How to Change the Oil in a 2011 KTM 350SXF

Shop Parts for a 2011 KTM 350SXF Dirt Bike.

Keeping up with regular oil changes is crucial for the performance and longevity of your 2011 KTM 350SXF. This bike's high-revving engine relies on clean oil not only for lubrication, but also for cooling and debris removal. Here's a step-by-step guide proprietary to MotoSport.com, covering every detail specific to your KTM 350SXF.

Tools and Supplies Needed

  • 8mm socket and ratchet (for oil drain and filter covers)
  • Torx bit (check your drain plug–2011 uses an 8mm standard bolt, but later years may use Torx)
  • Oil catch pan
  • Funnel
  • Contact or brake parts cleaner
  • Clean shop rags
  • New oil filter (always replace during oil change)
  • Fresh engine oil (KTM recommends MOTOREX Cross Power 4T 10W50)
  • Measuring cup (for oil volume accuracy)
  • Replacement crush washers for drain plugs (recommended)

Essential Oil Specs for 2011 KTM 350SXF

  • Oil volume: 1.1 liters (1,100ml)
  • Recommended oil: Fully synthetic 10W50 (MOTOREX Cross Power 4T preferred by KTM)
  • Oil filter: KTM OEM or trusted aftermarket equivalent

Step-by-Step Instructions

  1. Warm Up the Engine
    • Start the bike and let it idle for a few minutes. Warm oil drains faster and carries away more debris.
  2. Stabilize the Motorcycle
    • Position the bike upright and as level as possible, ideally using a shop stand.
  3. Remove the Skid Plate (If Equipped)
    • This gives better access to the drain bolts and prevents a huge mess.
  4. Remove Oil Filler Cap
    • Twist off the filler cap (right side of engine) to prevent a vacuum and speed up oil draining.
  5. Drain the Oil
    • Locate both drain bolts under the engine (front and rear).
    • Using the 8mm socket, loosen and remove both drain bolts. Watch for the small magnet on at least one drain plug—inspect for excess metal shavings; a little fuzz is normal.
    • Let oil fully drain into your catch pan.
  6. Clean and Inspect Drain Bolts
    • Wipe debris from the magnet and replace crush washers if necessary.
  7. Remove and Clean the Oil Screen
    • On the front drain, inspect for an oil screen. Remove and spray clean with contact or brake cleaner. Replace if excessively dirty or damaged.
  8. Replace Oil Filter
    • Remove the oil filter cover (8mm socket, right side). Swap out the old filter for the new one. Lube the new filter with a touch of fresh oil.
    • Check O-rings, clean the cover and seat the filter correctly.
  9. Reinstall Drain Bolts and Filter Cover
    • Install both drain bolts. Torque is low—just snug: about 7.4 Nm (65 in-lb).
    • Reinstall the oil filter cover, tightening bolts evenly to prevent leaks.
  10. Add Fresh Oil
    • Place your funnel in the filler neck and pour in 1.1 liters of 10W50 oil.
    • Replace the filler cap.
  11. Check Oil Level
    • With the bike level, look at the sight glass (behind the brake pedal). The oil should be centered in the sight glass's small circle.
    • If low, add oil in small increments. Don't overfill.
  12. Start and Circulate
    • Start the engine and let it idle for a minute. Shut off the bike, let it sit for a few minutes, then check the oil level again.
    • Top off if necessary so that the oil level is between the middle and top of the sight glass.
  13. Clean Up
    • Wipe up any spills, reinstall your skid plate, and properly dispose of the old oil and filter at a recycling center.

Special Call-Outs for the 2011 KTM 350SXF

  • The 2011 350SXF has two separate oil drain plugs—ensure both are removed for a complete drain. Missing one will leave a significant amount of dirty oil behind.
  • Oil volume is 1.1 liters for this year (later models sometimes require more).
  • The sight glass for checking oil level is partially hidden behind the brake pedal—push the rear brake down to improve visibility.
  • Pay close attention to torque specs on drain and filter cover bolts; overtightening can strip threads in the lightweight magnesium cases.
  • Always inspect the magnetic drain plug for metal debris. A small amount is normal, but chunks or excessive fuzz could indicate an internal issue.

Final Tips

  • It's good practice to do the first oil change after every race or intensive ride, then every 5–10 hours or as the riding manual suggests.
  • Stick to KTM-recommended oils and filters for best protection and warranty compliance.
  • If your bike sits for prolonged periods, change the oil annually, regardless of hours ridden.
  • Avoid over-tightening any bolts—hand start all threads before snugging with a wrench.

Changing your oil every few rides will keep your 2011 KTM 350SXF performing like new and help you avoid costly engine damage. Happy riding from 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.