How to Change the Oil in a 2014 GAS GAS EC 250

Shop parts for a 2014 GAS GAS EC 250 Dirt Bike.

Welcome to MotoSport.com's comprehensive guide on how to change the oil in your 2014 GAS GAS EC 250. Routine oil changes will help protect and prolong the life of your dirt bike's engine, ensuring you get the best performance every time you ride. This tutorial walks you through the oil change process, explains what tools and materials you need, and highlights model-specific tips for the 2014 EC 250.

Tools and Materials Needed

  • 13mm socket or wrench – to remove the drain bolt
  • T30 Torx bit – may be required for certain bolts (check your specific bolt heads)
  • Oil catch pan
  • Clean rag or shop towels
  • Contact cleaner – to clean oily surfaces
  • New engine oil – refer to your owner's manual for the exact type and capacity
  • New oil filter (optional but recommended if your model is equipped with a replaceable oil filter)
  • New drain bolt washer/crush washer
  • Funnel – for pouring new oil
  • Nitrile gloves (optional, for a cleaner job)

Preparation and Safety

  • Ensure the bike is completely cool to avoid burns.
  • Secure the bike on a stable stand, with enough room underneath for your oil catch pan.
  • Wear gloves to keep hands clean and safe from hot oil.

Step-By-Step Oil Change Instructions

  • Warm Up the Engine Briefly
    • Start the bike and let it idle for 1-2 minutes. This helps the oil flow out more easily, carrying more contaminants with it.
    • Turn off the engine and switch the bike off completely.
  • Locate the Oil Drain Bolt
    • Find the oil drain bolt under the engine (refer to your manual or inspection; typically 13mm on GAS GAS EC models) .
    • Place the oil pan directly below this bolt.
  • Remove the Drain Bolt
    • Use your 13mm socket or wrench to loosen the drain bolt. Take care, as the oil may be hot.
    • Once loose, remove it by hand and allow all the old oil to drain completely into the catch pan.
    • Inspect the magnetic tip of the bolt for any metallic debris, which could indicate internal engine wear . Clean it thoroughly.
    • Remove the old crush washer and replace it with a new one.
  • (If applicable) Remove and Replace the Oil Filter
    • On some EC models, there may be a replaceable oil filter. Check your bike: if equipped, remove the oil filter cover (typically held by T30 Torx bolts), then pull out the filter and discard .
    • Lubricate the seal of your new oil filter with a touch of clean engine oil, then install it. Tighten the cover to specifications, being mindful of the O-ring condition and alignment .
  • Clean and Inspect the Oil Screen (if applicable)
    • The EC 250 may have an oil screen instead of a replaceable filter, intended to capture larger debris .
    • Remove the screen using appropriate tools, clean it thoroughly using contact cleaner, and check for metal particles .
    • Reinstall, verifying correct seating to prevent unfiltered oil from re-entering the engine .
  • Reinstall the Drain Bolt
    • After the oil has completely drained and the oil screen/filter has been serviced, reinstall the drain bolt with a new washer/crush washer.
    • Tighten the bolt to factory torque specs (refer to your owner's manual)—avoid overtightening, which can strip threads or crack the case .
  • Add Fresh Oil
    • Locate your oil fill cap (typically on the right side of the engine), unscrew it, and place a funnel in the opening.
    • Add the recommended amount of two-stroke transmission oil (usually around 750-850ml for GAS GAS EC 250, but confirm in your manual).
    • Wait a moment for the oil to settle, then check the oil sight glass or dipstick (if equipped) to ensure the correct fill level.
    • Wipe up any spills, replace the oil cap, and ensure it is snug.
  • Start the Engine and Check for Leaks
    • Start your bike and let it idle for one minute. Shut it off and check the drain plug and oil filter area for leaks.
    • Recheck the oil level now that oil has filled the passages, topping up as necessary.
  • Properly Dispose of Old Oil
    • Take your used oil (and filter/screen, if needed) to an appropriate recycling facility.

Important Call-Outs for the 2014 GAS GAS EC 250

  • This is a two-stroke engine: The 2014 GAS GAS EC 250 uses transmission oil, not traditional four-stroke engine oil. Always ensure you use the correct oil type and quantity.
  • Transmission and clutch share the same oil bath: Be consistent with maintenance intervals (generally every 10-20 hours of use or after every race/long ride).
  • Oil screen cleaning: While some models use a paper filter, the EC 250 often relies on a mesh oil screen to trap debris. Don’t skip inspecting and cleaning it, as clogged screens can lead to catastrophic engine failure .
  • Magnetic drain bolt: This is vital for catching steel shavings. Monitor it for any increase in debris—this can be an early warning sign of internal wear .
  • Always use OEM or high-quality aftermarket gaskets and washers when reassembling the drain plug and filter cover to prevent leaks.
  • Double-check torque values: Use a torque wrench if possible. Over-tightening is a common error and can damage the engine case.

Final Tips

  • Record the date and hours of this oil change in your maintenance log.
  • Periodically check your oil for discoloration or contamination between changes—early detection can prevent costly repairs.
  • For the most precise information, always consult your official GAS GAS owner’s manual for your specific year and version.

This oil change procedure is proprietary content for MotoSport.com.

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Shop Oil Fillers and Drain Plugs for a 2014 GAS GAS EC 250 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.