How to Change the Coolant in a 2015 Kawasaki KLX110
Shop parts for a 2015 Kawasaki KLX110 Dirt Bike.
The 2015 Kawasaki KLX110 is a legendary small-bore dirt bike – highly reliable, but like all liquid-cooled bikes, it depends on regular coolant changes to prevent overheating and maximize engine life. This step-by-step guide details the unique process for the KLX110, along with essential tips every owner should know.
Why You Should Change the Coolant
- Old coolant loses its protective qualities, risking internal corrosion and poor heat transfer.
- Regular coolant replacement keeps your KLX110 running cooler – especially crucial for kids or aggressive trail riding.
- Contaminants and deposits can clog passages in the cooling system over time.
Tools & Supplies Needed
- New coolant suitable for off-road motorcycles
- 10 mm socket and ratchet
- Phillips screwdriver
- Drain pan
- Clean rags
- Funnel
- Distilled water (for flushing, if desired)
- Protective gloves
Step-by-Step: Changing Coolant on a 2015 KLX110
- Ensure the engine is completely cool: Never open the radiator cap on a hot engine – pressure buildup can cause burns.
- Remove the side panels: Use the 8 mm or 10 mm socket to remove the side cover and access the radiator and overflow tank. Store fasteners in a safe place.
- Position your drain pan: Place it securely beneath the engine to catch all old coolant.
- Remove the radiator cap: Twist it off slowly to release any pressure. Removing the cap helps air enter as old coolant exits.
- Locate the coolant drain bolt: The KLX110 uses a drain bolt on the bottom of the water pump or at the base of the engine. Use the 10 mm socket to loosen and remove it. Have rags handy for drips or splashes.
- Allow all coolant to drain fully: Tilt the bike gently if needed to get the last bit out.
- Optional – Flush with distilled water: For best results, pour a small amount of distilled water into the radiator, replace the cap, and shake gently. Drain again, then reinstall the drain bolt snugly – do not overtighten.
- Refill with new coolant: Using a funnel, slowly pour fresh motorcycle coolant into the radiator until full. Fill the overflow reservoir to the illustrated "full" line.
- Bleed the cooling system: Some KLX110s have a bleeder bolt on the thermostat housing or cylinder head. Open this slightly until coolant flows without bubbles, then retighten. This removes trapped air which can cause overheating.
- Reinstall the radiator cap: Make sure it is properly seated and secure.
- Check for leaks & reassemble panels: Before reinstalling the side covers, inspect for drips. Start the engine and let it run for several minutes, monitoring the temperature. Top off coolant if needed after the engine cools again.
Additional KLX110 Owner Tips
- The coolant capacity for the KLX110 is modest, so take care not to overfill – excess fluid may escape via the overflow.
- If the radiator or any hose looks damaged or corroded, consider replacing it at this time to avoid future leaks or bursts.
- Observe the color of the drained coolant. Any brownish tint may indicate rust or contamination, suggesting you should flush more aggressively.
- Always use motorcycle-specific coolant for aluminum engines – avoid generic car coolants which often contain silicates and phosphates that can harm your KLX110.
When to Change the Coolant
- Kawasaki recommends changing coolant at least every two years – more often if you ride in hot conditions, mud, or through repeated overheating episodes.
- Inspect coolant condition visually before every season – cloudy or foul-smelling fluid means it is time to replace.
Keep Your KLX110 Performing Its Best
Regular coolant maintenance is a simple but vital part of Kawasaki KLX110 ownership. Stay ahead of wear – refresh your bike's cooling system and keep the fun, safe rides coming. For any parts or tools needed, be sure to Shop parts for a 2015 Kawasaki KLX110 Dirt Bike.
Related Shopping Categories
Shop Radiators for a 2015 Kawasaki KLX110 Dirt Bike.
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Shop Temperature Sensors for a 2015 Kawasaki KLX110 Dirt Bike.
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Shop Radiator Hoses for a 2015 Kawasaki KLX110 Dirt Bike.
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.