How to Change the Coolant in a 2024 Husqvarna TC125
Shop parts for a 2024 Husqvarna TC125 Dirt Bike.
Maintaining the cooling system on your 2024 Husqvarna TC125 is critical for optimal engine performance – especially in high-temperature riding conditions. The 2024 TC125 features advanced Electronic Fuel Injection (EFI), a redesigned frame with an integrated coolant channel, and modern materials throughout, making routine maintenance such as coolant changes essential for the bike's longevity and safe operation.
Why Change the Coolant?
- Prevents overheating and engine damage, especially with the high-performance EFI system and precisely tuned electronic exhaust.
- Avoids corrosion and internal deposits in the radiator and cooling passages.
- Ensures consistent cooling for aggressive track or trail use.
Preparation: What You Need
- OE-recommended blue G11-type coolant or high-quality engine coolant compatible with aluminum radiators.
- Basic metric socket set (8mm or 10mm usually needed).
- Drain pan, funnel, and clean rags.
- Protective gloves – coolant is toxic.
Step-by-Step Instructions
- Ensure the TC125 is completely cool – never open the radiator cap when hot. Position the bike upright on a level surface.
- Remove radiator shrouds or panels if needed for access to the radiator cap.
- Remove the radiator cap slowly to release any remaining pressure.
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Locate the coolant drain bolt:
- On the TC125, the coolant drain bolt is typically located on the lower water pump cover (right side of the engine, lowest bolt). Always double check with your owner's manual for bolt identification.
- Place a drain pan beneath the engine. Loosen and remove the drain bolt. Allow the coolant to flow until completely drained.
- Inspect and clean the drain bolt (replace its crush washer if damaged). Reinstall the bolt and torque to specification.
- Loosen the lowest radiator hose clamp and remove the hose to drain any trapped coolant from the bottom of the radiators.
- Reattach all hoses and clamps securely.
- Pour fresh coolant into the radiator until full. Use a funnel to prevent spills. Do not overfill – leave a small gap for expansion.
- With the bike upright, gently rock the TC125 side to side to release any air bubbles. Top off the coolant if needed.
- Start the engine and let it idle for a minute (with the radiator cap off, if possible). Watch for bubbles (air escaping the system). Once bubbling stops, top up coolant to the appropriate level.
- Reinstall the radiator cap securely.
- Double check for leaks at all bolts and hose connections, and reinstall any body panels removed.
Important Model-Specific Notes
- The 2024 TC125 uses an integrated center tube channel in the frame for optimized coolant flow, so ensure all coolant passages are fully purged of old coolant.
- With EFI, engine temperatures can fluctuate more precisely than on carbureted models – always use top-quality, approved coolant to protect the sensors and components.
- The electric starter and compact battery location change radiator hose routing – confirm hose clamps and electrical connectors are not pinched during reassembly.
- Monitor the coolant level after first ride – air pockets may take some time to fully work out in this chassis design.
Chemical Safety & Disposal
- Dispose of old coolant safely at a recycling center – do not pour it down the drain or onto the ground.
- Keep coolant away from children & pets. It is both toxic and attractive due to its sweet odor.
A few extra minutes spent properly changing your coolant helps guarantee more consistent engine temperatures and a longer life for your Husqvarna TC125 – whether on the motocross track or the trails.
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.