How to Change the Coolant in a 2009 Yamaha TW200

Shop parts for a 2009 Yamaha TW200 Dirt Bike.

Keeping your 2009 Yamaha TW200 running strong means maintaining all vital fluids, including the coolant. This bike relies on a liquid-cooled engine system that requires fresh coolant to regulate engine temperature and prevent overheating. A proper coolant swap not only prolongs component life but also protects against corrosion and damaging mineral buildup.

What You Will Need

  • Socket wrench or combination wrench
  • Drain pan for used coolant
  • New coolant (Yamaha recommends ethylene glycol-based, silicate-free coolant premixed with distilled water)
  • Funnel
  • Distilled water (optional, for a quick flush)
  • Replacement crush washer (for the drain bolt, if needed)
  • Gloves and basic safety gear

Step-by-Step Guide

  1. Let the engine cool down completely. Working with a hot engine or cooling system can lead to burns or pressurized fluid spray.
  2. Remove the seat and side panels if necessary. On the TW200, access to the radiator cap and drain bolt may require removing the seat and left side panel. Consult your owner's manual for component locations if uncertain.
  3. Open the radiator cap slowly. Relieve any residual pressure by gently turning the cap. Set it aside.
  4. Position a drain pan beneath the engine. Locate the coolant drain bolt on the bottom of the water pump. Loosen and remove the bolt, allowing the old coolant to fully drain. Inspect the old coolant for debris or discoloration–either can signal an overdue change or other maintenance issue.
  5. Flush (optional): Reinstall the drain bolt with a fresh washer, fill the system with distilled water, and run the bike briefly (just a minute or two, never overheating). Drain again to remove old residue and contaminants.
  6. Reinstall the drain bolt and washer. Make sure it is snug but not over-tightened.
  7. Slowly add new coolant to the radiator using a funnel. Fill all the way to the base of the filler neck to limit trapped air. Gravity feed helps prevent bubbles.
  8. Top up the reserve tank. Fill to the marked upper line on the reservoir tank, usually visible near the radiator or behind a side panel.
  9. Bleed air from the system. With the radiator cap off, start the engine and let it idle for two to three minutes. Gently rev to 4,000–5,000 RPM a few times to aid circulation and purge bubbles. Turn off the engine, allow it to cool, then check coolant level; top off if needed.
  10. Secure the radiator cap and reservoir tank cap. Reinstall bodywork and any panels or seats removed earlier.

Additional Tips for Yamaha TW200 Owners

  • The TW200's compact, air-cooled-like design means it runs hot–monitor coolant levels more frequently during hard trail use.
  • Always dispose of old coolant safely. Used coolant is toxic–take it to a recycling center or auto parts store for disposal.
  • Watch for coolant leaks or persistent level drops. These can indicate a worn water pump seal or hose–common concerns on an aging TW200.
  • Check all hoses and clamps during the swap. Replace anything with visible age, brittleness, or cracking.
  • If you ride in extreme cold, use coolant with adequate freeze protection as recommended in your owner's manual.

Regular coolant changes – every two years or 24,000 miles, whichever comes first – are crucial on the Yamaha TW200. Keeping your cooling system in peak condition ensures fun, trouble-free riding on both streets and trails.

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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.