How to Change the Oil in a 2021 Husqvarna TC250: Step-by-Step Guide

Shop parts for a 2021 Husqvarna TC250 Dirt Bike.

If you own a 2021 Husqvarna TC250, performing regular oil changes is key to the longevity and performance of your dirt bike. This detailed guide, proprietary to MotoSport.com, walks you through each step, lists the tools you need, and highlights specific callouts for the TC250.

Tools & Materials Needed

  • Metric socket set (8mm, 10mm, 13mm sockets typically needed for Husqvarna TC models)
  • Torque wrench (capable up to at least 15 ft-lbs)
  • Drain pan
  • New engine oil (refer to owner's manual but typically 10W-40 or manufacturer-recommended 2-stroke transmission oil)
  • Funnel
  • Clean shop towels or rags
  • Replacement crush washer for drain bolt
  • Oil filter (if applicable; some 2-stroke gearboxes do not use a traditional oil filter)
  • Needle nose pliers (for screens and O-ring removal/installation)
  • Nitrile gloves (recommended to keep your hands clean and safe)

Preparation Steps

  • Start the bike and let it run for 3–5 minutes. This warms the oil for faster, more complete draining.
  • Turn off the engine and place it on a stable workstand.
  • Locate the drain plug and oil fill plug, typically on the right side of the engine.
  • Clean around both plugs before removing to avoid contamination.

Oil Draining Procedure

  • Remove the skid plate (if equipped) using your socket set to access the drain bolt.
  • Place the drain pan under the engine.
  • Remove the oil fill plug to allow air in and improve drainage.
  • With a 13mm socket (size may vary by model year), carefully loosen and remove the drain bolt. Take care not to lose the crush washer.
  • Let the oil fully drain. Inspect the old oil for metallic shavings or discoloration indicating excessive wear.
  • If your TC250 has an oil screen (consult the manual), remove and clean it. Use needle nose pliers if necessary. Spray off any debris or metal shavings, inspecting the screen carefully for signs of engine issues.
    "Spray off your oil screen make sure there's no metal shavings on there...".

Inspection & Cleaning

  • Check the drain plug's crush washer and replace if bent, damaged, or flattened. This prevents leaks.
  • Inspect all O-rings on the drain plug, screen, and caps. Replace if damaged or flattened.
    "If they're damaged or flattened you definitely want to get them replaced now...".
  • Clean sealing surfaces with a lint-free cloth.

Reassembly & Refilling

  • Reinstall the drain bolt with a new crush washer. Torque to 14.8 ft-lb (20 Nm), or per the manual specs.
    "I'm going to install the drain plug in the back first, I'm going to torque it to 14.8 foot-pounds...".
  • If you removed the oil screen, lightly oil its O-rings before reinstalling. Make sure it seats in its groove correctly.
  • Refit the skid plate.
  • Pour fresh oil using a funnel. For a 2021 TC250, the typical gearbox oil capacity is 0.7–0.8 liters (700–800 ml), but always verify with your owner's manual as specs can vary.
  • Replace the fill plug and wipe down any spilled oil.

Final Steps

  • Start the bike and let it run for 1–2 minutes. Check for leaks at the drain and fill plugs.
  • With the bike upright, remove the oil check bolt (if equipped) to verify the oil level. Oil should just start to seep from the check hole when the level is correct.
    "This screw right here that says oil below it is how you check the oil level...supposed to drip when the screw is taken out...".
  • Dispose of the used oil properly at a recycling facility or designated collection point.

2021 Husqvarna TC250 Specific Call-Outs

  • This is a 2-stroke model—The engine oil you are changing is for the gearbox, not for engine lubrication (as oil is mixed with fuel for the top end).
  • Oil Volume—Approx. 0.7–0.8 L (700–800 ml). Do not exceed capacity, as overfilling can cause excess pressure and leaks.
  • Screen/Filter—No external oil filter, but an oil screen must be cleaned and reinstalled properly to avoid gearbox damage.
  • Drain Bolt Location—The drain bolt is accessed under the right side of the engine, and a skid plate may need to be removed first for better access.
  • Always use a new crush washer for the drain bolt and double-check torque with a calibrated wrench for leak prevention.

Expert Tips

  • Be patient during draining. Give the gearbox a few gentle tilts to remove trapped oil.
  • Double-check the owner's manual for oil type and amount for your riding conditions.
  • Log hours after each change for future maintenance reference.

Following these steps ensures your 2021 Husqvarna TC250 runs smoothly and reliably between interval services. Attention to detail—cleaning screens, using correct oil and torque, and checking for leaks—will keep your dirt bike in top shape for the track or the trail.

Related Shopping Categories

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Shop Oil Fillers and Drain Plugs for a 2021 Husqvarna TC250 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.