How to Change the Oil in a 2023 GAS GAS TXT RACING 300

Shop parts for a 2023 GAS GAS TXT RACING 300 Dirt Bike.

Maintaining the engine oil in your 2023 GAS GAS TXT RACING 300 is essential for optimal performance and engine longevity. Proper oil changes not only enhance clutch operation and reliable shifting but also protect internal gear components. This guide will walk you through all the tools, steps, and model-specific precautions you need to complete a robust oil change on your trials bike. All instructions below are proprietary for MotoSport.com customers.

Tools and Materials Needed

  • Socket set or spanner set (correct metric size for drain bolt and filler cap)
  • Torque wrench (with settings to 23.5-25.5 Nm)
  • Oil drain pan
  • Funnel (narrow, for filling transmission case)
  • Clean rags or shop towels
  • Fresh transmission oil: Specialist gear oil recommended (refer to owner's manual, many prefer GRO gear oil). Consult your dealer or manual for recommended viscosity and volume
  • Optional: replacement washer or O-ring for the drain bolt
  • Gloves (to keep hands clean)

Preparation

  • Warm up the engine for 2–3 minutes to help the oil flow out more easily.
  • Stop the engine, turn off the ignition, and place the bike on a stable stand with the suspension vertical.
  • Clean the area around the oil fill and drain plug with a rag to prevent dirt ingress during the oil change.

Step-by-Step Oil Change

  1. Locate and Remove the Drain Plug
    Find the transmission oil drain plug underneath the right side crankcase. Position your drain pan underneath it. Use the correct size spanner or socket. The bolt may be slow to remove—work patiently to avoid stripping.
    Model call-out: On the TXT Racing 300, components around the plug can collect debris, so cleaning before removal is important.
  2. Drain the Oil Completely
    Allow the old oil to drain fully—this may take several minutes. Check for metallic debris in the old oil or on the drain plug, which could signal internal wear. Replace the drain plug washer or O-ring if needed for a proper seal.
  3. Reinstall and Torque the Drain Plug
    Once oil ceases to drip, wipe the plug clean, and reinstall by hand to avoid cross-threading.
    Tighten with a torque wrench to 23.5-25.5 Nm (refer to older TXT 300 specs, but confirm your owner's manual for exact numbers for 2023).
    Model call-out: The TXT crankcases are aluminum, so avoid overtightening to prevent thread damage.
  4. Add the New Oil
    Remove the filler cap (on the right-hand side of the engine). Insert a funnel. Pour in the recommended amount and type of transmission oil as specified in your manual. Typical oil volume is around 350 to 400 mL for most modern trials bikes, but always check the 2023 specification.
  5. Check the Oil Level
    Most TXT Racing 300s do not have a traditional dipstick. After filling, stand the bike vertically, wait a moment for oil to settle, and visually inspect the fill plug area.
    Model call-out: Overfilling can cause clutch drag—do not exceed capacity.
  6. Install the Filler Cap
    Replace and hand-tighten the filler cap. Clean any spilled oil.
  7. Start and Inspect
    Start the engine and let it idle for 30 seconds. Shut off and inspect for leaks at the drain and fill locations.
  8. Dispose of the Old Oil
    Take used oil to a recycling facility—never dispose of it in household waste.

Model-Specific Notes for the 2023 GAS GAS TXT RACING 300

  • Plug Torque: Use 23.5-25.5 Nm, but check your exact year specification for any updates. The crankcase is soft aluminum—strip threads are a common mistake with overtightening.
  • Clutch Sensitivity: These bikes are known for clutch response; fresh, proper-spec oil improves performance and prevents quick wear.
  • Oil Type: Owners and experts often recommend GRO gear oil or other trials-specific transmission oils for the best feel and longevity. Using certified transmission fluid protects the bike's gearbox and clutch pack.
  • Oil Change Interval: GAS GAS recommends changing transmission oil at least every 6,000 km (approx. 4,000 mi), but for frequent off-road use or heavy trials activity, change it more often.

Pro Tip

  • After your first ride following the oil change, check under the bike and around the drain plug for leaks. Re-torque if necessary. Always use quality oil for consistent clutch and shifting performance.

Following this robust process ensures your 2023 GAS GAS TXT RACING 300 remains reliable and ready for the next section. For all your oil, tools, and parts, trust MotoSport.com.

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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.