How to Change the Coolant in a 2019 Honda CRF250L RALLY ABS
Shop parts for a 2019 Honda CRF250L RALLY ABS Dirt Bike.
The 2019 Honda CRF250L RALLY ABS is a versatile dual-sport motorcycle designed for both adventure and everyday reliability. Regular coolant changes are essential for protecting the liquid-cooled engine from overheating and ensuring long component life. Honda recommends changing the coolant every two years or 24,000 miles, whichever comes first. Below is a comprehensive, step-by-step guide for changing the coolant safely and efficiently on this specific model, with attention to important details unique to your CRF250L RALLY ABS.
What You'll Need
- Silicate-free, motorcycle-approved coolant with corrosion inhibitors
- Funnel
- 5mm Allen wrench
- 8mm and 10mm sockets
- Ratchet
- Phillips head screwdriver
- Crush washer for the drain bolt (single-use–replace every service)
- Catch pan for old coolant
- Shop towels or rags
- Optional: Torque wrench
Step 1: Prepare the Motorcycle
- Let the engine cool completely. Attempting to open the cooling system while hot can result in serious burns due to pressurized steam and hot coolant.
- Stabilize the bike on level ground using a stand.
Step 2: Remove Side Panels & Radiator Cover
- Using a 5mm Allen wrench, remove the top screw securing the radiator shroud on the left side. Only one screw is needed there.
- On the right side (radiator cap side), remove four screws and two plastic retainers to allow full access to the radiator cap. Set all hardware aside in a tray for reinstallation.
- If your bike has an aftermarket skid plate, you may need to use a 4mm Allen key to remove the bolts securing it before accessing lower bolts on the panel.
Step 3: Remove the Radiator Cap
- Use a Phillips screwdriver to remove the small set screw securing the radiator cap guard.
- Unscrew and carefully remove the radiator cap. This will help air enter the cooling system and allow the old coolant to drain faster.
Step 4: Drain the Old Coolant
- Locate the coolant drain bolt and crush washer near the bottom of the water pump on the right side of the engine. Position the drain pan underneath.
- Use an 8mm socket to remove the drain bolt. Allow the coolant to drain fully.
- Tip: To speed up draining, gently tilt the bike (without risking a tip-over) or use a syringe to assist with draining hard-to-reach areas in the overflow tank.
Step 5: Inspect and Replace the Crush Washer
- Always install a new crush washer on the drain bolt. Reusing the old washer can lead to leaks.
- Reinstall the drain bolt and tighten securely. If available, torque to factory specification (typically 9 Nm, but always confirm with your owner–service manual).
Step 6: Fill with New Coolant
- Use a funnel and pour the recommended coolant slowly into the radiator neck. Fill until the coolant reaches just below the filler neck.
- Add coolant to the overflow reservoir up to the upper fill line.
Step 7: Bleed & Refill as Needed
- With caps still off, start the engine and let it idle briefly for 30–60 seconds. Gently rock the bike side to side to help dislodge any air bubbles from the cooling system.
- Turn the engine off, let the bike cool, and top off coolant at both the radiator and reservoir if the level has dropped.
Step 8: Reassemble Panels & Double-Check
- Reinstall the radiator cap and cap guard, ensuring they are secure.
- Mount the side panels and replace all screws, retainers, and hardware in their original positions.
- Reinstall the skid plate, if removed.
- Check for leaks around the drain bolt and radiator cap area. Check again after your next short ride as an extra precaution.
Model-Specific Notes
- The ABS braking system is unaffected by coolant changes, but always check for any accidental fluid contact with ABS lines or connectors and clean thoroughly to prevent damage.
- The unique fairing and reservoir arrangement on the CRF250L RALLY ABS means careful panel removal is recommended to avoid snapping tabs or damaging rubber grommets. Marking the locations of grommets and tabs with masking tape is helpful for beginners.
- If you cannot fully remove the overflow tank to clean it, a syringe and tube can help draw out old fluids for a more complete flush.
Coolant Disposal & Final Tips
- Dispose of old coolant according to your municipal regulations–never pour down the drain or onto the ground as it is toxic to people and animals.
- Perform a final coolant level check after your first ride. Add coolant if needed and keep an eye on the reservoir mark regularly, especially in hot or off-road conditions.
Following these steps will keep your 2019 Honda CRF250L RALLY ABS healthy and ready for your next adventure. For all the parts, tools, and gear you need, rely on MotoSport as your one-stop source for OEM and aftermarket solutions.
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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.