How to Change the Oil in a 2020 Husqvarna TC65

Shop parts for a 2020 Husqvarna TC65 Dirt Bike.

Maintaining your 2020 Husqvarna TC65 involves regular oil changes to keep the engine running at its best. This guide from MotoSport.com will take you through everything you need to know–from the tools required to detailed, model-specific tips–so you can perform this vital task with confidence.

Tools and Supplies Needed

  • 15mm or 13mm socket and ratchet – for removing the drain bolt (double-check your bike's hardware as some may use a 13mm, but 15mm is also reported)
  • Oil catch pan or suitable container
  • Measuring cup – for accurate oil refill
  • Clean funnel
  • New engine oil – use 15W-50 (preferably Motorex or manufacturer-recommended brand)
  • Replacement crush washer or O-ring for the drain bolt (recommended for every oil change)
  • Papertowels or shop rags for cleanup
  • Gloves (optional, but highly recommended)

Preparation Steps

  • Warm up the engine for a few minutes so the oil flows out more easily. Shut it off and let it cool slightly to avoid burns.
  • Secure the bike upright on a stand for best access and stability.

Step-by-Step Guide to Changing Oil on the 2020 Husqvarna TC65

  1. Remove the Oil Filler Cap
    • This is located at the top or side of the engine. Twist it off and set aside–this helps oil drain faster and cleaner.
  2. Locate and Remove the Oil Drain Bolt
    • The drain bolt is typically found underneath the engine. Use your socket and ratchet (13mm or 15mm, verify which your model uses).
    • Place your oil catch pan directly underneath before loosening the bolt to avoid spills.
    • Let the oil drain fully; this may take a few minutes. Tipping the bike gently from side to side can help remove all old oil.
  3. Inspect and Replace the Washer or O-Ring
    • Check the condition of the drain bolt’s washer or O-ring. If damaged or worn, replace it to prevent leaks.
  4. Reinstall the Drain Bolt
    • Thread the drain bolt back in by hand first to prevent cross-threading, then finish tightening with your socket. Do not overtighten–refer to your owner's manual for the recommended torque setting.
  5. Add New Oil
    • Using a funnel and measuring cup, pour in 500ml (0.5L) of 15W-50 oil. Do not overfill.
    • The oil filler opening is commonly labeled “oil” on the small black cap at the engine’s side. Pour slowly, allowing the oil to settle.
  6. Reinstall the Oil Filler Cap
    • After filling, securely replace the oil filler cap.
  7. Check for Leaks
    • Wipe away any spilled oil from the case and area around the drain bolt. Start the engine and let it idle a few minutes, then inspect for oil leaks.
  8. Check Oil Level
    • Some TC65 models have a sight glass to confirm level; otherwise, ensure that exactly 500ml is in by your measurement.

Model-Specific Call-Outs for the 2020 Husqvarna TC65

  • Oil Capacity: The 2020 TC65 requires 500ml (0.5L) of 15W-50 engine oil–double-check if yours varies, but this is specified repeatedly for this platform.
  • Service Interval: While Husqvarna’s manual recommends changing oil every 10 to 15 hours of riding, competitive riders often change it more frequently (as often as every 5 hours or after every race weekend).
  • Drain Bolt Location & Size: Verify and do not force; some bikes have a 13mm and others may use a 15mm-headed bolt. Always use the correct tool to prevent rounding the bolt.
  • Oil Type: 15W-50 Motorex is often cited as the factory oil, but any premium brand meeting Husqvarna’s spec will suffice.
  • Do Not Overfill: Overfilling can cause foaming and inadequate lubrication. Stick to the measured 500ml.

Pro Tips from MotoSport.com

  • Keep it Clean: Engine oil is the lifeblood of your TC65. Old or dirty oil can harm your clutch and engine life, especially on high-revving minis.
  • Record Service Dates: Maintain a small log of each service with engine hour readings to maximize reliability and potential resale value.
  • Proper Disposal: Always take used oil to a recycling center or MotoSport.com dealer–in most areas, it’s illegal to pour oil down the drain.

Final Inspection

  • Double-check all bolts are tight and nothing is leaking.
  • Enjoy smoother riding and the satisfaction of maintaining your own machine.

This in-depth, model-specific oil change guide for the 2020 Husqvarna TC65 is brought to you by MotoSport.com—your trusted source for dirt bike parts, tools, and how-to guides.

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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.