How to Change the Coolant in a 2024 Kawasaki KX112
Shop parts for a 2024 Kawasaki KX112 Dirt Bike.
Keeping your 2024 Kawasaki KX112 running at its best starts with regular maintenance, and changing the coolant is crucial for engine longevity and reliable power delivery. The KX112 features a high-revving two-stroke engine designed for competition–with higher operating temperatures than trail or play bikes, it needs consistently fresh coolant to avoid overheating and protect internal components.
Tools & Supplies Needed
- 10mm socket or wrench (to access the drain bolt)
- Phillips screwdriver (to access the radiator bleeder cap)
- Rag for cleanup
- New coolant compatible with modern aluminum radiators and motocross standards (avoid automotive coolant with silicates)
- Drain pan or suitable container
- Funnel (optional, for easier refilling)
Step-by-Step Coolant Change Procedure
- Ensure the bike is completely cool. Changing coolant on a hot engine can cause burns and high-pressure spray. Always work on a cold bike.
- Remove the radiator cap. Locate the radiator cap on the left side. Turn it slowly to release any residual pressure before fully removing.
- Open the radiator bleeder cap. Unique to Kawasaki models, the KX112 includes a small bleeder cap or screw typically on the opposite side from the main radiator cap. Remove this with a Phillips screwdriver–this step reduces vacuum and allows the system to drain smoothly without splashing or a vacuum lock.
- Remove the coolant drain bolt. The drain bolt is usually at the lowest point on the right side of the engine case, with a washer to ensure a good seal. Place your drain pan underneath and remove the bolt to let the coolant flow out. Inspect fluid for rust or contamination–cloudy or dirty coolant could indicate internal corrosion or gasket issues.
- Inspect the drain washer and bolt. Replace them if they appear worn or damaged to prevent future leaks.
- Reinstall the drain bolt. Tighten it snugly using the 10mm tool, but do not overtighten.
- Fill the radiator with new coolant. Pour slowly to prevent air pockets. Continue filling until coolant reaches just below the radiator neck.
- Replace the bleeder cap. With the radiator still open, close the bleeder cap to start sealing the system from the bottom up.
- Bleed the cooling system. Gently rock the bike side to side or squeeze the lower radiator hose by hand. Top off coolant as air escapes and the fluid level drops.
- Secure the radiator cap. Ensure it clicks fully into place for a tight seal.
- Wipe down any spills and dispose of old coolant according to local regulations.
Things to Note About the KX112
- The KX112 is designed for high-rev, high-output junior racing and is sensitive to coolant quality–use only pre-mixed motorcycle-specific coolant or a product made for aluminum systems.
- Check hoses and radiator for leaks while the system is drained. Coolant leaks will quickly cause overheating–address any signs of weeping or cracks.
- Coolant should be changed once per season for racing or after any overheat or contamination incident for best protection and performance.
- For additional cooling, consider a high-flow cooling fan or upgraded radiator guards if you often ride in extreme heat or mud.
Final Tips
- Never mix different types of coolant–flush thoroughly if switching brands or types.
- Recheck coolant level after first ride. Add fluid if needed to keep at full mark.
- Always run the bike and check for leaks after a coolant change.
Related Shopping Categories
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Shop Tools for a 2024 Kawasaki KX112 Dirt Bike.
Shop Radiator Hoses for a 2024 Kawasaki KX112 Dirt Bike.
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.