How to Change the Oil in a 2020 Husqvarna FC450HQ: MotoSport.com Proprietary Guide

Shop parts for a 2020 Husqvarna FC450HQ Dirt Bike.

Regular oil changes are vital for maintaining your 2020 Husqvarna FC450HQ). This step-by-step guide equips you with all the details and expert tips needed to protect your engine and maximize ride time.

Tools and Supplies Needed

  • 13mm wrench or socket (for the oil drain bolt)
  • New oil filter (OEM recommended or quality aftermarket)
  • Fresh engine oil (refer to owner's manual for exact type and capacity; for this model, use premium 4-stroke motorcycle oil, generally around 1.1 liters)
  • Replacement O-rings/seals (for drain bolt and oil screens if worn)
  • Parts cleaning solvent/degreaser (optional but useful for cleaning screens and plugs)
  • Oil catch pan/container
  • Shop rags or paper towels
  • Funnel
  • Torque wrench (recommended for re-tightening bolts to manufacturer spec)
  • Gloves (to keep your hands clean)

Preparation Steps

  • Warm up the engine for a few minutes. This thins the oil for a more complete drain. Do NOT skip this as cold oil will leave more debris in your engine. Be careful – hot oil can burn.
  • Turn off the engine and place the bike upright on a level surface, preferably using a center stand.
  • Remove the skid plate or engine guard if equipped to access the drain plug.

Draining the Old Oil

  • Position your oil catch pan directly under the drain bolt, located at the lowest point of the engine case.
  • Using a 13mm wrench or socket, carefully loosen and remove the drain plug. Allow all oil to drain completely. Inspect the drain plug's magnetic tip for metal debris (minor flecks are normal, but large chunks may indicate internal issues – seek a mechanic if concerned).
  • Locate and remove both oil screen plugs: the short oil screen and the long oil screen. Each is accessible from the sides of the engine and helps catch larger debris and contaminants.
  • Gently pull out the screens. Clean them thoroughly with solvent and inspect for excessive debris or damage. Replace O-rings if needed to prevent leaks.
  • Let oil drain entirely. Wipe the drain area and plugs clean before reinstallation.

Replacing the Oil Filter

  • Remove the oil filter cover. Note orientation for proper reassembly.
  • Pull out the old oil filter and install a new, properly oriented filter. Lightly oil the new filter's O-ring before installation.

Reinstalling Drain Bolt and Oil Screens

  • Insert cleaned oil screens (short and long) back into place.
  • Replace any O-rings that appear worn or flattened.
  • Reinstall oil screen plugs and drain bolt. Use a torque wrench to tighten bolts to manufacturer specs (typically: 15 Nm for oil drain plug, but confirm in your service manual).

Adding New Engine Oil

  • Insert a funnel into the oil fill port located near the top of the engine.
  • Pour in fresh engine oil (about 1.1 L, but always check your manual for exact capacity).
  • Let oil settle for a minute. Check the sight glass or dipstick for proper level.
  • Add more if needed, but do not overfill — too much oil can harm engine performance.
  • Reinstall and tighten the oil fill cap.

Final Checks and Startup

  • Wipe down any spilled oil on the motorcycle and working area.
  • Double-check that all plugs, screens, and the fill cap are secure.
  • Start the engine and let it idle for 1-2 minutes.
  • Shut off, wait briefly, then check the oil level again. Top off if needed, but avoid overfilling.
  • Inspect for leaks around the drain plug, oil screens, and filter.

Model-Specific Notes for the 2020 Husqvarna FC450HQ

  • This model has two oil screens (short and long) in addition to the oil filter – both must be cleaned or replaced every oil change.
  • The oil capacity is typically 1.1 liters, but always verify in your manual as aftermarket clutch covers and other changes can alter volume slightly.
  • The oil drain plug is 13mm and includes a magnetic tip to help catch debris.
  • Frequent oil changes are highly recommended – Husqvarna recommends changes every 5-10 engine hours for racing or hard trail use.
  • High-quality synthetic or race-spec 4-stroke oils (such as Motorex, Motul, or Maxima) are best for the FC450HQ's high-revving engine.
  • A small amount of metallic "sludge" on the screens and magnetic plug is normal; large particles may indicate internal wear.
  • Annually check the condition of O-rings on both screens and the oil drain bolt to avoid leaks.

Disposal

  • Recycle used oil and filters at your local MotoSport.com partner or auto parts store.
  • Never dump oil outdoors or in the garbage.

Conclusion

Changing the oil on your 2020 Husqvarna FC450HQ keeps your motor running cool and healthy. For more maintenance tips, OEM filters, oil, and expert support, visit MotoSport.com or consult a Husqvarna-certified technician for further guidance.

Related Shopping Categories

Shop Motor Oil for a 2020 Husqvarna FC450HQ Dirt Bike.

Shop Oil Filters for a 2020 Husqvarna FC450HQ Dirt Bike.

Shop Oil Drain Pans for a 2020 Husqvarna FC450HQ Dirt Bike.

Shop Tools for a 2020 Husqvarna FC450HQ Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2020 Husqvarna FC450HQ 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.