How to Change the Coolant in a 2019 Yamaha TW200: Step-by-Step Guide

Shop parts for a 2019 Yamaha TW200 Dirt Bike.

Routine coolant changes are critical for keeping your 2019 Yamaha TW200's engine running efficiently and preventing costly damage due to overheating or corrosion. This model features Yamaha's air-cooled single-cylinder engine with a compact cooling system, so regular attention to coolant maintenance is especially important for optimal trail and street performance. Here’s a MotoSport-exclusive guide to changing your TW200’s coolant with points to consider specifically for this bike.

Tools and Materials You’ll Need

  • Yamaha-recommended coolant or compatible motorcycle coolant (consult your owner’s manual for specs)
  • Drain pan (minimum 3 liters recommended)
  • Ratchet set and sockets
  • Funnel and clean rags
  • Distilled water (if flushing)
  • Protective gloves

Preparation

  • Ensure the engine is completely cool before starting to avoid burns.
  • Park on a level surface using the center stand for stability.
  • Remove the seat and side panel for better access to the radiator cap and hoses.

Step 1: Locate the Coolant Drain Plug

The TW200's drain plug is typically found at the lowest point on the water pump cover or engine case. Place your drain pan beneath this plug to catch the old coolant.

Step 2: Drain the Old Coolant

  • Remove the radiator or coolant reservoir cap to relieve system pressure.
  • Carefully loosen and remove the drain plug and let the coolant flow completely into the pan.
  • If the coolant is dirty, corroded, or you don’t know its age, flush the system using a 50/50 mix of distilled water and vinegar. Run the engine until warm, then drain and flush again with plain distilled water before final draining.

Step 3: Reinstall the Drain Plug

  • Wipe the drain plug area clean and reinstall the plug securely.
  • Check your owner’s manual for the correct torque spec. Do not over-tighten.

Step 4: Add Fresh Coolant

  • Using a funnel, slowly pour fresh coolant into the radiator or reservoir up to the recommended fill line.
  • Gently squeeze the coolant hoses and rock the bike slightly to remove trapped air bubbles.
  • Let it sit for a few minutes to ensure air escapes, then top off if necessary.

Step 5: Burp the System and Final Level Check

  • Leave the cap off and start the engine, letting it idle until warm. Watch for new air bubbles escaping.
  • Shut off the engine and allow it to fully cool. Check and top off the fluid if needed, then securely replace the radiator or reservoir cap.
  • Inspect the reservoir tank and refill to the "full" mark.

Step 6: Inspect for Leaks & Perform a Test Ride

  • Examine all hoses and fittings for leaks.
  • After a short test ride, re-check the coolant level as it may drop slightly as remaining air works out of the system.
  • Add coolant if necessary to maintain proper levels.

Technical Notes for TW200 Owners

  • The 2019 TW200 utilizes a simple, robust cooling system, but off-road debris can block airflow, so check the radiator guard for obstructions during coolant maintenance.
  • Always use a coolant formulated for motorcycles—automotive coolants can contain silicates that may damage the water pump seal.
  • If your bike has been run hot or left sitting for extended periods, inspect the coolant for signs of oil or rust, which can indicate other issues requiring attention.

Changing the coolant on your Yamaha TW200 is straightforward and rewards you with enhanced reliability, especially for extended rides and variable terrain. Take care to dispose of old coolant safely according to local regulations, as it is toxic to people and pets.

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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.