How to Change the Coolant in a 2015 Kawasaki KLX110L: Maintenance Guide
Shop parts for a 2015 Kawasaki KLX110L Dirt Bike.
Routine maintenance is key for keeping your Kawasaki KLX110L running at peak performance, and changing the coolant is no exception. Over time, coolant degrades, leading to less effective cooling and the risk of engine damage. The 2015 KLX110L features a simple design, but proper coolant service is essential for longevity—especially during long rides or tough trail conditions.
What You Need
- Fresh motorcycle coolant (make sure it is compatible—avoid mixing types or using automotive coolant)
- Distilled water (if mixing; pre-mixed coolant is recommended for convenience)
- 10mm socket and ratchet
- Funnel
- Drain pan
- Phillips screwdriver (to remove panels, if needed)
- Rags for cleanup
- Protective gloves
Step-By-Step Coolant Change Process
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Prepare the Bike:
- Make sure the engine is completely cool before starting.
- Park the KLX110L on a level surface and ensure it is stable (use a bike stand if needed).
- Remove any body panels if needed to access the radiator cap and drain bolt.
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Drain the Old Coolant:
- Place your drain pan under the water pump area.
- Remove the radiator cap slowly to relieve any pressure.
- Locate the coolant drain bolt on the water pump (typically 10mm). Loosen and remove it, allowing the old coolant to fully drain.
- If the reservoir tank is separate, empty it as well.
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Flush (Optional but Recommended):
- For best results, flush the system with distilled water to remove old coolant residue or debris. Add distilled water, reinstall the drain bolt, and run the engine briefly. Then drain again.
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Inspect & Reassemble:
- Inspect hoses and clamps for wear or leaks. Replace as needed.
- Install a new sealing washer on the drain bolt, then tighten securely.
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Refill the System with Coolant:
- Using a funnel, slowly pour fresh motorcycle coolant into the radiator until it reaches the base of the filler neck.
- If your coolant is concentrated, mix it 50/50 with distilled water. Never use tap water, as minerals can damage your cooling system.
- Fill the reservoir to the upper line.
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Remove Air Bubbles (Burping):
- Start the engine with the radiator cap off. Let it idle and gently blip the throttle, rocking the bike slightly to release trapped air. Watch for the coolant level to drop as bubbles escape.
- Once bubbling stops, top off the radiator if needed and replace the cap securely.
- Check the reservoir again and top off to the upper line.
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Clean Up & Finish:
- Reinstall any bodywork removed earlier.
- Wipe any spilled coolant and safely dispose of the old fluid by bringing it to a recycling center or auto parts store.
- After your first ride, let the bike cool and recheck coolant levels—top off as needed.
Model-Specific Notes for the 2015 KLX110L
- The KLX110L features a compact, air-cooled engine; however, maintaining the coolant (if equipped with an aftermarket radiator or used for extended hard riding) is just as vital as on liquid-cooled models.
- Ensure all vents and fins are free from debris—overheating can still occur if airflow is blocked, even if your coolant is fresh.
- Check for leaks at the water pump and radiator. Gasket condition is critical on these compact engines.
- Never use coolant with silicates or phosphates, as they may cause internal corrosion in small-bore Japanese engines like the KLX110L.
Maintenance Tips
- Check coolant level at least every other ride in hot or severe conditions.
- Replace coolant every two years, or more frequently with heavy use or after overheating.
- Always use motorcycle-specific coolant for optimal protection.
Regular coolant maintenance is a quick way to ensure your Kawasaki KLX110L lasts for many more rides. Invest a few minutes now, and avoid roadside headaches on the trail or track.
Related Shopping Categories
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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.