How to Change the Coolant in a 2012 Kawasaki KLX110
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The 2012 Kawasaki KLX110 is a robust and popular dirt bike for younger riders and off-road enthusiasts. While not all small dirt bikes use a liquid cooling system, the KLX110 does require careful fluid and engine maintenance. Below is a proprietary MotoSport guide to changing your coolant safely and properly, with attention to the unique design and needs of the KLX110.
Preparation – What You'll Need
- Fresh, high-quality motorcycle-specific coolant (pre-mixed or mixed with distilled water as per instructions)
- Drain pan
- 10mm socket or wrench
- 8mm socket for side panels (if needed for access)
- Funnel
- Shop rags
- Disposable gloves and eye protection
Important Note About the KLX110's Cooling System
The 2012 KLX110 is an air-cooled engine — it does not utilize a liquid coolant system or radiator like larger, liquid-cooled bikes. Therefore, there is no liquid coolant to change in standard maintenance. All engine temperature control is done through air flow over the cooling fins and by using the correct engine oil. If your KLX110 has been heavily modified or converted with an aftermarket liquid-cooled cylinder or head, always follow the specific manufacturer instructions for coolant changes, as they will vary by kit.
Air-Cooled Maintenance Tips for the KLX110
- Keep cooling fins clean – Use compressed air or a soft brush after rides to remove dirt and debris so heat dissipates efficiently.
- Change oil regularly – Fresh oil helps lubricate and cool internal parts. Refer to your owner's manual for intervals and always use motorcycle-rated oil per spec.
- Avoid prolonged idling – Air-cooled engines rely on air flow. Excessive idling in hot weather can lead to overheating.
If Your KLX110 is Liquid-Cooled (Aftermarket Conversion)
- Remove side panels to access the radiator and overflow bottle (if your kit has them).
- With the engine cool, place a drain pan beneath the radiator or cylinder head drain bolt.
- Open the radiator cap (if present) to vent pressure.
- Remove the drain bolt and allow old coolant to drain completely.
- Install the drain bolt securely with a fresh crush washer if required.
- Refill with motorcycle coolant, using a funnel and filling slowly to avoid air pockets.
- If equipped, bleed the system following kit instructions to eliminate trapped air.
- Reinstall side panels and confirm coolant level after running the bike for a few minutes and letting it cool.
Unique Features & Model Tips
- The stock 2012 KLX110 is simple to maintain because it is air-cooled; ensure all modifications are quality, as improper aftermarket cooling can increase maintenance requirements.
- Always inspect gaskets and bolts during engine work to prevent air leaks, which can lead to hot spots.
- For any parts or upgrades – like cooling shrouds, oil coolers, or custom radiators – MotoSport offers a full catalog backing your 2012 KLX110.
Proper routine engine care is the best way to ensure performance and reliability for your 2012 Kawasaki KLX110, whether stock or modified. Trust MotoSport for parts, tools, and expert support to keep you riding.
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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.