How to Change the Coolant in a 2017 Kawasaki KX85
Shop parts for a 2017 Kawasaki KX85 Dirt Bike.
Changing the coolant in your 2017 Kawasaki KX85 ensures optimal engine temperature, prevents overheating, and maximizes performance whether you're racing or riding trails. Here's a comprehensive, MotoSport-exclusive step-by-step guide tailored for KX85 owners.
Essential Tools and Supplies
- Fresh coolant (ensure it is compatible with aluminum engines)
- Socket or wrench set (10mm works for most drain bolts)
- Funnel
- Drain pan
- Replacement crush washer (recommended)
- Shop rags
- Safety gloves
Step-by-Step Guide to Coolant Replacement
- Let the Bike Cool
Never attempt to drain coolant from a hot engine to avoid burns. Ensure the bike is completely cool to the touch. - Access the Radiator Cap
Remove the seat and shrouds if needed for better access to the radiator cap. The KX85's compact design may require moving a few panels to reach the cap comfortably. - Position the Bike and Drain Pan
Secure the KX85 on a stand. Place a drain pan underneath the water pump or the lowest coolant drain point on the enginethe drain bolt is typically found on the lower right side of the cylinder. - Remove the Radiator Cap
Loosen and remove the radiator cap to allow air in, helping the coolant drain faster. - Drain the Old Coolant
Use the appropriate wrench to loosen and remove the drain bolt on the water pump cover. Allow all the coolant to drain. On the KX85, check for an additional cylinder drain bolt and remove it if present for a more thorough drain. Inspect and replace the crush washer on the drain bolt if needed.
Tilt the bike slightly if necessary to extract all fluid. - Inspect and Reinstall Drain Bolts
After draining, inspect the drain bolt and washer for wear. Install a new crush washer if possible, then reinstall the drain bolt securely (do not overtighten). - Flush the System (Optional but Recommended)
If switching coolants or if the old coolant was contaminated, pour a small amount of distilled water into the radiator, reinstall the drain bolt, and run the bike briefly. Let it cool, then drain again. Repeat as necessary until clear. - Refill with New Coolant
Slowly pour the new coolant into the radiator using a funnel to avoid spills. Fill until the coolant is visible just below the filler neck. For the 2017 KX85, the typical system capacity is about 0.50 liters (check owner's manual for exact volume). - Bleed Air from the System
Gently tilt the bike side to side to release trapped air. Squeeze both main hoses by hand to help. Top off the radiator as needed. - Reinstall Radiator Cap and Check for Leaks
Ensure the cap is secure. Start the engine and let it idle for a few minutes, monitoring temperature and checking for leaks at the drain plug and hose connections.
After the bike cools again, recheck and top off coolant if necessary.
Specific Tips for 2017 Kawasaki KX85 Owners
- Check for Leaks: The KX85's cooling system is compactinspect all hoses, clamps, and radiator welds for leaks after every service.
- Overflow Bottle: If your bike has an aftermarket overflow tank, make sure it is properly filled and vented so air bubbles don't end up trapped in the radiator.
- Service Interval: Change the coolant at least once per season or every 40 to 50 engine hours, more often if riding in sandy, muddy, or harsh conditions.
- Coolant Type: Use a high-quality, non-silicate formula compatible with magnesium engine cases to protect your water pump seals and the KX85's lightweight alloy components.
- Inspect the Cap: The radiator cap's rubber seal can wearreplace if cracked or misshapen to maintain proper pressure and prevent overheating.
Proper coolant maintenance keeps your KX85 running strong lap after lap–don't cut corners when it comes to engine temperature. Always dispose of old coolant responsibly as it is toxic to pets, wildlife, and the environment.
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.