How to Change the Coolant in a 2013 Honda CRF150R
Shop parts for a 2013 Honda CRF150R Dirt Bike.
Changing the coolant on your 2013 Honda CRF150R is a straightforward maintenance task that keeps your bike running cool, prevents overheating, and prolongs the life of critical engine components. This guide shares the proprietary MotoSport method for the CRF150R—a race-bred mini with a high-revving engine that demands optimal cooling performance.
What Makes the CRF150R Unique?
- Engine Heat: The CRF150R's four-stroke, liquid-cooled powerplant runs hotter than most trail bikes, especially during motocross or aggressive riding. Regular coolant changes are crucial.
- Drain Location: Honda engineered an accessible drain bolt at the water pump on the lower right side–no need to strip the bike down for access.
- Radiator Capacity: The system is compact; air pockets are common. Proper burping after refill ensures full cooling efficiency.
Tools & Supplies Needed
- 8mm socket or wrench (for water pump drain bolt)
- Fresh coolant (recommended: silicate-free, premixed for off-road bikes)
- Distilled water (if flushing)
- Catch pan for old coolant
- Funnel
- Protective gloves
Step-by-Step Coolant Change Instructions
-
Allow the Engine to Cool
Never open the radiator cap or drain the system when hot. Coolant under pressure can cause serious burns. -
Remove the Radiator Cap
Locate the radiator cap—twist it off to relieve system pressure. -
Drain Old Coolant
Place your catch pan beneath the water pump.
Remove the lower water pump bolt (8mm) and let the coolant drain completely.
For a more thorough flush, pour distilled water through the system until clear water flows out, then reinstall the drain bolt securely.
Avoid using tap water, which can cause scaling and corrosion inside your cooling system. -
Add New Coolant
Use a funnel to slowly pour new coolant into the radiator until filled to the very top. Take care to prevent air bubbles.
Tip: Pour slowly and pause to let trapped air escape. -
Burb the System
Without replacing the cap, kick the bike over gently several times to activate the water pump and circulate coolant. This process forces air bubbles out through the filler neck.
Top off the radiator as needed, since burping typically drops the level. -
Secure the Radiator Cap
Press down and twist until you feel two distinct clicks–this ensures a tight, sealed closure. -
Final Coolant Level Check
After the first ride, let the bike cool and re-check the coolant level. The system may purge remaining air, so topping off may be necessary.
Noteworthy CRF150R Tips
- Inspect radiator hoses and clamps during each coolant change.
- Never overfill—the expansion overflow tube will expel excess fluid down the frame.
- The owner's manual recommends dealer service, but with basic hand tools and care, most owners can handle coolant changes at home.
Regular coolant service is essential for the CRF150R, especially if you're pushing your bike hard at the track or trails. Following these steps will keep your mini motocrosser running cool, responsive, and ready for every ride.
Related Shopping Categories
Shop Radiators for a 2013 Honda CRF150R Dirt Bike.
Shop Coolant for a 2013 Honda CRF150R Dirt Bike.
Shop Temperature Sensors for a 2013 Honda CRF150R Dirt Bike.
Shop Tools for a 2013 Honda CRF150R Dirt Bike.
Shop Radiator Hoses for a 2013 Honda CRF150R 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.