How to Change the Coolant in a 1998 KAWASAKI KX60

Shop parts for a 1998 KAWASAKI KX60 Dirt Bike.

Routine coolant changes are essential to keep your 1998 Kawasaki KX60 two-stroke running cool and preventing overheating, even during aggressive riding. This guide details how to change your coolant and highlights considerations unique to the KX60.

Why Coolant Changes Matter on the KX60

The KX60 is a legendary youth motocrosser known for its high-revving, water-cooled engine. Old coolant loses its ability to transfer heat and protect against corrosion, risking expensive engine damage. Kawasaki's small-bore, high-output motor depends heavily on an effective cooling system – especially if you're running it hard or racing. Regular replacement ensures reliable performance and longevity.

What You Need

  • Fresh coolant: Use a high-quality, motorcycle-specific coolant.
  • 10mm or 8mm socket (check your specific drain bolt size)
  • Funnel for refill
  • Drain pan for old coolant
  • Rag for clean-up
  • Filtered water (if flushing system)
  • Safety gloves (recommended)

Step-by-Step Coolant Change Procedure

  1. Let the Bike Cool Completely: Never open the radiator cap on a hot engine–the coolant is under pressure and can cause burns. Allow the KX60 engine to cool to room temperature.
  2. Access the Radiator: Remove the radiator cap, which is typically located on the left side of the bike. This releases system pressure and speeds up draining.
  3. Locate the Drain Bolt: On the 1998 KX60, the coolant drain bolt is usually found at the bottom of the water pump cover on the right side of the engine. Place your drain pan beneath the bolt.
  4. Drain the Old Coolant: Using your 8mm or 10mm socket, carefully loosen and remove the drain bolt. Allow all the old coolant to fully drain out. Gently rock the bike side to side to help empty the system.
  5. Flush the Cooling System (Optional but Recommended): If the old coolant was dirty or contaminated, pour filtered water into the radiator, reinstall the drain bolt, run the engine briefly, then repeat the draining process to flush any remaining residue.
  6. Reinstall the Drain Bolt: Inspect the drain bolt washer and replace if damaged. Reinstall and snug the bolt, making sure not to overtighten (stripped threads are a common pitfall).
  7. Refill with Fresh Coolant: Using a funnel, pour coolant into the radiator until full and fill the overflow tank to its correct level if your KX60 has one. Be careful to avoid spillage on painted or rubber surfaces.
  8. Remove Air Pockets: Gently rock the bike and squeeze coolant hoses to help release trapped air. Top off the radiator as the level drops. Install the radiator cap securely.
  9. Warm Up and Check Level: Run the engine for several minutes, then shut off and let cool. Check the coolant level again and top off if needed.

What's Unique to the KX60 Owner?

- Small Capacity: Because the KX60 has a small cooling system, it's easy to overlook low fluid levels or miss small leaks. Check your coolant regularly, especially after hard riding or if you spot any drips.

- Frequent Maintenance: With older two-strokes and bikes ridden by younger, new riders, unexpected tip-overs or falls are possible. Always inspect your radiator, hoses, and drain bolt for damage after any crash.

- OEM Parts Fitment: Gaskets and radiator caps can wear over time. If you notice leaks, replace these parts using compatible OEM replacements for best reliability.

Disposal and Final Tips

Dispose of old coolant safely at a recycling center. Never pour coolant on the ground or down a drain–it is toxic to pets and wildlife.

Regular coolant changes are inexpensive insurance for your KX60's engine. For parts, replacement drain bolt washers, or recommended coolants, MotoSport.com carries a full range of components made specifically for your 1998 Kawasaki KX60.

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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.