How to Change the Coolant in a 2001 Honda CR500
Shop parts for a 2001 Honda CR500 Dirt Bike.
Regular coolant changes are essential for the legendary 2001 Honda CR500, keeping its massive two-stroke engine running cool and preventing costly corrosion. With its rugged design and potent power, the CR500's cooling system is one of the keys to reliability on trail, track, or dunes.
What Makes the 2001 CR500's Cooling System Unique?
- High engine temperatures: The CR500 is known for its intense power output, so proper coolant maintenance is critical to prevent overheating and head gasket issues.
- Aluminum radiators: Only use ethylene glycol-based coolants designed for aluminum components–never plain water or automotive coolant with silica additives.
What You Need
- New coolant (ethylene glycol-based, safe for aluminum radiators)
- Drain pan
- Socket set (10mm for drain bolt)
- Replacement crush washer for drain bolt (recommended)
- Funnel
- Clean rags
- Safety gloves and glasses
Step-by-Step: Changing the Coolant
-
Allow Engine to Cool
Never start the job with a hot engine or radiator. Let the CR500 cool completely to avoid burns and pressure spray. -
Remove the Radiator Cap
Carefully twist off the radiator cap. If you feel any resistance or hissing, wait until fully depressurized. -
Locate and Remove the Drain Bolt
Find the coolant drain bolt at the water pump (right side, bottom engine case). Place your drain pan underneath and remove the bolt using a 10mm socket.
Allow all coolant to drain. For a more thorough flush, tip the bike side to side gently. -
Replace Crush Washer and Reinstall Drain Bolt
Install a new crush washer on the bolt if available–this helps prevent leaks. Reinstall and torque the bolt snugly but don't overtighten. -
Fill with New Coolant
Pour fresh coolant into the radiator neck using a funnel. Fill to the very top, stopping occasionally to let air escape. -
Burp the Radiator
With the cap off, start the engine and let it idle 1–2 minutes. Watch for air bubbles escaping. Rev lightly a few times and check coolant level–add more if it drops.
Turn engine off and wait a few minutes for coolant to settle; top up as needed. -
Reinstall Radiator Cap
Confirm coolant is topped off, then reinstall the cap securely. -
Check for Leaks and Test Ride
Start engine, monitor temperature, and inspect for leaks–especially around the drain bolt and radiator seams. After a short ride, allow bike to cool and recheck coolant level.
Pro Tips for CR500 Owners
- Never mix coolant types. Always flush old coolant out completely before refilling.
- Inspect and clean radiator fins regularly–mud and debris limit airflow on this powerhouse.
- If you ride hard or in dunes, consider coolant with extra corrosion protection.
- Change coolant every season or as soon as it appears cloudy, rusty, or contaminated.
The 2001 Honda CR500 is a dirt bike icon. Maintaining its cooling system ensures hours of reliable performance and preserves that famous two-stroke roar for years to come.
Related Shopping Categories
Shop Radiators for a 2001 Honda CR500 Dirt Bike.
Shop Coolant for a 2001 Honda CR500 Dirt Bike.
Shop Temperature Sensors for a 2001 Honda CR500 Dirt Bike.
Shop Tools for a 2001 Honda CR500 Dirt Bike.
Shop Radiator Hoses for a 2001 Honda CR500 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.