How to Change the Coolant in a 1983 Kawasaki KX60
Shop parts for a 1983 Kawasaki KX60 Dirt Bike.
Routine coolant changes are critical for prolonging the life and performance of your 1983 Kawasaki KX60. Old coolant can become acidic, decreasing its effectiveness at heat transfer and protection against corrosion–especially important in a dedicated 2-stroke mini motocross bike like the KX60, which is air- and liquid-cooled for high-revving runs.
Before You Begin: Make sure the engine is completely cool before starting. Hot coolant can cause severe burns. Wear protective gloves and eyewear, and work in a well-ventilated area.
Tools & Supplies You Will Need
- Fresh coolant compatible with aluminum motorcycle radiators (never plain water)
- Drain pan (minimum 2 quarts capacity)
- 10mm socket or wrench
- Large Phillips screwdriver
- Clean rags
- Funnel
Step-by-Step Coolant Change Guide
- Remove the seat and side panels to access the top of the radiator and frame braces.
- Locate and remove the radiator cap. Always open the cap slowly to relieve any trapped pressure.
- Place your drain pan under the water pump cover. On the KX60, the drain bolt is usually located on the lowest point of the right-hand engine case–directly beneath the water pump.
- Remove the drain bolt with the 10mm socket. Let the old coolant fully drain out. Slightly tip the bike (to the right side) to help expel trapped fluid. Inspect the drained coolant for contamination or metal flakes–signs of corrosion or gasket wear.
- If your KX60 has a coolant bleed screw on the radiator (less common for this model year, but worth checking), loosen it carefully with a Phillips screwdriver for easier draining and later air removal.
- Replace the drain bolt and tighten it securely. Do not overtighten–snug is enough to seal the O-ring or copper washer.
- Slowly pour in fresh coolant using a funnel, filling to just below the base of the radiator neck. Pause occasionally to let air bubbles escape. If you opened a bleed screw, tighten it once a steady stream of coolant runs out.
- Reinstall the radiator cap, ensuring proper fitment to prevent leaks.
- Start the bike and let it idle for several minutes. This allows the thermostat to open (if equipped) and the new coolant to circulate, helping purge trapped air out of the system. Monitor the temperature and ensure there are no leaks.
- Turn off the engine and let the bike cool completely. Recheck your coolant level and top off if necessary.
- Dispose of old coolant responsibly by taking it to an approved recycling center. Never pour coolant down a drain or onto the ground.
Special Notes for the 1983 Kawasaki KX60
- The 1983 KX60 uses a simple, rugged two-stroke single-cylinder engine and a basic liquid-cooling system–no thermostat or overflow tank is present from the factory. This means checking coolant level is even more important: after your first ride, always check and top up as needed.
- Kawasaki recommended using a silicate-free, pre-mixed motorcycle coolant for the best protection against corrosion in both the radiator and cylinder head water jacket.
- Inspect the radiator hoses and clamps for cracks or leaks, as aging rubber is typical on bikes this age. Replace them if needed before refilling.
- Always check for signs of white residue around the water pump, which can indicate weep hole leakage–a common sign the water pump seal is failing and should be replaced.
Proper coolant changes on your 1983 KX60 keep this iconic mini motocrosser running at peak performance for competitive racing or backyard fun. Stay proactive, inspect everything, and your two-stroke will stay cool under pressure.
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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.