How to Change the Oil in a 2021 Husqvarna TC65

Shop parts for a 2021 Husqvarna TC65 Dirt Bike.

Changing the oil in your 2021 Husqvarna TC65 dirt bike is an essential maintenance task that ensures the engine performs at its best and prolongs its life. This step-by-step guide, proprietary to MotoSport.com, details the process specifically for the TC65, including the tools you'll need, crucial model-specific tips, and the exact steps for a smooth and safe oil change. Keeping up with regular oil maintenance will help you avoid costly repairs and maintain peak performance on the track or trail.

Tools and Supplies Needed

  • Socket Wrench Set (to remove the drain plug)
  • Drain Pan (for collecting old oil)
  • Funnel (to avoid spills when refilling)
  • Shop Towels or Rags (for cleanup and wiping parts)
  • Replacement Crush Washer (for the drain bolt, if needed)
  • Replacement O-rings (especially for the oil cap, recommended)
  • Engine Oil – 15W-50 four-stroke motorcycle oil, 500 ml (recommended for Husqvarna TC65)
  • Gloves (to keep your hands clean and safe)

Preparation

  • Warm Up the Engine: Briefly run your TC65 for a minute or two. Warm oil flows more easily, ensuring you drain as much old oil as possible.
  • Secure the Bike: Place the bike on a stand to keep it level and stable.
  • Clean the Area: Use a shop towel to remove dirt around the drain plug and oil fill area to prevent debris from entering the engine.

Drain the Old Oil

  • Locate the oil drain plug under the engine.
  • Position your drain pan beneath the plug.
  • Use a socket wrench to carefully remove the drain plug and let all the oil drain into the pan.
  • Be patient—let it drain completely. Rock the bike gently if necessary to ensure all oil is out.
  • Inspect the old oil for any metallic shavings, which could indicate internal engine wear.
  • Remove and inspect the oil filter screen (if equipped, location varies; check your owner’s manual). Clean the screen thoroughly and look for metal particles. Replace if damaged.
  • Replace the crush washer on the drain plug, if required.

Model-Specific Callouts for the TC65

  • Oil Capacity: Use exactly 500ml of 15W-50 oil for the 2021 TC65. Overfilling or underfilling can harm performance and reliability. Double-check your model as oil specs vary by bike; TC65 requires this specific quantity and type.
  • Plug and Cap O-Rings: Inspect O-rings on the drain bolt and oil fill cap. Replace if worn, cracked, or flattened as leaks can cause engine damage.
  • Drain Plug Location: On the TC65, the oil drain plug is easy to access underneath; always make sure the fiber washer is replaced to prevent leaks.
  • No Oil Filter Cartridge: Unlike larger Husqvarna models, the TC65 uses a mesh filter/screen rather than a traditional oil filter. Clean thoroughly and re-install during each oil change.

Reinstall the Drain Plug and Fill with Oil

  • Once the oil has completely drained, reinstall the drain plug (with new crush washer) and torque to specification if available (consult your manual for exact value, but do not overtighten).
  • Check/replace the O-ring on the oil fill cap.
  • Using a funnel, pour 500ml of 15W-50 motorcycle oil into the oil fill port (located on the engine’s right side; black cap marked ‘oil’).
  • Reinstall the oil fill cap and wipe away any excess oil.

Final Steps and Safety Checks

  • With the bike upright, start the engine and let it idle for 30-60 seconds. Turn it off and allow the oil to settle for a minute.
  • Check for any oil leaks from the drain plug or fill cap.
  • Verify oil level by removing the oil check bolt (check your manual for location and procedure; most TC65s have a check bolt instead of a sight glass). Add oil if necessary, but do not overfill.
  • Dispose of old oil responsibly at a local recycling center or auto parts store—never dump oil down the drain or on the ground.

Pro Tips for Husqvarna TC65 Owners

  • Change oil after the initial break-in period (first 2-4 hours) for new bikes, then according to your manual or more frequently if you ride in harsh conditions.
  • Tighten all bolts to factory specs: Stripped drain plugs are a common mistake on small bikes like the TC65.
  • Keep track of your oil change intervals for warranty and to optimize engine life.
  • Always use high-quality oil that meets Husqvarna’s specifications–the TC65’s 2-stroke engine is sensitive to oil quality and viscosity.

Conclusion

Changing the oil on your 2021 Husqvarna TC65 is straightforward with the right tools and process. Always use the correct oil type and amount–500ml of 15W-50 motorcycle oil–and check for leaks before hitting the track. With regular care, your TC65 will reward you with reliable performance and fun rides for years to come.

Related Shopping Categories

Shop Motor Oil for a 2021 Husqvarna TC65 Dirt Bike.

Shop Oil Filters for a 2021 Husqvarna TC65 Dirt Bike.

Shop Oil Drain Pans for a 2021 Husqvarna TC65 Dirt Bike.

Shop Tools for a 2021 Husqvarna TC65 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2021 Husqvarna TC65 Dirt Bike.

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.