How to change the oil in a 2024 GAS GAS EC 300 Dirt Bike

How to Change the Oil in a 2024 GAS GAS EC 300

Shop parts for a 2024 GAS GAS EC 300 Dirt Bike.

Changing the oil regularly in your 2024 GAS GAS EC 300 is essential for the longevity and reliability of your dirt bike–s transmission and clutch system. While the procedure for most modern two-stroke EC models is straightforward, there are specific considerations and tools necessary for this particular make and model. MotoSport.com provides this exclusive guide to ensure you get the job done right.

Tools and Supplies Needed

• 6mm Allen socket or Allen wrench for drain and fill plugs
• Socket wrench (compatible with your Allen socket)
• Drain pan for used oil
• Funnel (preferably long and precise) due to small fill plug opening
• Clean rags or paper towels
• Nitrile gloves (to keep hands clean and protected)
• Replacement transmission oil (consult your owner–s manual for recommended type)
• Optional: Brake cleaner spray for cleaning drain plug
• Replacement magnetic drain plug washer if necessary
• Torque wrench for proper reinstallation of drain/fill plug
• Flathead screwdriver or appropriate tool if your skid plate or accessory covers require removal

Step-by-Step Process

• Warm Up the Engine:
  • Idle the bike for a few minutes. Warm oil drains more easily, carrying away debris inside the cases.
• Stabilize the Bike:
  • Position the bike upright on a level surface using a center stand or lift. It–s best to keep it as vertical as possible for complete oil drainage.
• Remove Skid Plate or Accessories (If Installed):
  • Many 2024 EC 300 models have a skid plate covering the bottom of the engine. Locate and remove mounting bolts to access the drain plug. Some plates have a service cut-out, but full removal is often easier and less messy.
• Locate and Remove the Drain Plug:
  • The drain plug is found on the underside of the engine, below the transmission case. It–s a 6mm Allen bolt.
  • Place your drain pan directly beneath the plug. Carefully loosen and remove the plug, ensuring you don–t drop it into the oil.
  • Allow the oil to drain completely. Tilt the bike slightly, if needed, to evacuate any remaining oil.
• Inspect and Clean the Drain Plug:
  • The OE drain plug is magnetic and may have some metal particles attached; this is normal wear from clutch and gearbox components. Clean thoroughly with a rag or use brake cleaner for stubborn debris.
  • Examine the crush washer/O-ring and replace if damaged.
• Reinstall the Drain Plug:
  • Thread the plug by hand to avoid cross-threading, then tighten to the manufacturer–s specified torque with your torque wrench. Typical range is 10–15 Nm (always check your manual for the exact spec).
• Remove the Oil Fill Plug:
  • The fill plug is located on the right side of the engine case. The orifice is notably small on these models, so a narrow funnel is highly recommended for a spill-free process.
• Add Fresh Transmission Oil:
  • The 2024 EC 300 takes approximately 900cc (0.9L) of oil. Consult your owner–s manual for oil viscosity and product recommendations.
  • Pour the measured oil into the engine slowly to avoid overfilling or spillage.
  • Important: There is no traditional oil filter to change on this two-stroke; focus is solely on the transmission/clutch oil.
• Reinstall the Fill Cap:
  • Ensure the area is clean of oil residue before replacing the fill cap.
• Final Step – Wipe Down and Dispose Oil Responsibly:
  • Cleanup any drips or spills. Store used oil in a suitable container and recycle it at your local waste facility.
  • Reinstall the skid plate or accessories.

Special Call-Outs for the 2024 GAS GAS EC 300

• Small Fill Plug Opening: The 2024 EC 300 continues the tradition of having a small, sometimes awkwardly located fill plug on the right side of the case. Use a clean, narrow funnel for precision.
• No Oil Filter: As with all modern two-stroke Enduro bikes, you only need to change the transmission/clutch oil (not engine crankcase oil). No oil filter is involved, unlike four-stroke models.
• Magnetic Plug: Designed to capture metal shavings from the clutch and transmission – always inspect and clean this after each change.
• Oil Capacity: Do not overfill. 900cc (0.9L) is the correct capacity for the 2024 EC 300, just as with prior years.
• Skid Plate Access: Aftermarket or factory skid plates may partially obstruct the drain plug. Remove for easiest and cleanest service.
• Recommended Interval: In racing or aggressive riding conditions, change oil after every significant event or every 10–15 hours of use. Less frequent recreational riders may follow a 20-hour schedule, but err on the side of caution for best longevity.

Conclusion

MotoSport.com encourages every 2024 GAS GAS EC 300 owner to perform this maintenance regularly. Clean oil means longer clutch and gear life and consistently smooth shifting. Always reference your owner–s manual and use the highest quality oil, tools, and replacement parts. If you have questions or need specific products, our team is here to help you get back on the trail.

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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.