How to Change the Coolant in a 2018 Husqvarna TC125
Shop parts for a 2018 Husqvarna TC125 Dirt Bike.
Regular coolant changes are crucial for keeping your 2018 Husqvarna TC125 running at peak performance, especially during hard riding and in demanding conditions. The TC125 features a high-revving two-stroke engine that relies on a well-maintained cooling system to avoid overheating and ensure reliability on the track or trails. Follow this step-by-step MotoSport-exclusive guide to change your coolant safely & effectively:
Tools & Materials Needed
- Correct type & amount of coolant (consult your owner manual for recommendations)
- Socket set & screwdriver
- Catch pan or container for old coolant
- Clean rags or towels
- Funnel
- Rubber gloves (optional but recommended)
Step-by-Step Coolant Change Instructions
- Ensure the engine is cool before beginning. Never open the radiator cap or drain coolant from a hot engine.
- Position the bike upright on a stand. Remove the radiator caplocated at the top of the right radiatorby turning it counterclockwise.
- Drain old coolant:
- Locate the water pump cover on the lower right side of the engine.
- Place your catch pan directly underneath.
- Remove the coolant drain bolt (typically an M6 bolt on the cover) using your socket wrench. Let all coolant fully drain out.
Pro tip: Open the radiator cap (if not already) and any radiator bleed screw to allow full drainage & faster flow .
- Inspect the coolant:
- If the drained coolant shows signs of oil, rust, or debris, further investigation may be needed.
- Reinstall and tighten the drain bolt to factory torque specifications once completely drained .
- Pour in new coolant:
- Using a funnel, slowly fill the radiator with fresh coolant, stopping periodically to avoid overfilling.
- Locate the bleed screw (usually on the top of the cylinder head or radiator) and crack it open until air bubbles stop and coolant begins to seep out . Retighten the screw securely.
- Continue to top off the coolant to the bottom of the radiator cap neck.
- Replace the radiator cap securely.
- Start the engine and let it idle with the radiator cap onmonitor coolant level and temperature. After the engine cools down, recheck level and top off if needed.
- Dispose of old coolant responsibly.
2018 Husqvarna TC125 Model Notes
- This model's robust two-stroke engine and advanced cooling system help manage high performance & heat, but regular maintenance is essentialespecially for racers or riders in hot climates.
- The radiator vent hose runs to the right valve areaensure hose is not kinked or blocked to prevent overheating issues .
- Consider periodic inspection or upgrading of cooling accessories if you regularly ride in extreme conditions or race frequently .
Conclusion
Staying on top of coolant changes will maximize your TC125's power, reliability, and fun. For the best performance, always use recommended coolants and genuine or high-quality replacement parts. If you're ever unsure or spot any leaks after the job, consult with a pro or your local MotoSport service team.
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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.