How to Change the Oil in a 2024 Husqvarna TX300

Shop parts for a 2024 Husqvarna TX300 Dirt Bike.

Keeping your 2024 Husqvarna TX300 in peak condition requires regular oil changes to protect your gearbox and keep shifting smooth, especially in demanding off-road environments. Follow this exclusive MotoSport.com step-by-step guide to ensure a clean, thorough, and professional oil change on your TX300 two-stroke dirt bike.

Tools and Materials Needed

  • Socket wrench set (8mm, 13mm or appropriate size for drain bolt)
  • Torque wrench (for reinstalling drain bolt to spec)
  • Oil drain pan
  • Oil funnel (with a narrow tip)
  • Measuring cup (metric, for precise oil measurement)
  • Shop towels and/or rags
  • New crush washer for drain bolt
  • 800 ml of high-quality 10W-40 gear oil (as recommended in the owner's manual)
  • Motocross stand (optional, but highly recommended)
  • Nitrile gloves (optional, for a cleaner job)

Preparation and Safety

  • Work in a well-ventilated area, free of ignition sources.
  • Start with the engine off and the bike cool, or run the bike for just a minute to warm the oil slightly for easier draining. Do not let the engine get hot.
  • Place the bike upright on a motocross stand for stability and complete drainage.

Step-by-Step Oil Change Process for the 2024 TX300

  1. Clean the Area:
    • Use shop towels to wipe dirt and debris away from the transmission drain bolt and the oil fill cap. This prevents contamination when opening the cases.
  2. Remove the Drain Bolt:
    • Position the oil drain pan beneath the transmission case drain bolt, which is located on the bottom of the right side of the engine (check your owner’s manual for the exact location).
    • Use the correct size socket to loosen and remove the drain bolt. Be careful to catch it and its crush washer as it drops, preventing it from falling into your oil catch pan.
  3. Drain the Old Oil:
    • Allow all oil to drain thoroughly into your pan. To avoid a mess, some riders use a funnel or create a foil ‘chute’ to direct the oil away from frame parts and skid plates.
    • Let the bike sit for a few minutes to ensure all old oil exits the gearbox.
  4. Inspect & Clean the Drain Bolt:
    • Wipe the bolt clean and inspect it for metal filings or excessive debris stuck to the magnet (if equipped). This can indicate premature clutch or gear wear.
    • Replace the crush washer with a new one every oil change to prevent leaks.
  5. Reinstall Drain Bolt:
    • Thread the drain bolt back in by hand to avoid cross-threading, then torque it to the manufacturer’s specification using a torque wrench. Over-tightening can damage the aluminum case.
  6. Add New Oil:
    • Remove the oil fill cap (on the clutch cover’s right side).
    • Using a measuring cup, pour in precisely 800 ml of high-quality 10W-40 gear oil (such as Motorex, Bel-Ray, or any oil specifically recommended by Husqvarna for your model).
    • Use a funnel to prevent spills.
    • Do not exceed or under-fill. Too much or too little can damage your gearbox and clutch.
  7. Reinstall Fill Cap and Inspect:
    • Wipe away any spilled oil, reinstall the fill cap, and tighten it securely by hand.
    • Double-check the drain bolt and fill cap for tightness and leaks.
  8. Final Checks:
    • Start the engine and let it idle briefly, then shut it off and inspect all area for leaks.
    • Recycle old oil at an approved facility; never pour it down drains or onto the ground.

2024 TX300 Model-Specific Notes

  • Oil capacity: 800 ml. Stick to this amount—overfilling can cause clutch drag and premature seal failure.
  • Recommended oil viscosity: 10W-40 gear oil or manufacturer-approved substitute; always check your owner’s manual.
  • The TX300 shares engine design cues with the 2024 TE300 and 2024 KTM 300 models, so procedures and specs are very similar.
  • No traditional oil filter—just a magnetic drain bolt. Always check for metallic debris.
  • Replace the crush washer every change to prevent leaks and preserve the aluminum threads.
  • Changing transmission oil frequently (every 5–10 hours, or after heavy riding) is recommended for competitive or extreme conditions.

Disposal and Maintenance Tips

  • Transport used oil to a local recycling center or dealer. Never dispose of oil in regular trash or drains.
  • Inspect your gearbox oil for cloudiness, metallic shimmer, or burnt odor—these signal possible trouble requiring further inspection.
  • Monitor oil level regularly between changes, especially after heavy rides or races.

Keep your 2024 Husqvarna TX300 running flawlessly by following these detailed, MotoSport.com-exclusive steps for your next oil change.

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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.