How to Change the Oil in a 1995 KTM 400SC: MotoSport.com Official Guide

Shop parts for a 1995 KTM 400SC Dirt Bike.

Keeping your 1995 KTM 400SC running strong requires regular oil changes. This guide covers all the tools you'll need, step-by-step instructions, and model-specific notes to ensure a smooth oil change for your KTM 400SC.

Tools & Supplies Needed

  • Drain pan
  • 13mm socket or wrench (for main drain bolt)
  • 8mm socket or wrench (for oil filter cover bolts)
  • Common hand tools
  • Pliers (for removing screen plug if stuck)
  • Paper towels or rags
  • Contact or brake cleaner (for cleaning drain plug/screens)
  • Funnel
  • Fresh engine oil (meeting or exceeding API SF, SG, SH; see below)
  • New oil filter(s)
  • OEM O-rings and crush washers (recommended but can be reused if undamaged)
  • Service manual (optional but helpful)

Oil Specification & Capacity for 1995 KTM 400SC

  • Required oil spec: API class SF, SG, or SH (or higher); mineral or synthetic permitted
  • Recommended oil amount: Check your manual, but typical fill is around 1.6 – 1.7 qt (approx. 1.5 – 1.6 L)
  • Do not overfill. Poor oil quality or wrong quantity can cause premature engine wear specifically noted for the 400SC.

Step-by-Step Instructions

  1. Warm Up the Engine
    • Start your bike and let it idle for about 3–5 minutes so the oil flows better and carries debris into the sump.
    • Turn off the engine and ensure the bike is stable on a stand.
  2. Remove the Filler Cap
    • Take off the oil filler cap on the engine side cover to allow air in and for easier draining.
  3. Drain the Engine Oil
    • Locate the main drain plug (horizontally mounted at the lower-back of the engine, 13mm head).
    • Place your drain pan beneath, and carefully remove the plug.
    • Let the oil drain completely.
    • Inspect and clean the magnetic drain plug. Remove any metal debris with a rag and contact cleaner.
  4. Remove & Clean Oil Screens
    • There are two oil screens in the 400SC engine:
    • Long screen: Located just under the shifter. Remove the bolt, extract the screen, and clean it thoroughly with contact cleaner. Ensure it's free of debris before reinstalling.
    • Short screen: Located at the bottom of the engine. Remove and clean in the same manner.
  5. Oil Filter Replacement
    • Remove the oil filter cover using an 8mm socket (typically three bolts on the 400SC).
    • Take out the oil filter. Note the installation orientation—the O-ring faces out.
    • Clean the cover and housing, and install a new filter. Make sure O-rings are in good shape—replace if damaged.
    • Reinstall the oil filter cover and tighten bolts evenly.
  6. Reinstall Drain Plug & Screens
    • Inspect and replace crush washers/O-rings on all plugs/screens if needed.
    • Reinstall the main drain plug, long screen, and short screen securely.
  7. Refill with New Oil
    • Use a funnel to add the recommended amount of oil (approximately 1.5–1.7 quarts for this engine, but always consult your manual or sight glass/dipstick for exact fill).
    • Start the engine, let it idle for a minute, then shut it off and check the oil level.
    • Add more if needed, but do not overfill.
  8. Check for Leaks & Final Inspection
    • Inspect all plugs and covers for leaks.
    • Wipe any spilled oil and dispose of used oil/filters responsibly.

Special Notes for the 1995 KTM 400SC

  • The KTM 400SC uses a unique dual oil screen and single cartridge filter system. Both screens must be thoroughly cleaned at each change.
  • Magnetic drain plug: Always clean off shavings and metal dust, especially on older bikes.
  • Be gentle with the oil filter cover and keep track of O-rings for proper sealing and oil pressure.
  • Use only high-quality oil meeting or exceeding API SF/SG/SH; this is critical for RFS engines like the 400SC.
  • Some bolts, especially the long screen plug, can seize due to dirt or old oil—use contact cleaner as needed for easier removal.
  • Always check oil level after your first short ride and top up if required, as some oil may remain in engine cavities.

Finishing Up

  • Old oil and filters should be recycled in accordance with local regulations—never dump them down drains.
  • Check your owner's manual for recommended oil change intervals. For hard off-road use, changes should be more frequent to keep your engine performing at its best.

By following these steps, your 1995 KTM 400SC will be ready for many more miles of off-road adventure. Trust MotoSport.com for all your OEM parts, tools, and maintenance supplies.

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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.