How to Change the Coolant in a 2014 GAS GAS EC250ER
Keeping your 2014 GAS GAS EC250ER’s cooling system in top shape is essential for engine longevity and consistent performance. While changing coolant is a routine task, the EC250ER has a couple of model-specific notes to keep in mind. Here’s your MotoSport-exclusive step-by-step guide to draining, flushing, and refilling the coolant with extra attention to crucial checks along the way.
Tools & Materials Needed
- New coolant (recommended for off-road motorcycles, never plain water or automotive coolant)
- Drain pan
- 8mm socket or wrench (for water pump drain bolt)
- New copper washer for drain bolt
- Clean rags
- Protective gear (gloves, eye protection)
Prep the Bike
- Let the engine cool completely. Never open the radiator cap or cooling system when hot–scalding liquid can spray out under pressure.
- Place the bike on a level surface and ensure it is secure on a stand.
Drain the Old Coolant
- Remove the radiator cap to allow air to enter during draining. The cap is typically found at the top of the left-side radiator.
- Locate the drain bolt on the water pump cover (bottom right side of engine).
- Position your drain pan beneath and carefully remove the bolt along with its copper washer.
- Let all coolant drain out. It may be necessary to lean the bike slightly from side to side to help any remaining coolant escape.
Inspect the Cooling System
- Check coolant for contamination: White, cotton-like patches may signal aluminum corrosion; brown coolant typically means oxidized steel/iron parts. Either case warrants a thorough flush and possible inspection of the system components.
- Inspect the radiator hoses for cracks, brittleness, or chafing. Squeeze gently to check for pliability. Replace any hoses that appear damaged.
- Check hose clamps for tightness and look at the radiator fins for any bent or damaged fins.
Flush the System (Recommended)
- If switching coolant types or after seeing signs of corrosion, flush the system with distilled water. Fill, run the engine briefly (cap on loosely), let cool, and drain again.
- Never use tap water–it can lead to mineral buildup.
Refill with Fresh Coolant
- Install a new copper washer on the drain bolt for a proper seal. Torque the water pump drain bolt to 9 Nm.
- Fill the radiator slowly with fresh coolant up to the bottom of the radiator filler neck. Slightly rock the bike to help air bubbles work their way out.
- Reinstall the radiator cap securely.
Check & Bleed Air from the System
- Start the engine and let it idle until it reaches operating temperature. Watch closely as the coolant circulates; you may observe some bubbling as air bleeds out.
- Shut off the engine and let it cool. Re-check the coolant level and top off if necessary.
Final Checks
- Inspect for leaks at the drain bolt, hoses, and radiator cap.
- Take a short test ride, then allow the engine to cool and verify coolant level again.
Key EC250ER-Specific Notes
- This model uses a copper washer on the water pump drain bolt, which must be replaced every time you service the coolant for proper sealing.
- Routine check and replacement intervals for the EC250ER: Inspect the coolant every 30 hours and replace every 60 hours of operation.
- Pay attention to any dramatic color change or residue in the old coolant, as this could indicate corrosion due to this model's combination of aluminum and steel in the system.
- If coolant contacts tires or brakes during service, clean thoroughly–slippery coolant is a safety hazard.
Your EC250ER deserves the best. For all replacement hoses, clamps, coolant, and other cooling system parts, shop parts for your ride now!
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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.