How to Change the Oil in a 2021 GAS GAS EC250F

Shop parts for a 2021 GAS GAS EC250F Dirt Bike.

Regular oil changes are essential for maintaining the performance and longevity of your 2021 GAS GAS EC250F. This guide, proprietary to MotoSport.com, will provide a step-by-step process for changing your dirt bike's oil, including all necessary tools and special considerations for this specific make and model.

Tools and Materials Needed

  • 13mm socket and ratchet (or 13mm wrench)
  • 8mm Allen wrench or T-wrench
  • T30 Torx bit (if applicable)
  • Oil drain pan
  • Contact cleaner (fast-drying, residue-free)
  • New engine oil (refer to your owner's manual for type and volume)
  • New oil filter
  • Replacement crush washer for the drain bolt
  • Clean rags
  • Torque wrench (for proper reassembly)
  • Gloves (optional, for cleanliness)
  • Proper bike stand or support that provides access to the lower drain bolt

Important Model-Specific Notes for 2021 GAS GAS EC250F

  • The oil drain bolt is located at the bottom of the engine; a 13mm socket or wrench is needed to remove it

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  • Do not use a standard flat stand unless you are sure it allows access to the drain plug. A stand with an opening makes the job easier

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  • This engine is closely related to KTM and Husqvarna 250/350 engines, so many procedures and torque specs are similar

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  • The drain bolt features a magnet to catch stray metal bits — always inspect and clean it when doing an oil change

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Step-by-Step Oil Change Process

  1. Warm Up the Engine
    Start and let the bike idle for a few minutes to let the oil warm and thin out; this helps it drain fully.
  2. Position the Bike and Tools
    Put the bike on a suitable stand that provides clear access to the drain plug. Slide your oil pan beneath the engine
    Pro tip: The right stand will let oil drain easier and prevent messes

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  3. Remove the Drain Bolt
    Use your 13mm wrench or socket to loosen and remove the drain bolt. Allow the oil to drain completely into the pan.
    Note: Take care with the hot oil, and use a clean rag to keep spills down.
    Check the magnet on the drain bolt for any metal shavings and wipe it clean

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  4. Remove and Replace the Oil Filter
    Use your 8mm Allen wrench to remove the bolts from the oil filter cover. Carefully remove the cover and pull out the old filter. If it is stubborn, use pliers gently

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    Wipe the filter area and cover mating surfaces clean. Install the new oil filter according to the orientation found on your bike's manual.
  5. Inspect, Clean and Replace Crush Washer
    Change out the crush washer on your drain bolt for a fresh seal

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  6. Clean and Inspect Oil Screens (if equipped)
    Some GAS GAS (and KTM/Husqvarna) models feature oil screens that should be cleaned with contact cleaner and inspected for debris or damage before reinstallation

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  7. Reinstall Drain Bolt and Filter Cover
    After everything has drained and been cleaned, reinstall the drain bolt and tighten it to the recommended torque spec: 14.8 ft-lbs (20 Nm) (check your user manual to confirm)

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    Reinstall the oil filter cover and torque to the spec noted in your manual.
  8. Add New Oil
    Remove the oil fill cap and pour in the correct amount and type of oil. For the EC250F, refer to your owner's manual for the exact capacity (typically around 1 liter, but always verify for your year).
    Tip: Filling slowly and using a funnel prevents spills.
  9. Start and Check
    Start the bike and let it idle for one minute. Shut off the engine to let oil settle, then use the sight glass or dipstick (as equipped) to check proper oil level. Top off if necessary.
  10. Final Cleanup and Inspection
    Check for oil leaks around the drain plug and filter cover. Wipe away any residue, properly dispose of old oil and filter, and clean up your tools.

Special Tips and Warnings

  • Never over-tighten the drain bolt; always use a torque wrench to ensure a safe oil-tight seal without damaging threads

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  • Replace O-rings or seals if they look flattened or worn when removing the oil filter cover

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  • If you spill oil, use a suitable absorbent and always dispose of old oil according to local regulations.
  • Let the bike run for a few minutes and re-check the oil level once more before heading out for a ride.

Conclusion

Changing the oil on your 2021 GAS GAS EC250F is a straightforward job with the right tools, a little patience, and attention to detail. Following these specific steps and precautions—especially regarding the stand, torque specs, and cleaning the magnetic drain plug—will help your engine live a long and healthy life. For OEM replacement filters, quality oil, and more service guides, visit MotoSport.com regularly.

Related Shopping Categories

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Shop Oil Drain Pans for a 2021 GAS GAS EC250F Dirt Bike.

Shop Tools for a 2021 GAS GAS EC250F Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2021 GAS GAS EC250F Dirt Bike.

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.