How to Change the Oil in a 2023 GAS GAS MC 250F

Shop parts for a 2023 GAS GAS MC 250F Dirt Bike.

Performing regular oil changes is essential for the longevity and performance of your 2023 GAS GAS MC 250F dirt bike. Follow these in-depth, model-specific instructions from MotoSport.com for a smooth, successful oil change.

Tools and Materials Needed

  • 1 liter of Motorex Cross Power 4T 10W/50 full synthetic oil (or equivalent, meeting manufacturer specs)
  • OEM oil filter
  • Crush washer for drain bolt
  • 8mm T-handle or socket wrench
  • 8mm Allen wrench
  • 13mm ratchet or socket wrench
  • Oil catch pan
  • Clean rags
  • Nitrile gloves (optional)
  • Needle-nose pliers (for oil screen)
  • Spray cleaner (for parts)
  • Torque wrench (recommended)

Preparation

  • Warm up the engine for a few minutes to thin the oil for easier draining. Turn off and let it cool slightly.
  • Place the bike safely on a stand. Important: Use a stand that allows access to the drain bolt; most traditional stands block the drain bolt area on this model. A stand with a center opening is recommended so you don't have to tilt or reposition your bike during service.

Step-by-Step Oil Change Procedure

  1. Remove the Oil Drain Bolt and Drain Oil
    • Position your oil pan directly under the engine's drain plug.
    • Using a 13mm wrench, carefully remove the drain bolt and let the old oil flow completely into the pan.
    • Replace the old crush washer with a new one to prevent leaks when reinstalling the drain bolt.
  2. Remove and Replace the Oil Filter
    • Locate the oil filter cover; remove the two 8mm bolts using a T-handle or socket wrench.
    • Carefully pull the oil filter out. If it's tight, use needle-nose pliers for gentle persuasion.
    • Wipe the filter housing clean with a rag. Check and clean sealing surfaces and O-rings. Replace O-rings if they're damaged or flattened.
    • Install the new oil filter, making sure it is properly seated.
  3. Clean and Inspect the Oil Screen
    • Carefully remove the oil screen using your pliers.
    • Spray the oil screen with cleaner and inspect for metal shavings or debris; replace if needed.
    • Lubricate the O-rings with a bit of fresh oil. Reinstall the oil screen, ensuring it sits properly in its groove to prevent internal engine bypass and protect the oil pump gears.
  4. Reinstall the Drain Plug
    • Thread the drain bolt back in by hand.
    • Tighten with your 13mm wrench and torque to 14.8 ft-lb (20 Nm) to avoid stripping threads or causing leaks.
  5. Add Fresh Oil
    • Remove the oil filler cap (typically on the right side of the engine).
    • Slowly pour in 1 liter of Motorex Cross Power 4T 10W/50 (use a funnel for precision and to avoid spills).
    • Reinstall and tighten the oil filler cap.
  6. Check Oil Level and Test for Leaks
    • Start the engine and let it run for 30–60 seconds. Shut it off and wait a minute for the oil to settle.
    • Check for leaks around the drain bolt, oil filter cover, and oil screen area.
    • Inspect the sight glass or dipstick for proper oil level. Add a little more if necessary (avoid overfilling).

Model-Specific Call-Outs for 2023 GAS GAS MC 250F

  • Stand access: This model’s drain bolt location requires a stand with an open center – standard platform stands won’t allow easy access to the bolt and may impede complete draining. Leaning the bike slightly can help maximize oil flow.
  • Oil filter orientation: Double-check the seating and orientation of the oil filter to prevent oil bypass or leaks.
  • Oil capacity: This bike requires approximately 1 liter of 10W/50 four-stroke motorcycle oil; always use a full synthetic that meets JASO MA2 standards.
  • Oil screen seating: Improper installation may allow debris into the oil pump – always check that it is aligned and fully seated in its groove.
  • Torque specs: Always tighten the drain plug and filter cover to spec to avoid stripping the relatively soft aluminum threads.

Tips for Success

  • Dispose of used oil and filter responsibly at a qualified recycling center.
  • Keep records of your service for warranty and resale purposes.
  • Inspect other fasteners and look for leaks as part of your oil change routine.
  • Double-check your owner’s manual for any updates or changes in procedure or specs specific to your model year.

Following this guide ensures your 2023 GAS GAS MC 250F will perform at its best. For quality OEM parts, tools, and supplies, trust MotoSport.com as your source for dirt bike maintenance success.

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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.