How to Change the Coolant in a 2019 KTM 350 EXC-F
Shop parts for a 2019 KTM 350 EXC-F Dirt Bike.
Routine coolant changes are vital to keeping your 2019 KTM 350 EXC-F running cool, especially when tackling demanding trails or hot summer rides. Unique to the 350 EXC-F, KTM uses a dual-radiator high efficiency cooling system with a water pump integrated at the lower engine right sidea service-friendly design for DIY maintenance. Below is a proprietary MotoSport guide to confidently changing the coolant and ensuring your machine stays at peak performance.
What You Need
- New coolant designed for high-performance dirt bikes (KTM recommends non-silicate, phosphate-free formula)
- Distilled water (if you plan to flush the system)
- 8 mm socket or wrench
- Drain pan or catch container
- Funnel
- Rags and gloves
- Torque wrench (recommended for reinstalling drain plug)
Step-by-Step Coolant Change Instructions
-
Ensure the bike is cool.
Never remove the radiator cap when the engine is hot to avoid serious burns. -
Remove the radiator cap.
The radiator cap is located on the upper left side of the bike. Loosen it slowly to release any built-up pressure. -
Locate and remove the coolant drain bolt.
Find the water pump cover on the right lower side of the engine. Use the 8 mm socket to loosen and remove the designated drain bolt at the bottom of the water pump. Position your drain pan to catch old coolant. -
Allow coolant to drain completely.
Tip the bike slightly (safely) to maximize drainage. Dispose of used coolant responsibly; avoid dumping it outdoors. -
(Optional flush) Flush with distilled water.
Reinstall the drain bolt loosely, pour distilled water into the radiator, start the bike briefly, then shut off and let it cool. Remove drain bolt again, allowing flush water to drain. Repeat if needed for a thorough flush. -
Reinstall drain bolt.
Torque the bolt to the KTM specification (check your owner's manual for the correct value). Do not overtighten. -
Add new coolant.
Slowly pour fresh coolant into the radiator until it nearly reaches the bottom of the fill neck. Gently rock the bike or squeeze the hoses to work out any air pockets. -
Bleed the system (if necessary).
Some riders elevate the front wheel to help bleed air; for the KTM 350 EXC-F, this is rarely needed but can help in tricky cases. -
Reinstall radiator cap.
Secure the cap, ensuring it is fully seated. -
Start and recheck.
Run the engine for a few minutes, let it cool, then check coolant level again. Add as needed.
Key Notes for 2019 KTM 350 EXC-F Owners
- Stay with premium coolants. The 350 EXC-F is designed for high-rev off-road use, so never use automotive coolant or plain water for long-term fill.
- Inspect cooling hoses and radiator for leaks or damage during every coolant change.
- Watch for overheating signs: If the fan runs excessively after coolant service, double-check for trapped air or coolant loss.
- The 350 EXC-F cooling system capacity is about 1.1 liters. Do not overfill.
- Always check the owner’s manual for model-specific tips and torque values, as designs may slightly change year to year.
With regular coolant changes and close attention to your cooling system, your KTM 350 EXC-F will continue to offer world-class reliability and performance on every ride.
Related Shopping Categories
Shop Radiators for a 2019 KTM 350 EXC-F Dirt Bike.
Shop Coolant for a 2019 KTM 350 EXC-F Dirt Bike.
Shop Temperature Sensors for a 2019 KTM 350 EXC-F Dirt Bike.
Shop Tools for a 2019 KTM 350 EXC-F Dirt Bike.
Shop Radiator Hoses for a 2019 KTM 350 EXC-F 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.