How to Change the Oil in a 2018 KTM 350XCF: Complete Step-by-Step Guide
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Keeping your 2018 KTM 350XCF running at its best means routine oil changes. Changing the oil yourself not only saves money, it also ensures your bike gets the high-quality maintenance it deserves. This proprietary guide from MotoSport.com covers everything you need, step-by-step, including essential tools, detailed instructions, and important model-specific call-outs for the 2018 KTM 350XCF.
Tools and Supplies Needed
- Sockets and wrenches (particularly 8mm and 13mm, plus torque wrench)
- Oil drain pan
- Funnel
- Clean rags or shop towels
- New engine oil – 10W-50 synthetic recommended by KTM (Motorex or Motul 7100 10W50 are common choices)
- New oil filter
- Replacement O-rings (included with many filter kits, inspect and replace as necessary)
- Contact or brake cleaner (for cleaning up spills)
- Nitrile gloves (optional, for clean hands)
2018 KTM 350XCF Oil Change Capacity & Call-outs
- Oil capacity: 1.0 to 1.1 liters
- Filter installation: Fill the filter cavity about 1/3 full of new oil for initial lubrication (recommended but not strictly necessary)
- Sight glass check: Correct oil level should be between the center and top of the round sight glass, visible on the clutch cover (right side of the engine)
- Torque specs: Bolts are sensitive to over-tightening – tighten oil screens and filter cover to manufacturer spec, which is low (generally under 10 Nm)
- Hand-start bolts: Always hand-thread bolts first to avoid cross-threading or damaging threads
Step-by-Step Oil Change Process
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Warm Up the Engine
- Run the engine for about 2-3 minutes. This thins the oil, helping it drain thoroughly.
- Shut off the engine and allow it to cool just enough to avoid burns.
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Remove Skid Plate (if equipped)
- Some aftermarket skid plates can block the drain plug or oil screen access. Remove if needed.
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Locate and Remove the Drain Plugs & Oil Screen
- Place your drain pan under the engine.
- Remove the two 13mm drain bolts on the bottom of the engine: one for the main drain (left side), the other for the oil screen (right front of engine).
- Allow all oil to drain completely. Remove the oil screen with pliers or a wrench; inspect and clean the screen.
- Inspect and if necessary replace the O-rings on bolts/oil screen.
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Replace/Inspect Oil Filter
- Locate and remove the oil filter cover (left side of engine, 8mm bolts).
- Remove the old oil filter, noting the direction it installs (open end faces outward for most KTM filters).
- Fill the filter cavity about one-third with fresh oil for best lubrication on startup.
- Install the new filter, ensuring correct orientation.
- Replace the cover with a new O-ring if necessary.
- Tighten the filter cover bolts by hand, then to spec (7-8 Nm). Do not overtighten.
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Reinstall Oil Screen and Drain Bolt
- Hand-thread the bolts first to avoid cross-threading.
- Once snug, use your torque wrench and tighten both to KTM's recommended spec (about 7-10 Nm depending on the manual).
- Clean up excess oil or drips.
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Add New Oil
- Remove the oil fill cap on top of the clutch cover (right side of engine).
- Using a funnel, pour in 1.0 to 1.1 liters of 10W-50 synthetic oil.
- Replace the fill cap.
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Prime Oil System and Check Level
- Optionally, with the kill switch engaged, briefly crank the engine to help fill the new filter with oil. This primes the oil system before starting.
- Start the engine and let idle for 1-2 minutes, then shut off and let sit for 1 minute.
- Keep the bike upright (not on a side stand) and check the oil level via the sight glass on the clutch cover.
- Oil should be between the middle and top marks of the sight glass; top off carefully if necessary.
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Final Checks
- Reinstall any skid plate if removed.
- Wipe down any spilled oil with contact cleaner.
- Ride for a couple of minutes and recheck for leaks near drain bolts and the filter cover.
- Double-check the final oil level after the first short ride.
Extra Tips for the 2018 KTM 350XCF
- Many owners prefer to change oil every 10-15 hours of aggressive use; KTM's schedule may recommend more frequent changes if racing or riding in harsh conditions.
- If you use engine ice or other coolant near the oil filter, take extra care not to contaminate the oil with coolant.
- Double-check O-rings and crush washers for every oil change. Always use fresh ones if in doubt to prevent leaks.
Conclusion
Changing the oil on your 2018 KTM 350XCF is a straightforward task and critical for engine longevity and performance. Following the steps above ensures a clean, effective oil change every time, tailored specifically for your bike.
This content is proprietary to MotoSport.com.
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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.