How to Change the Oil in a 2010 Husqvarna WR250 — MotoSport.com Exclusive Guide

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Changing the oil in your 2010 Husqvarna WR250 is an essential maintenance task that will keep your bike running strong and extend engine life. This guide covers all the tools and steps required, and highlights special notes specifically for the WR250 two-stroke platform.

Tools & Supplies Needed

  • Socket set (most often 13mm or 17mm for drain plug, but confirm your specific size)
  • Allen key set (for side cover removal if required)
  • Drain pan for used oil
  • Funnel for clean oil
  • Shop rags for spills
  • Contact cleaner (optional, for cleanup)
  • New crush washer for drain plug (highly recommended each time)
  • Gear oil: Husqvarna recommends 10W-40 or equivalent 2-stroke gear oil. Always refer to your owner's manual for the most up-to-date specifications.
  • Torque wrench (for precise drain plug installation)
  • Gloves (optional, for cleanliness)

Steps to Change Oil on a 2010 Husqvarna WR250

  • Warm Up the Engine: Start your WR250 and let it run for a few minutes to warm the oil (it will drain out faster and more thoroughly this way).
  • Stabilize the Bike: Place the bike on a stand or securely upright to keep it as vertical as possible.
  • Clean the Area: Use a shop rag to clean around the drain plug to prevent dirt from contaminating your engine when the plug is removed.
  • Remove the Drain Plug: Find the transmission/gearbox oil drain bolt (typically located at the lowest point of the engine case). Place your drain pan directly underneath. Loosen and remove the bolt, allowing all of the old oil to fully drain.
  • Inspect the Drain Plug & Washer: Inspect the drain plug and the crush washer for damage or wear. Replace the washer if it's flattened or cracked. Clean any debris or metal shavings from the magnetic tip of the drain bolt (if equipped).
  • Reinstall Drain Plug: After the oil stops dripping, reinstall the drain plug with a fresh crush washer. Tighten it to the specified torque found in your owner's manual–be careful, as these bolts are easy to over-tighten on aluminum cases.
  • Add New Oil: Locate and remove the fill plug (typically on the right side cover). Using a funnel, add the correct oil type and quantity–the 2010 WR250 typically takes approximately 800ml (0.85qt) of gear/transmission oil, but check your manual for exact volume.
  • Check Oil Level: Some models have a sight glass or an “overflow bolt” on the clutch cover to indicate oil level. If you have an overflow bolt, fill until oil just starts to seep from this bolt, then reinstall it. Do not overfill.
  • Reinstall the Fill Plug: Ensure the fill plug cap is clean and sits securely, then reinstall and hand-tighten.
  • Wipe Down & Inspect: Clean any oil drips or splatter. Start your bike and let it idle briefly, then shut it down and recheck for any leaks around the fill or drain bolts.
  • Dispose of Used Oil Properly: Take the used oil to a recycling center or auto parts store for proper hazardous waste disposal.

Special Call-Outs for the 2010 Husqvarna WR250

  • Two-Stroke Transmission Oil: Unlike four-stroke bikes, your 2010 WR250 uses gear oil for the transmission and clutch — separate from premix or injector oil for the engine. Never add motor oil to the fuel tank or premix reservoir.
  • Oil Level Check: Most Husqvarna WR250s from this era have a simple overflow/check bolt on the side of the clutch cover, rather than a dipstick. Fill slowly and check often to avoid overfilling.
  • Service Interval: For off-road and racing use, it's best to change the gearbox oil at least every 10-15 hours of riding, or after especially muddy or wet conditions.
  • Gasket/O-Rings: Always inspect the gaskets and o-rings (especially on the fill and drain bolts) for wear, and replace as needed to avoid leaks.
  • Bolts and Covers: Be cautious when threading bolts back in; cross-threading can easily damage aluminum cases. Always start bolts by hand before torquing down.
  • Clutch Inspection: It's a good habit to inspect the clutch plates through the fill hole or side cover (if easy access) for excessive wear or oil discoloration. Replace clutch cover gasket if side cover removal is required.

Final Tips

  • Keep a maintenance log with dates and hours between changes.
  • Use quality oil specifically formulated for two-stroke gearboxes; using incorrect oil can cause clutch slippage or premature wear.
  • If you ever notice milky or frothy oil, investigate for possible water intrusion (blown seals, gaskets, etc.).
  • Always double-check that both drain and fill bolts are tight before riding.

If you need specific OEM parts, crush washers, or premium gear oil, MotoSport.com stocks a full line of service products for your 2010 Husqvarna WR250. Keep your machine running strong ride after ride.

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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.