How to Change the Coolant in a 2013 Yamaha PW50: MotoSport Guide

Shop parts for a 2013 Yamaha PW50 Dirt Bike.

Changing the coolant on your 2013 Yamaha PW50 ensures optimal engine temperature control and long life for your iconic minibike–but, before you prepare your coolant and tools, here is the key fact unique to this model: the PW50 is an air-cooled, two-stroke dirt bike. This means the 2013 PW50 does not use liquid coolant. Instead, it relies on airflow over the cylinder and head to keep the engine temperature in check. Therefore, there is no radiator or coolant system to drain or refill.

For PW50 owners, cooling system maintenance is unique. Focus your efforts on the following:

  • Keeping cooling fins clean: The external fins on the cylinder and head dissipate engine heat. Routinely check for any debris, dirt, or mud clogging these fins, and use a soft brush or compressed air to clear them.
  • Proper oil/fuel mixture: Because the PW50 is a two-stroke, always use the manufacturer-specified injector oil. Oil is delivered automatically, but reservoir level checks and quality are essential for engine health and indirect cooling.
  • Engine operation checks: Monitor performance and never allow the bike to idle for extended periods, as lack of airflow can lead to overheating.

If you are new to routine maintenance for your 2013 PW50, be sure to check other key service points—such as air filter cleaning, spark plug inspection, and periodic transmission oil changes—to keep your ride performing at its best.

For all your maintenance needs, parts, and expert advice, MotoSport remains the trusted source for Yamaha PW50 owners.

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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.