How to Change the Coolant in a 2018 Kawasaki KLX110: Step-by-Step Guide
Shop parts for a 2018 Kawasaki KLX110 Dirt Bike.
The Kawasaki KLX110 is one of the most popular dirt bikes for beginners and seasoned riders alike. Whether used for racing or weekend trail riding, routine maintenance is essential to keep your 2018 KLX110 running smoothly. One often-overlooked task is changing the coolant–vital for preventing overheating and extending the life of your engine. This exclusive MotoSport.com guide details every step and highlights what's unique about the KLX110's cooling system.
Why Coolant Maintenance Matters
The KLX110 uses a small, air-cooled engine, which does not rely on a liquid coolant or radiator system found on high-performance or larger-displacement motorcycles. Instead, its cooling system is simple, with engine oil and airflow as primary heat control. For 2018 and similar years, Kawasaki's KLX110 does not have a traditional liquid coolant system. What this means is that you don't have to perform liquid coolant changes, but keeping the engine oil fresh is critical for proper cooling and engine longevity.
How to Prepare for Proper Maintenance
- Verify your model: Ensure you have a 2018 KLX110. (Some other KLX and KLX110L/110R variants have more advanced cooling, but the standard 110 remains air-cooled.)
- Oil is your coolant: Because the KLX110 is air-cooled, maintaining correct oil levels and changing the oil on schedule is the most effective way to protect your engine from overheating.
- Inspect the cylinder fins: Clean dirt and debris from the cylinder head and cooling fins. Clogged fins can reduce airflow, causing heat buildup.
Recommended Maintenance Steps for the KLX110 Cooling System
- Clean the exterior: Use compressed air or a soft brush to clear mud, leaves, or debris from cylinder head fins.
- Change engine oil regularly: Replace engine oil every 6 months or 50 hours of use to improve cooling and prevent oil breakdown. Use quality four-stroke motorcycle oil for small-displacement engines.
- Check for leaks: Inspect for oil leaks around the cylinder base and head gaskets–even small leaks can lead to oil loss and overheating.
- Monitor riding conditions: Extended idling or slow-speed use in hot environments can cause higher engine temps. Let the engine idle only as needed, and avoid prolonged stationary running.
- If modifying your KLX110: If you've installed aftermarket kits that add a supplemental oil cooler, follow the specific manufacturer's instructions for oil and thermal management.
What Makes the KLX110 Unique?
- Air-cooled simplicity: No radiators, coolant reservoirs, or coolant drain bolts to service–oil is your lifeblood.
- Lightweight and reliable: Fewer cooling system parts means less that can go wrong and easier upkeep for new riders.
- Maintenance tip: If your KLX110 seems to run hot, double-check both oil quality and the cleanliness of the engine fins before suspecting deeper issues.
For KLX110 owners, keeping the engine oil fresh and the cooling fins clean is the recipe for a healthy and cool-running dirt bike. If you need parts for routine service–from oil filters to gaskets–
Shop parts for a 2018 Kawasaki KLX110 Dirt Bike.
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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.