How to Change the Coolant in a 2017 Honda CRF250L
Shop parts for a 2017 Honda CRF250L Dirt Bike.
A regular coolant change keeps your 2017 Honda CRF250L running efficiently and helps prevent overheating and corrosion. Honda recommends replacing the coolant every two years or 24,000 miles, whichever comes first. Here is a proprietary MotoSport guidefollow these step-by-step instructions for the CRF250L and make your maintenance routine as smooth as your next ride.
What You Need
- Silicate-free, motorcycle-specific coolant (antifreeze with corrosion inhibitors)
- 5mm Allen key
- 8mm and 10mm sockets with ratchet
- Phillips screwdriver
- Funnel
- Replacement crush washer for drain bolt
- Drain pan
- Paper towels or rags
Step-by-Step Instructions
- Preparation
- Ensure the bike is on a stable, level surface.
- Wait until the engine is completely cool to avoid burns.
- Remove the seat and front right and radiator plastics using the 5mm Allen key and 8mm socket. Only a handful of fasteners need removal; don't strip down the whole bike.
- Accessing the Radiator
- Remove the two bolts holding the coolant reservoir (10mm socket).
- Take off the radiator cap screw (Phillips screwdriver), then remove the cap itself. Do this slowly to relieve any remaining pressure.
- Draining Old Coolant
- Position the drain pan below the water pump drain bolt (bottom right engine case).
- Use the 8mm socket to loosen and remove the drain boltcoolant will flow out.
- Inspect and replace the crush washer to prevent leaks during reassembly.
- If applicable, remove the expansion tank cap and drain this as well.
- Flushing (Optional but Recommended)
- If the old coolant was dirty, pour clean distilled water through the radiator, reinstall the drain bolt with the new washer, fill, run the engine briefly, then drain again to remove any residue.
- Refilling with Fresh Coolant
- Reinstall the drain bolt and torque it securely (do not overtighten).
- With a funnel, pour new coolant slowly into the radiator until full.
- Fill the expansion tank to the recommended level as indicated by the markings.
- Bleed and Top Off
- Start the engine and let it idle for several minutes with the radiator cap offthis allows trapped air to escape. Watch for coolant cycling through the system.
- Add coolant if the level drops. Replace the radiator cap and the expansion tank cap when done, ensuring both are tight.
- Reassembly
- Reinstall the plastics, seat, and radiator covers.
CRF250L Owner Tips & Important Notes
- Service Interval: Change the coolant every two years or 24,000 miles for optimal engine reliability.
- Silicate-Free Coolant: Always use a silicate-free coolant designed for motorcycles to prevent water pump and gasket damage.
- Crush Washer: Replace with each service to prevent leaksan often forgotten but key detail.
- Bleeding Air: Air in the system can cause overheating; run the engine with the radiator cap off after refilling, topping up as needed.
- CRF250L Specifics: The coolant drain bolt is accessible and you do not need to disassemble the frame or skid plate unless you have an aftermarket setup. If you have an aftermarket aluminum skid plate, remove it for easier access.
- Disposal: Used coolant is toxic—collect and dispose of it at a proper recycling facility. Never pour it down the drain.
- Performance: The 2017 Honda CRF250L is reliable, but proper coolant helps these liquid-cooled engines work efficiently under tough off-road conditions and stop-and-go street use alike.
Routine maintenance like coolant changes keeps your Honda at its best, whether on the trail or commuting. If you need any replacement parts, tools, or Honda motorcycles upgrades, MotoSport has you covered.
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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.