How to Change the Coolant in a 2014 Kawasaki KX85
Shop parts for a 2014 Kawasaki KX85 Dirt Bike.
Regular coolant changes are essential to keep your 2014 Kawasaki KX85 running at peak performance. This two-stroke dirt bike features a liquid cooling system that requires routine maintenance to prevent overheating, corrosion, and wear on vital components. The process below is tailored specifically for the KX85 and highlights model-specific considerations every owner should know.
What You Need
- Permanent-type antifreeze for aluminum engines, free of silicates and compatible with soft water
- Soft water for mixing (50 percent coolant – 50 percent water recommended)
- Drain pan
- 10 mm socket or wrench
- Clean funnel
- Shop towels
- Protective gloves & eyewear
Important Precautions
- Never open the radiator cap when the engine is hot. Coolant is under pressure and can cause burns.
- Coolant is toxic and slippery. Work in a well-ventilated area and clean any spills immediately.
Step-By-Step Coolant Change for the KX85
- Ensure the bike is cool. Place it on a level stand. Remove the seat and shrouds if needed for easier radiator access.
- Remove the radiator cap. Slowly open the cap to release any residual pressure.
- Locate the coolant drain bolt on the engine cylinder. Place a drain pan beneath and remove this bolt with your 10 mm wrench. Allow all coolant to drain completely.
Tip: Tilt the bike gently to ensure full drainage. - Flush if switching coolant types or if coolant appears dirty. Remove radiator hoses and blow compressed air through the radiator and engine passages. If reusing the same coolant type and coolant is clean, this step is optional.
- Reinstall the drain bolt and torque to spec (consult the service manual for your preferred value, typically around 9 Nm).
- Mix fresh coolant and distilled water 50:50 if not using pre-mixed coolant. The total capacity is approx. 0.57 L (0.60 US qt).
- Slowly fill the system with new coolant up to the bottom of the radiator filler neck.
- Bleed air from the system. Loosen the air bleeder bolt on the cylinder head until coolant flows out, then tighten to 9.4 Nm. Gently tap the radiator and hoses with a gloved hand to release trapped bubbles.
- Check coolant level and add as needed.
- Reinstall radiator cap securely. After running the engine and allowing it to cool, recheck coolant level and top off if necessary.
KX85-Specific Notes
- The KX85 uses green coolant formulated for aluminum engines. Avoid using plain water, automotive antifreeze, or anything with silicates.
- Inspect for leaks around the drain bolt, radiator cap, and hose connections during each coolant service.
- Flush the system if you see rust, lime scale, or contaminated coolant—clean cooling passages are essential for the KX85's high-performance two-stroke engine.
- Check the coolant level regularly, especially after hard rides or after the initial coolant change.
Maintenance Intervals
- Recommended coolant change interval is every 40–50 hours of riding, or at least once per year, whichever comes first.
Take care with proper coolant and periodic checks to protect the life and performance of your Kawasaki KX85 engine. Shop replacement radiators, hoses, and cooling system parts as needed to keep your bike on the 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.