How to Change the Coolant in a 2019 KTM 350XCF: MotoSport Guide
Shop parts for a 2019 KTM 350XCF Dirt Bike.
Regular coolant changes are key for keeping your 2019 KTM 350XCF running strong – especially if you ride hard or in hot conditions. This model uses an advanced cooling system designed for enduro and cross-country challenges, so correct maintenance prevents overheating and extends engine life. Here—s your expert MotoSport step-by-step guide:
What You Need
- Quality motorcycle-specific coolant (never use plain water or car coolant)
- 8mm socket or wrench (to remove the water pump drain screw)
- Drain pan or container
- Funnel
- Torque wrench (recommended)
- Rags and gloves
Preparation – Before You Begin
- Make certain the engine is completely cool before starting.
- Set the bike upright on a level, stable surface, ideally using a stand.
- Remove the seat and shrouds for easier access if needed.
Step-by-Step Coolant Change Procedure
- Remove the Radiator Cap:
The radiator cap is usually located on the left side of the bike. Removing it breaks any vacuum and allows coolant to drain fully. Always do this slowly and cautiously to release any residual pressure. - Locate the Water Pump Drain Bolt:
Find the 8mm drain bolt on the water pump cover, usually situated on the right side, near the bottom of the engine. Position your drain pan beneath this bolt. - Drain the Coolant:
Loosen and remove the drain bolt. Allow all coolant to flow into the pan. Tip the bike gently from side to side to help expel trapped old coolant.
Note: If your 350XCF still contains the factory hose and hardware, verify that you are removing the correct drain bolt as 2019 models underwent slight changes to the pump/impeller area compared to previous years. - Flush the System (Optional):
For optimal results, refill with distilled water, run the engine briefly, allow to cool, and repeat steps 1-3 to ensure a thorough flush. - Reinstall Drain Bolt:
Inspect the sealing washer or O-ring on the drain bolt. Replace if damaged. Reinstall the bolt and tighten with a torque wrench to manufacturer specs (typically around 10 Nm; check your service manual for confirmation). - Fill with New Coolant:
Using a funnel, slowly pour new coolant into the radiator until it reaches the base of the filler neck. Gently rock the bike to remove any air pockets. - Bleed the System:
Squeeze the radiator hoses by hand to encourage trapped air to escape. Some models may have a bleed screw on the radiator – if so, open it briefly to bleed remaining air. - Reinstall Radiator Cap and Inspect:
Once the coolant level is set and air expelled, reinstall the radiator cap securely. - Warm Up and Recheck Level:
Start the engine, let it idle until it warms up, then shut off and allow to cool. Check coolant level and top up if needed. - Clean Up:
Wipe any spilled coolant from the engine and frame. Dispose of old coolant responsibly – never pour it down the drain or on the ground.
Model-Specific Tips & Cautions
- The 2019 KTM 350XCF features a high-performance aluminum radiator – avoid overfilling, as excess pressure may damage delicate components.
- Always use coolant suitable for aluminum engines. Premixed motorcycle coolant with corrosion inhibitors is ideal.
- Check hoses and clamps for signs of wear or leaks; the 2019 350XCF is particularly sensitive to coolant loss due to the compact design of the cooling passages.
- After the first ride, inspect under the bike and at hose connections for any fresh leaks.
- If you routinely race or ride in muddy/wet conditions, inspect the radiator and cooling fan for clogs and clean as needed.
Keeping your KTM 350XCF's cooling system properly maintained is essential for maximizing horsepower and longevity. Make a coolant change part of your annual service, or more often if you ride in harsh climates or extreme terrain.
Related Shopping Categories
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Shop Radiator Hoses for a 2019 KTM 350XCF 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.