How to Change the Coolant in a 2017 KTM 350XCF: Complete Step-by-Step Guide
Shop parts for a 2017 KTM 350XCF Dirt Bike.
Routine coolant changes are essential for the longevity and performance of your 2017 KTM 350XCF. Although the process is quite straightforward, knowing the specific steps–and the quirks of this model–will make the job easier and help you avoid costly mistakes. Follow this MotoSport-exclusive guide for a complete coolant swap on your 350XCF.
Preparation
- Tools & Supplies Needed: 8mm socket or wrench, a drain pan, fresh coolant recommended for KTM off-road bikes, funnel, shop rags, and optionally a torque wrench.
- Allow the engine to cool completely before starting. Hot coolant can cause burns.
- Position your KTM 350XCF upright on a stable surface, such as a bike stand.
Step 1: Remove the Radiator Cap
- Locate the radiator cap on top of the right radiator. Twist and remove it to release pressure from the system. This step helps the coolant flow out smoothly when you open the drain†.
Step 2: Locate & Remove the Water Pump Drain Bolt
- The water pump drain bolt is usually on the lower water pump cover on the right side of the engine. Place your drain pan underneath.
- Using the 8mm socket or wrench, loosen and remove the bolt. Coolant will flow out quickly–guide it into the pan.
- Inspect the drain bolt seal ring and replace if worn out (a small touch, but important for leak-free reassembly).
Step 3: Drain Both Radiators
- Tilt the bike gently from side-to-side to ensure both radiators fully drain. This prevents old coolant from being trapped in the system.
Step 4: Flush the System (Optional for Thoroughness)
- For total system health, fill the radiators with distilled water after the old coolant drains, reinstall the drain bolt, and run the engine for a minute. Then repeat the drain process.
Step 5: Reinstall the Drain Bolt
- Once draining is complete, reinstall the drain bolt and seal ring.
- If you have a torque wrench, tighten to KTM specifications: typically 10 Nm (7.4 lbf–ft), but check your owner's manual for confirmation.
Step 6: Refill the Cooling System
- Slowly pour new coolant into the radiator until it reaches the top. Use a funnel for a clean pour.
- Bleed air from the system by gently squeezing the coolant hoses, allowing trapped bubbles to escape.
- Reinstall the radiator cap.
Step 7: Final Check
- Start the engine and let it idle with the radiator cap on. Monitor temperature and check for leaks at the drain bolt and around the radiators.
- Let the bike cool, then recheck coolant level and top off as needed.
Special Notes for the 2017 KTM 350XCF Owner
- This model has a compact engine layout, so work carefully to avoid cross-threading fasteners. Use correct torque on boltsespecially the plastic radiator cap and drain bolt.
- If you ride extreme terrain or high heat, consider upgrading to a high-performance coolant or even a fan kit to decrease the risk of overheating–both are available at MotoSport.
- KTM's lightweight radiators are efficient but susceptible to clogging from muddy rides. Periodically inspect for external mud and debris buildup, and clean as needed.
Your 2017 KTM 350XCF delivers impressive performance thanks in part to careful cooling system engineering. With regular maintenance and high-quality replacement parts, you can enjoy many hours of trouble-free riding.
Related Shopping Categories
Shop Radiators for a 2017 KTM 350XCF Dirt Bike.
Shop Coolant for a 2017 KTM 350XCF Dirt Bike.
Shop Temperature Sensors for a 2017 KTM 350XCF Dirt Bike.
Shop Tools for a 2017 KTM 350XCF Dirt Bike.
Shop Radiator Hoses for a 2017 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.
