How to Change the Coolant in a 2007 GAS GAS EC 250
Maintaining the cooling system on your 2007 GAS GAS EC 250 is critical for peak performance, especially when riding hard or in high temperatures. Coolant degrades over time, losing its ability to protect against corrosion and overheating, so regular replacement is recommended. This step-by-step guide covers how to safely drain and refill the coolant in your EC 250, as well as important model-specific notes every owner should know.
What You Need
- New coolant (use high-quality motorcycle-compatible coolant, mixed 60/40 with distilled water unless pre-mixed)
- Catch container for old coolant
- Basic hand tools (socket set, screwdrivers, pliers)
- Rags for cleanup
- Gloves and eye protection
Steps to Change Coolant
- Ensure the engine is cool. Never attempt to change the coolant on a hot engine to avoid burns and injury.
- Remove the seat and right side panel to access the radiator cap. On the EC 250, these come off easily with a socket or Phillips screwdriver.
- Open the radiator cap slowly. If under pressure, open carefully to release any remaining pressure.
- Locate and remove the lower radiator hose or drain plug. For the 2007 EC 250, this is typically found at the lowest point of the cooling system, at the water pump cover or the base of the left radiator. Use a socket or pliers to loosen the hose clamp, then gently pull the hose free. Allow coolant to drain completely into your catch container. Make sure the bike is upright so the system empties fully.
- Inspect hoses and clamps. Check condition of coolant hoses for cracks, swelling, or loose clamps. Replace if any show wear.
- Flush if needed. If the coolant appears contaminated, flush the system by pouring distilled water through the radiator and re-draining. Repeat until the water runs clear.
- Reconnect the hose or reinstall the drain plug and tighten all hose clamps securely.
- Refill coolant. Pour your new coolant mixture into the radiator until full. The EC 250 requires about 1 liter (check your owner's manual for exact capacity).
- Bleed air from the system. Gently rock the bike side-to-side to release trapped air. You can also loosen the bleed screw (where equipped) on top of the cylinder head until coolant seeps out, then tighten it again.
- Reinstall the radiator cap, panels, and seat.
- Start the bike and let it idle for a few minutes. Watch for leaks. Shut off the engine, let it cool, then recheck the coolant level. Top up if necessary.
Model-Specific Tips for the 2007 GAS GAS EC 250
- The stock coolant may be colorless or opaque (unlike typical green antifreeze) – either type can be used safely, but avoid mixing different coolant types unless compatible. Always use a silicate-free coolant to protect the EC 250's seals and gaskets.
- If switching from one coolant type to another, flush the system thoroughly with distilled water to prevent chemical reactions that could damage gaskets or engine internals.
- The EC 250's robust aluminum radiators are effective but can be vulnerable to tip-overs and rocks. Routinely inspect for damage or leaks, as even small impacts can affect cooling performance.
- Use only distilled water when mixing coolant. Tap water introduces minerals that may cause scale build-up and reduce heat transfer.
- Overfilling the radiator can cause coolant to expand and vent; leave a small air gap below the neck of the radiator when filling.
When to Change Coolant
For most riders, change the coolant at least once per season or every 2 years, whichever comes first. Frequent racers or those riding in harsh conditions may benefit from more frequent changes.
Safe Disposal
Never pour used coolant down the drain or onto the ground. Recycle it at an approved waste facility to protect the environment – used coolant is poisonous to people and wildlife.
Enjoy Your Next Ride
With fresh coolant, your 2007 GAS GAS EC 250 is protected against the elements and ready for your next adventure. Routine maintenance like this keeps your ride running cool and reliable whether you’re on the trail or the track.
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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.