How to Change the Oil in a 2023 Husqvarna TC65 – MotoSport.com

Shop parts for a 2023 Husqvarna TC65 Dirt Bike.

Keeping up with routine maintenance is crucial for the performance and longevity of your dirt bike. One of the most important—and frequently needed—tasks for the 2023 Husqvarna TC65 is an engine oil change. Here is a comprehensive, proprietary MotoSport.com guide for oil changes on your TC65, with every step, tool, and model-specific detail you need to complete the job safely and correctly.

Tools and Supplies Needed

  • Socket wrench & suitable sockets (typically 8mm or 13mm, confirm in your owner's manual)
  • Drain pan or oil catch container
  • Funnel (narrow-tip recommended)
  • 500ml of high-quality 15W50 4T engine oil (KTM and Husqvarna recommend Motorex Top Speed 4T 15W50 or equivalent)
  • New crush washer for drain bolt (optional but recommended)
  • Shop towels or rags
  • Torque wrench (for accurately tightening bolts)
  • Replacement O-ring for drain bolt or oil fill cap (optional, inspect before starting)
  • Nitrile gloves (for cleanliness and safety)

Preparations

  • Warm up the engine for a few minutes to thin the oil, making it easier to drain completely. Let the engine cool to a safe handling temperature before working.
  • Set the bike upright using a stand on a level surface to ensure complete drainage.
  • Gather all your tools and supplies before you start.

Step 1: Remove the Oil Fill Cap

  • Locate the oil filler cap on the right side of the engine. Unscrew and set aside. This allows air in, promoting full drainage.

Step 2: Drain the Old Oil

  • Position your drain pan underneath the engine's oil drain bolt (bottom of the right side case).
  • Use your socket wrench to carefully loosen and remove the drain bolt. Allow the oil to drain completely—this can take several minutes.
  • Inspect the drain bolt: check for any metal shavings or debris. Clean the bolt thoroughly.
  • If your TC65's drain bolt uses a crush washer, replace it to ensure a proper seal.

Step 3: Optional – Check/Replace O-rings

  • Inspect the O-ring on the drain bolt and oil fill cap. If they appear damaged, flattened, or brittle, replace them now to prevent leaks.

Step 4: Reinstall the Drain Bolt

  • Thread the drain bolt (with new crush washer if needed) back into place by hand to prevent cross-threading.
  • Use your torque wrench to tighten the bolt to the manufacturer's recommended spec. Most Husqvarna/KTM 65 models call for approximately 14 Nm (10.3 ft-lbs), but always verify in your owner's manual for the TC65's specific value.

Step 5: Add New Oil

  • With a funnel, pour in 500ml of high-quality 15W50 4T oil through the fill hole. Do not overfill.
  • After filling, reinsert and tighten the oil fill cap.

Step 6: Run and Check

  • Start the engine and let it run for a minute. This circulates the oil through the system, filling the oil galleries and filter.
  • Turn off the engine and allow it to rest for several minutes.
  • Remove the fill cap and check the oil level. Top off if needed, but do not exceed the full mark.
  • Check around the drain bolt and fill cap for leaks. Tighten further or replace O-rings if necessary.

Model-Specific Call-Outs: 2023 Husqvarna TC65

  • Use only 500ml of oil—overfilling can cause pressure build-up and leaks. The 65cc Husqvarna shares engine design with KTM and GasGas 65 models, so most procedures and specs cross-apply.
  • Change the O-rings and crush washers regularly to prevent leaks, especially if you notice oil seepage or if they appear visually worn.
  • Visually inspect for any metal fragments in old oil or on the drain bolt. Excessive shavings may point to internal wear and should be addressed by a professional technician.
  • Always use a high-quality oil formulated for high-RPM, small-displacement 2-stroke competition engines. Using the wrong oil can lead to clutch slippage or premature engine wear.

Disposal of Used Oil

  • Transfer used oil to a sealed container and take it to a local recycling center or auto shop that accepts used oil. Never pour oil down the drain or on the ground.

Pro Tips from MotoSport.com

  • Change your oil after every few ride hours, or as recommended in your owner's manual, especially after riding in harsh or muddy conditions.
  • Keep spare crush washers and O-rings in your toolbox for convenient maintenance intervals.
  • Write down the date and hours on the bike at each oil change to maintain a proper maintenance record.

By following these steps, your 2023 Husqvarna TC65 will stay running strong and ready for the next track or trail adventure. For OEM and performance oils, gaskets, and service parts, visit MotoSport.com for the best selection and professional advice.

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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.