How to Change the Coolant in a 2020 Honda CRF250R: MotoSport Guide
Shop parts for a 2020 Honda CRF250R Dirt Bike.
Changing the coolant on your 2020 Honda CRF250R is a fundamental part of routine maintenance. Proper coolant not only keeps your high-performance motor running cool under stress but also extends the life of your internal engine components. The steps below have been crafted specifically for MotoSport customers and highlight important model-specific notes you need to know before you dive in. Follow these directions for optimal cooling system care, and always refer to your owner's manual for torque specs and diagrams as you work.
Why Coolant Maintenance Matters
The CRF250R is designed for high-output ridingbe it track or trail. Its liquid-cooled, single-cylinder engine runs best with fresh, high-quality coolant. Keeping coolant in-spec ensures ideal temperature control and protects against corrosion and cavitation inside the water jacket passages.
What You Need
- Silicate-free, glycol-based motorcycle coolant (premixed or mixed with distilled water as specified)
- 10mm socket – for water pump drain bolt
- 5mm Allen – for radiator shroud bolts
- Phillips screwdriver – for radiator cap cover
- New copper or aluminum crush washer for the drain bolt
- Catching pan for old coolant
- Shop towels
- Torque wrench
Step-by-Step Instructions
- Allow the engine to cool completely. Never remove the radiator cap while hotpressurized hot coolant can cause severe burns.
- Remove necessary plastics. Unscrew radiator shroud bolts on the right side (usually three bolts for the CRF250R) to expose the radiator cap and hoses. Reference the unique shroud arrangement on this model to avoid broken tabs or stripped threads.
- Release system pressure. Remove the radiator cap cover, then the cap itself carefully to vent any residual pressure.
- Drain the old coolant. Place a pan beneath the water pump. Use a 10mm socket to remove the water pump drain bolt. Let all coolant drain out. Once drained, remove and replace the crush washer on the drain bolt.
- Reinstall the drain bolt. Tighten to factory torque spec (about 10 Nm / 7 lb-ft). Overtightening on the CRF's aluminum case can strip threadsuse a torque wrench for safety.
- Refill with new coolant. Pour coolant slowly into the radiator neck, allowing few seconds for bubbles to escape. Fill to the bottom of the filler neck. If using concentrate, mix with distilled water per your coolant's instructions.
- Bleed air from the system. Rock the bike from side to side several times to dislodge trapped air pockets. If the level drops, top off to the neck.
- Reassemble components. Replace the radiator cap securely – improper sealing causes coolant loss and possible engine overheating on this model. Reinstall the radiator shrouds and any plastics.
- Warm the engine and recheck level. Start the bike and let it idle until the cooling fan cycles on (if equipped) or for several minutes. Shut off, allow to cool, then check and top up coolant as necessary, repeating the bleed if bubbling is observed.
Important Notes for 2020 CRF250R Owners
- Use only silicate-free motorcycle coolantautomotive coolants may damage seals and hoses.
- Check for coolant leaks after reassembly, especially around the water pump and radiators.
- The CRF250R's cooling system holds roughly 0.98 US qt (0.93 L) after a routine change. Total fill may be slightly more if fully drained.
- Slight coolant loss through the overflow tube (up to 2 ounces) is normal; large, persistent losses signal a leak or improper radiator cap installation.
- Replace your coolant every two years or after any severe overheating event to keep the system working at peak efficiency.
Final Tip
Proper coolant maintenance is a small investment leading to big rewards in reliability and engine longevity, especially crucial for race-tuned bikes like the 2020 CRF250R. If unsure about any step, check your manual or consult a MotoSport Pro. Ride safe, ride cool.
Related Shopping Categories
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Shop Radiator Hoses for a 2020 Honda CRF250R 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.