Dirt Bike.

The Yamaha TW200 is renowned for its rugged reliability and all-terrain versatility, but routine coolant changes are essential to keep your engine protected and performing at its peak. Below you will find step-by-step, MotoSport-exclusive instructions tailored for owners of the 2022 TW200, along with some important model-specific notes every rider should know before tackling this maintenance job.

What Makes the 2022 TW200 Unique?

The TW200 uses a compact air/oil-cooled engine, with its cooling system integrated through both oil and minimal liquid coolant passages. While changing the coolant is a periodic requirement, its relatively small capacity and rugged design mean the process is straightforward, but attention to detail is a must to avoid trapped air pockets and ensure consistent operation.

What You Need

  • Gloves and eye protection
  • Drain pan
  • Fresh coolant (Yamaha-approved or high-quality motorcycle coolant)
  • Funnel
  • Basic hand tools (wrench/socket set, screwdrivers)
  • Clean rags

Step-by-Step Coolant Change Instructions

1. Preparation – Safety First

Ensure the engine is completely cool before beginning. Hot coolant can cause severe burns.
Work in a well-ventilated area and protect painted surfaces from coolant spills—coolant is highly corrosive to paint.

2. Remove the Radiator Cap

Remove any covers or bodywork blocking access to the radiator cap. Place a rag over the cap and slowly twist to the first stop to vent pressure—wait until any hissing stops, then remove it fully.

3. Drain the Old Coolant

Locate the coolant drain bolt or plug (usually at the base of the water pump). Position your drain pan underneath, then carefully loosen and remove the bolt or plug. Allow all coolant to drain completely.
For best results, tilt the bike upright to help residual coolant exit the system. Always dispose of used coolant responsibly.

4. Inspect and Flush (Optional, but Recommended)

To remove old residue, flush the system using distilled water or a 50/50 mix of vinegar and distilled water. Pour in, run the engine briefly, shut off, and drain again. Repeat with just distilled water until clear.
Never use harsh chemical flushes on the TW200, as its compact passages are sensitive to residue.

5. Replace Drain Bolt – Use a New Washer

Inspect or replace the sealing washer on the drain bolt before reinstalling. Finger-tighten by hand, then torque correctly per the manual. Overtightening can strip threads—be cautious.

6. Add Fresh Coolant

Using a funnel, slowly pour pre-mixed coolant into the radiator neck. Pause periodically and gently squeeze the radiator hoses or rock the bike to dislodge any trapped air.
Fill until coolant rises to the base of the filler neck. If your TW200 has an expansion or overflow tank, top it up to the upper level mark.

7. Bleed Air & Finalize

Leave the cap off, start the engine, and let it idle. Briefly rev the engine while monitoring coolant movement. Watch for air bubbles to rise—this indicates trapped air is leaving the system.
Once bubbling stops, shut off the engine, allow it to cool, and top up coolant as needed.
Reinstall and tighten the radiator cap securely.

8. Check & Test

Start and bring the engine to operating temperature—the radiator fan should cycle at least once. Let the engine cool completely, then re-inspect coolant levels at both filler neck and expansion tank. Add coolant if needed.
If the coolant level in the reservoir drops after riding, top it off. Continuous dropping may indicate a leak or persistent air pocket.

Model-Specific Tips for the TW200

  • Be alert for air pockets—the TW200's compact cooling passages can trap air. Take extra time in the filling and bleeding steps.
  • Use only coolant compatible with Yamaha specs. Mixing types may cause damage or deposits.
  • Always inspect hoses and clamps for wear or leaks during this process and replace as necessary.
  • Keep the radiator fins clean and free of mud or debris for optimal cooling, especially if you ride off-road.

With the right approach and these TW200-specific insights, you can keep your bike running cool and dependable for years to come. As always, refer to your owner's manual for torque specs and coolant capacity, and never operate your bike with insufficient coolant or loose fittings.

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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.