How To Change the Oil in a 2018 Husqvarna TE300

Shop parts for a 2018 Husqvarna TE300 Dirt Bike.

  • Tools and Supplies Needed:
    • 8mm or 13mm socket and ratchet (check your drain bolt size first)
    • Drain pan or oil catch container
    • Funnel
    • New gearbox oil (recommended: fully synthetic, 15W-50 or 10W-40, see manual for preference)
    • Crush washer for drain bolt (replace each change if possible)
    • Clean rags
    • Torque wrench (for proper drain and fill bolt tightening)
    • Latex or nitrile gloves (optional, but helps keep hands clean)

Step-by-Step Oil Change Instructions

  • Warm Up Your Bike
    • Run the engine for a few minutes to warm the oil. This helps it drain more thoroughly and brings particulates with it.
    • Safety Note: Let the engine cool slightly before handling; the engine and oil can become very hot.
  • Position the Bike
    • Set the bike on a stand so it's upright and stable.
    • Remove the skid plate if necessary for easy drain bolt access.
  • Remove the Drain Bolt
    • Place your drain pan beneath the engine's drain bolt (usually at the bottom or side of the crankcase).
    • Use the socket to carefully loosen and then remove the drain bolt. Allow oil to drain fully.
    • 2018 TE300 Specific Tip: The drain bolt should be torqued to the manufacturer's specification, typically about 11 ft-lbs when reinstalled. Check your owner's manual for confirmation

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    • Remove the old crush washer; replace it with a new one before reassembly.
  • Clean and Inspect
    • As the oil drains, inspect the drained oil for any metal flakes or debris, which could indicate gearbox wear. Some paste-like residue is normal during early services .
    • Wipe down the magnet on the drain bolt (if equipped) and ensure both the bolt and case surface are free from debris.
  • Refit Drain Bolt
    • Install the new crush washer on the bolt and refit the bolt by hand. Finish with a torque wrench set to the recommended spec (usually 11 ft-lbs)

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  • Add New Oil
    • Remove the fill plug on the side of the case (check owner's manual or refer to markings on your case cover).
    • Using a funnel, slowly pour in the manufacturer recommended oil. For the 2018 TE300, the capacity is near 800 ml (0.8 L)–this is close to a full quart

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    • Always stop adding oil once it starts dripping out of the oil level checker hole. This hole is typically located partway up the clutch cover. Replace the level plug as soon as oil begins to drip out strongly

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  • Check For Leaks
    • Double-check the drain and level plugs for tightness. Start the engine briefly (about 30 seconds) and inspect for leaks.
  • Dispose of Old Oil Properly
    • Transport your used oil to a proper recycling center or auto parts store that accepts oil disposal.

Model-Specific Call-Outs for the 2018 Husqvarna TE300

  • Drain Bolt Tightening Spec: Always use a torque wrench; overtightening can strip threads in the aluminum case (~11 ft-lbs)

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  • Oil Type: The manual recommends a fully synthetic, high-quality transmission oil such as 15W-50 or 10W-40. For most riding, 10W-40 is sufficient, but use 15W-50 in very hot climates for better thermal stability

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  • Crush Washer: Replace the copper crush washer with each oil change to ensure a proper seal and prevent leaks .
  • Interval: For new bikes, perform the first oil change after 10 hours or the initial break-in period. For ongoing maintenance, change the transmission oil every 10–15 hours for optimal gearbox health, especially in severe or racing conditions .
  • Inspect Old Oil: During the first oil changes, check the drained oil for a sparkly, paste-like texture—this is normal break-in debris, but watch for large metallic chunks, which are a red flag .
  • Environmental Note: The TE300 is a 2-stroke bike; only its gearbox/transmission oil is changed with this process (engine “oil” mixing is handled separately via premix or oil-injection systems).
  • Do Not Overfill: Overfilling can lead to shifting issues or leaks. Use the level hole as your indicator rather than filling to a set volume alone

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Final Checklist Before Your Next Ride

  • Verify both drain and level/fill bolts are tight to the proper torque specification.
  • Wipe down any spilled oil to prevent dirt build-up or potential fire risk.
  • Record the date and engine hour reading for your maintenance log.
  • Inspect for leaks after your first short ride; retorque bolts if needed.
For more expert dirt bike maintenance tips, shop tools, and OEM parts, trust MotoSport.com—your source for factory gear and rider support.

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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.