How to Change the Coolant in a 2013 GAS GAS EC 250: Step-by-Step Guide

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Changing the coolant on your 2013 GAS GAS EC 250 is essential to keep your engine operating at proper temperatures and extend component life. Follow these steps and learn model-specific maintenance tips for an efficient and safe coolant change.

What You Need

  • Fresh, high-quality motorcycle coolant designed for aluminum engines
  • Basic hand tools (socket set, pliers, flathead screwdriver)
  • Drain pan
  • Funnel
  • Clean rags
  • Safety gloves and eyewear

Step 1: Safety First

  • Ensure the bike is completely cool before beginning to avoid the risk of burns. Never open the radiator cap while the engine is hot—the cooling system is under pressure and may spray hot coolant if opened prematurely.

Step 2: Access the Cooling System

  • Position the bike upright on a stand.
  • Remove the seat and fuel tank, if necessary, to access the radiator filler cap and hoses.

Step 3: Drain the Old Coolant

  • Locate the coolant drain bolt on the water pump or lower radiator hose—common on the GAS GAS EC 250 two-strokes.
  • Place a drain pan beneath the drain point.
  • Remove the radiator cap to allow system venting, then remove the drain bolt or lower hose to let coolant drain completely.
  • Inspect the drained fluid: Any oil or excessive debris may indicate internal issues.
  • Once drained, reattach and securely tighten the drain bolt or hose.

Step 4: Flush the System (Recommended)

  • If replacing with a different type of coolant or if debris is present, flush the system with distilled water.
  • For a thorough job: Fill with distilled water, run the engine very briefly, shut it off, and drain again. Repeat until only clean water exits(compressed air can also be used if a waterless flush is required).

Step 5: Refill with New Coolant

  • Using a funnel, pour the recommended coolant into the radiator slowly, filling to the indicated level—usually at the bottom of the radiator fill neck or as specified in your owner's manual.
  • Gently rock the bike side to side to release air pockets. Watch for bubbles to surface, then top up as necessary.

Step 6: Bleed the System

  • Start the engine and let it idle with the radiator cap off to purge air from the cooling system. As the engine warms, watch the coolant level and add if it drops—avoid overfilling.
  • Replace the radiator cap once bubbling stops and coolant remains steady. Inspect for leaks at the drain and hose connections.

Step 7: Final Checks

  • After a short ride, double-check the coolant level once the engine cools. Top off if needed.
  • Inspect for leaks or loose clamps.

GAS GAS EC 250-Specific Notes

  • The 2013 EC 250 uses an aluminum radiator system—always use a coolant safe for aluminum to prevent corrosion.
  • This model's cooling capacity and drain location may differ slightly from other brands. Always verify the drain bolt's location before removing any engine components.
  • Check all radiator hoses and clamps, as vibration from off-road riding can loosen them over time.
  • For regular maintenance, inspect coolant level before every ride and complete a full change at least once per season, or sooner if you ride in harsh conditions.
  • If your EC 250 shows signs of overheating despite fresh coolant, check for clogged radiators, a stuck thermostat, or pump issues.

Disposal

  • Dispose of the old coolant properly at a licensed recycling or hazardous waste facility. Do not pour into drains or onto the ground as it is toxic to pets and wildlife.

By following these steps, you will keep your 2013 GAS GAS EC 250 running cool–adventure after adventure.

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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.