How to Change the Oil in a 2019 KTM 350SXF — MotoSport.com Guide

Shop parts for a 2019 KTM 350SXF Dirt Bike.

Regular oil changes are vital for keeping your 2019 KTM 350SXF running smoothly and ensuring lasting engine health. This detailed guide covers every step, lists all necessary tools, and highlights model-specific details every owner should know.

Tools & Materials Needed

  • 13mm socket or wrench (for drain plugs and filter screen)
  • Torx bits or Allen keys (check your skid plate fasteners, as styles vary)
  • Drain pan
  • Clean rag or shop towels
  • Measuring cup or beaker (at least 1.2 liters capacity)
  • New motor oil, Motorex Cross Power 4T 10W-50 (or as specified in your manual)
  • New oil filter (OEM or high-quality aftermarket)
  • New crush washers (for both drain bolts)
  • Gloves (to keep hands clean)
  • Torque wrench (optional but recommended)

Recommended Oil Capacity for 2019 KTM 350SXF

  • 1.1 liters – Standard fill
  • 1.2 liters – If changing both oil filter and screens

Always verify in your owner’s manual for capacity and torque specs as tiny updates can occur year to year. On the 2019 KTM 350SXF, these quantities are accurate for most normal oil changes, but always double-check if your bike has any updates or if aftermarket parts have been installed.

Step-by-Step Oil Change Procedure

  1. Warm Up the Engine
    • Start your KTM 350SXF and let it idle for 2–3 minutes. Warm oil drains more thoroughly and suspends contaminants for better removal.
  2. Remove the Skid Plate (if equipped)
    • Most 2019 models have a factory skid plate that must be removed for access to drain bolts. Use the correct Torx or Allen size to avoid stripping hardware.
  3. Position Your Drain Pan
    • Locate both drain bolts: one is on the bottom of the engine (sump plug), the other is on the side and doubles as the oil filter screen access.
  4. Remove the Lower Engine Drain Bolt
    • Use a 13mm wrench/socket to remove the bolt and let the oil drain completely.
    • Note: The sump plug has a copper crush washer and a magnetic tip. Clean metal shavings from the magnet before reinstalling.
  5. Remove the Oil Screen Cover
    • Use your 13mm wrench/socket again to unscrew the oil screen plug, located on the side of the engine. Carefully pull the screen out and inspect for debris.
    • Tip: The screen cover has a rubber o-ring. Inspect for damage and replace if needed to prevent leaks.
  6. Replace or Clean the Oil Screen
    • If the screen is reusable and undamaged, clean it with brake cleaner or solvent, then reinstall.
    • If debris is excessive or the screen is damaged, replace it.
  7. Remove and Replace the Oil Filter
    • Undo the oil filter cover bolts, remove the cover, and pull out the oil filter.
    • Install a new oil filter. Optional tip: Lightly pre-soak the filter in fresh oil for improved initial lubrication, then slide it into place.
    • Torque bolts to manufacturer spec to avoid overtightening.
  8. Replace Crush Washers and Reinstall Bolts
    • Install new crush washers on the sump plug and oil screen cover. Tighten both to manufacturer torque spec (refer to your manual or service sticker).
    • Failure to replace crush washers may cause leaks.
  9. Add Fresh Oil
    • Remove the oil filler cap on the right side of the engine. Using a measuring cup or funnel, pour in 1.1–1.2 liters of fresh oil (for filter and screen change use the upper value).
    • Clean the filler cap and threads, reinstall, and hand-tighten.
    • Wipe up any spilled oil.
  10. Check the Oil Level
    • Start the engine and let it idle for about 30 seconds. Shut it off and let oil settle for 2–3 minutes.
    • Use the sight glass (hidden behind the rear brake pedal) to check that oil is between the middle and top marks.
    • Add oil in small increments to top off if needed.
  11. Inspect and Reinstall Skid Plate
    • Inspect under the bike for leaks. If all is dry, reinstall your skid plate securely.

2019 KTM 350SXF Model-Specific Callouts

  • The oil capacity is approximately 1.1–1.2 liters. Overfilling can cause excess pressure and leaks; underfilling can result in engine wear.
  • Always inspect the magnetic drain plug for metal debris — a small amount of fine particles is normal, but chunks may indicate abnormal wear.
  • Do not overtighten oil filter and drain bolts — damaged threads will require expensive repairs. Use torque wrenches as specified in your service manual.
  • Check your rubber o-ring on the filter screen for any nicks or wear, which can cause persistent leaks. Replace as necessary.
  • Oil changes should be performed at least every 15 engine hours, or more often if you’re riding in harsh conditions or racing.

Disposal & Final Checks

  • Dispose of used oil and filter properly at a recycling facility or auto parts store.
  • Check for leaks after your first short ride, and top off oil level again as it may settle.
  • Write down your oil change interval for accurate maintenance records.

For more service parts, oils, and professional gear, visit MotoSport.com — your expert source for all things KTM.

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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.