How to Change the Oil in a 2013 GAS GAS EC250

Shop parts for a 2013 GAS GAS EC250 Dirt Bike.

Changing the oil in your 2013 GAS GAS EC250 is essential for ensuring optimum engine performance and extending the life of your dirt bike. Below, MotoSport.com provides a comprehensive, model-specific guide on how to complete this job safely, efficiently, and correctly.

Tools and Supplies Needed

  • New transmission oil (refer to your owner's manual for specification and capacity)
  • Drain pan
  • 8mm and 13mm sockets or wrenches
  • Allen key set (primarily 8mm)
  • Rags or shop towels
  • Torque wrench (recommended for proper plug tightening)
  • Oil funnel (optional, but helps prevent spills)
  • Rubber gloves (to keep hands clean)
  • New crush washer for the drain bolt (recommended with each oil change)
  • Parts cleaner or brake cleaner (to clean the drain plug and screen)

Important Notes for the 2013 GAS GAS EC250

  • The 2013 GAS GAS EC250 uses a 2-stroke engine, so its engine oil is different from 4-stroke models. The official owner's manual discusses changing the oil pump and cleaning the oil screen as maintenance steps for this engine type.Transmission oil (not engine oil) must be exchanged regularly because internal engine parts receive lubrication primarily from pre-mixed fuel, but the transmission needs fresh oil for optimal shifting and clutch performance. (inferred from owner's manual and general 2-stroke maintenance practices)
  • Be careful not to confuse the transmission oil with the 2-stroke pre-mix oil tank if your EC250 is equipped with an auto-lube system.(manual reference)
  • Always replace the crush washer to ensure a leak-free seal on the drain bolt.(recommended best practice)

Step-by-Step Oil Change Instructions

  • Warm up the Engine:
    • Start and run your EC250 for 3–5 minutes. Warming the engine thins the transmission oil and ensures a more complete drain.
  • Stabilize the Bike:
    • Place your bike on a stand specifically designed for dirt bikes. For GAS GAS bikes, ensure the stand doesn't obscure the drain bolt (a common issue noted in later years).
  • Remove the Drain Plug:
    • Locate the transmission oil drain bolt, generally on the lower right side of the engine case. Use an appropriate socket or Allen key to remove it.
    • Allow oil to fully drain into a pan.
    • Inspect and clean the drain plug and, if equipped, the oil screen (check for metal shavings or debris which could indicate internal wear).
    • Replace the crush washer on the drain plug before reinstalling.
  • Reinstall the Drain Plug:
    • Thread the drain plug by hand to avoid cross-threading, then snug it with a wrench. Use a torque wrench to tighten it to factory specifications—over-tightening can strip the threads on the engine case.
  • Add New Transmission Oil:
    • Remove the transmission oil fill cap (usually located above the clutch cover on the right side of the engine).
    • Use a funnel to pour in the recommended amount and type of transmission oil; check your manual for the precise specification (often around 750–800ml for this model, but always verify).
  • Check Oil Level:
    • Some EC250 models use a sight glass; others have an oil level bolt that you loosen until oil just begins to seep out, confirming proper fill.
  • Reinstall Fill Cap:
    • With oil level confirmed, reinstall the oil fill cap and tighten securely by hand.
  • Clean and Test:
    • Wipe down any spilled oil. Start the engine and let it idle for a minute, then check for leaks at the drain and fill points. Address any seepage immediately.
  • Dispose of Old Oil Properly:
    • Pour the used oil into a sealed container and take it to a recycling center or automotive parts store that accepts used oil.

2013 GAS GAS EC250-Specific Tips and Call-Outs

  • Always use oil rated specifically for 2-stroke transmissions. Regular automotive motor oil is not acceptable.
  • If your model was fitted with an oil screen, clean and inspect it every change (and replace if damaged).
  • If you notice metal shavings or cloudy oil, further inspect your clutch components or transmission internals.
  • 2-stroke models do not use an engine oil filter—do not search for or attempt to replace one.
  • If the drain plug appears worn or stripped, replace it immediately to prevent catastrophic oil loss during riding.
  • Always check for leaks after your first ride post-service, and re-tighten as necessary.

This proprietary guide is provided by MotoSport.com for the safe, effective, and specific maintenance of your 2013 GAS GAS EC250 dirt bike. Always consult your owner's manual and adhere to environmental guidelines for fluid disposal.

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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.