How to Change the Oil in a 2019 GAS GAS TXT RACING 280

Shop parts for a 2019 GAS GAS TXT RACING 280 Dirt Bike.

  • The following step-by-step guide is proprietary to MotoSport.com and specifically tailored for the GAS GAS TXT RACING 280 (2019 model). Changing the oil in your trials bike is foundational for long engine life and peak performance. While the process is straightforward, there are several model-specific details and call-outs every owner must know.

Tools and Supplies Needed

  • Socket set (with appropriate metric sockets, typically 13mm or 17mm drain bolt)
  • Torque wrench
  • Flathead screwdriver (if necessary for access panels)
  • Oil drain pan
  • Funnel
  • Clean rags or shop towels
  • New gear oil (Recommended: GRO Gear Trans 10W30 synthetic or similar premium 10W30 transmission oil)
  • Replacement crush washer for drain bolt (recommended but optional)
  • Latex or nitrile gloves (optional, for cleanliness)

Preparation Steps

  • Ensure the bike is completely cool before beginning.
  • Find a level surface and use a bike stand or secure resting position to keep the bike upright.
  • Refer to owner's manual for additional safety notes and tips.

Drain the Old Oil

  • Locate the engine drain bolt on the bottom of the engine casing. On the 2019 TXT RACING 280, the bolt is typically easy to access without removing the skid plate, but if you need better access, use the correct size socket to remove the plate.
  • Place the oil pan directly under the bolt.
  • Use the appropriate socket and gently loosen the drain bolt. Remove it carefully and let the oil flow into the pan. Watch for the crush washer–do not lose it.
  • Allow the oil to drain completely. Tilting the bike slightly (away from the stand) can help remove any residual oil, but always be cautious to avoid spills.

Inspect and Clean

  • Inspect the old oil: thick, grainy, or metallic-flecked oil can indicate deeper engine issues.
  • Check the drain bolt and especially any magnetic end for metal shavings.
  • Wipe the drain bolt clean and replace the crush washer if it's deformed or worn.
  • Before reinstallation, clean the area around the drain plug port with a shop rag. Do not overtighten the drain bolt during reinstallation—these threads strip easily.

Refill with New Oil

  • Locate the oil filler cap (typically on top or the right side of the gearbox case). Remove the cap.
  • Insert a funnel and pour in the recommended oil. The TXT RACING 280 requires approximately 400-450cc (0.4-0.45L) of oil. Do not overfill.
  • If your model features a sight glass, check the oil level with the bike straight up; the oil should be just at or slightly below the center line.

Final Steps and Best Practices

  • Replace the oil filler cap securely.
  • Start the bike and let it idle for a minute to circulate the new oil, then shut off and let it settle.
  • Check for leaks at the drain and fill caps.
  • After a minute, inspect the oil level again and top up if necessary.
  • Dispose of the old oil responsibly at an oil recycling location or auto parts store.

2019 GAS GAS TXT RACING 280: Special Call-outs

  • Oil Spec: Use premium 10W30 transmission oil (such as GRO Gear Trans), as regular engine oil may not provide ideal clutch performance.
  • Correct Oil Capacity: 400-450cc–do not overfill. Overfilling can affect shifting and clutch feel.
  • Drain Plug Threads: Aluminum cases are soft; always start threading by hand and torque to manufacturer's spec (typically around 10-15Nm–refer to manual).
  • Draining Tips: Tilt the bike gently to ensure all old oil is removed. Never force the drain plug tight; overtightening is common and can strip the threads.
  • Air Filter Maintenance: Always check and service the air filter in conjunction with oil changes for best engine life.

Why Change Oil Regularly?

  • Fresh oil prolongs clutch, gearbox, and engine life, provides smoother shifting, and ensures consistent performance—especially vital for trials bikes subjected to frequent clutch use and low-speed operation.

Oil Change Interval

  • For the 2019 GAS GAS TXT RACING 280, change oil every 15-25 hours of use, or more frequently if riding in wet, sandy, or dusty conditions. Confirm the interval in your owner’s manual.

Need More Help?

  • If you have trouble accessing the drain bolt, stripping threads, or have questions on oil type, always consult an authorized GAS GAS dealer or experienced motorcycle technician.

Disclaimer: This oil change guide is written for MotoSport.com and based on available manufacturer data and expert experience. For detailed torque specs or further maintenance tasks, refer to your official GAS GAS TXT RACING 280 service manual.

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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.