How to Change the Coolant in a 2017 Suzuki RMZ250 Dirt Bike
Shop parts for a 2017 Suzuki RMZ250 Dirt Bike.
Keeping your 2017 Suzuki RMZ250 cool on the track is essential for engine longevity – regular coolant maintenance is a must. This step-by-step guide covers everything you need to know about replacing engine coolant on this high-performance dirt bike, along with model-specific notes crucial for RMZ250 owners.
What Makes the RMZ250 Coolant System Unique?
- Aluminum Construction: The RMZ250 uses an aluminum radiator, cylinder, and cylinder head. This means you must use a coolant formulated for aluminum parts. Using non-approved coolants can result in corrosion and clogged coolant passages, drastically impacting performance and engine reliability.
- Capacity: The system holds approximately 950 ml of coolant, which is about 1 US quart.
- Caution: Never open the radiator cap when the engine is hot to avoid scalding injuries.
Tools & Supplies Needed
- Socket wrench and suitable sockets
- New gasket washer for the drain bolt
- Fresh coolant compatible with aluminum radiators (Premixed or 50:50 distilled water – coolant blend)
- Catch pan
- Clean shop rags
- Protective gloves
Step-by-Step Coolant Change Procedure
- Ensure the engine is completely cool. This is vital to avoid burns and allow for safe removal of the radiator cap.
- Remove the radiator cap. Locate the radiator cap at the top of the radiator and twist it off.
- Drain the old coolant.
- Place the catch pan under the engine.
- Locate the coolant drain bolt at the base of the water pump.
- Remove this bolt and allow the coolant to drain fully.
- Replace the drain bolt gasket washer with a new one.
- Reinstall the drain bolt and torque to 11 N&mndash;m (8.0 lbf–ft).
- Bleed the cooling system.
- Loosen the air bleeder bolt (typically found near the thermostat housing).
- This helps remove air pockets during refilling.
- Add new coolant.
- Pour coolant in slowly until it reaches the bottom of the filler neck.
- Watch for bubbles as the air bleeds out.
- Tighten the air bleeder bolt once coolant flows without air bubbles.
- Reinstall the radiator cap securely.
- Start the engine and run briefly.
- Let the bike idle for several minutes.
- Check coolant level and top up if necessary after the engine has cooled.
- Inspect for leaks.
- Check around the drain bolt, hoses, and radiator seams after your first ride.
Important Reminders for RMZ250 Owners
- Use ONLY aluminum-compatible coolant – mixing with other coolant types can cause irreversible damage.
- Replace the drain bolt washer every service, even if it looks intact, to prevent leaks.
- Dispose of used coolant safely – never pour it on the ground or down drains. It is toxic to pets and wildlife.
- If you ride in harsh conditions or race, inspect your coolant more frequently for optimal engine protection.
Final Tip
To keep your RMZ250 performing at its peak, combine regular coolant changes with scheduled air filter and oil service. When in doubt, always consult your owner“s manual for torque specs and intervals.
Related Shopping Categories
Shop Radiators for a 2017 Suzuki RMZ250 Dirt Bike.
Shop Coolant for a 2017 Suzuki RMZ250 Dirt Bike.
Shop Temperature Sensors for a 2017 Suzuki RMZ250 Dirt Bike.
Shop Tools for a 2017 Suzuki RMZ250 Dirt Bike.
Shop Radiator Hoses for a 2017 Suzuki RMZ250 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.