How to Change the Oil in a 2007 Husqvarna WR250

Shop parts for a 2007 Husqvarna WR250 Dirt Bike.

Maintaining your 2007 Husqvarna WR250 by regularly changing the oil is vital for engine longevity and optimal performance. This comprehensive how-to guide, proprietary to MotoSport.com, covers everything you need to know about changing the oil in this specific dirt bike. Follow each step closely to ensure a clean, hassle-free oil change.

Tools and Supplies Needed

  • Socket wrench set (10mm and 8mm sockets recommended for skid plate and drain plug)
  • Allen key set or Allen sockets (for oil filter cover bolts, typically 5mm or 6mm, double-check sizing for your WR250)
  • New engine oil (Consult owner's manual. Typically, high-quality 2-stroke oil is used, but check for Husqvarna-specific recommendations.)
  • Replacement oil filter (if equipped; confirm if 2007 WR250 has a replaceable oil filter. Many 2-stroke models use a screen that should be cleaned, not always replaced.)
  • Drain pan
  • Oil funnel
  • New crush washer for the drain bolt (recommended)
  • Shop towels or rags
  • Gloves (optional, for cleanliness)
  • Bike stand (to keep your WR250 level and vertical)

Before You Start

  • Work in a well-ventilated area and allow the engine to cool, but starting with mildly warm oil helps it drain more easily.
  • Make sure the bike is upright and stable using a dirt bike stand or lift.
  • Double check that the recommended oil type and quantity for your 2007 WR250 match the specs in your owner's manual.
  • Remove the skid plate to access the drain bolt if your bike is fitted with one.

Step-by-Step Oil Change Instructions

  1. Warm Up the Engine
    Start your WR250 and let it idle for a few minutes. Warm oil flows and drains faster, taking contaminants with it.
  2. Secure the WR250
    Turn off the engine and use your stand to keep the bike vertical. Place your drain pan under the engine, where the drain bolt is located.
  3. Remove the Skid Plate (if equipped)
    Use your 10mm socket or Allen key to remove the bolts holding the skid plate to access the drain bolt.
  4. Clean Around the Drain Plug
    Before removing the drain bolt, wipe away dirt and debris to prevent contamination from entering the engine.
  5. Remove the Drain Bolt
    Using the correct wrench (typically 8mm or 10mm), carefully unscrew the drain bolt. Allow the oil to drain completely into your pan. Be mindful of the crush washer.
  6. Inspect and Replace the Crush Washer
    Always inspect the crush washer for wear; replace it if damaged for a proper seal.
  7. Clean the Oil Screen
    The 2007 Husqvarna WR250 is a 2-stroke and usually equipped with an oil screen rather than a replaceable filter. Remove the screen, clean it thoroughly with solvent or fresh oil, then reinsert.
  8. Reinstall the Drain Plug
    Hand-thread the drain plug to avoid cross-threading, then tighten it firmly, but do not overtighten.
  9. Refill with Fresh Oil
    Refer to your manual for the recommended oil amount (typically about 750 ml to 1L on most 2-strokes, but confirm for your WR250). Use a funnel to avoid spills. Pour in the recommended 2-stroke transmission oil, not premix oil.
  10. Check the Oil Level
    With the bike upright, allow the oil to settle, then use the sight glass or dipstick (if equipped) to confirm correct oil level. Add oil slowly if needed.
  11. Replace the Skid Plate
    Once the oil level is correct and there are no leaks, reinstall the skid plate.
  12. Start the Engine, Check for Leaks
    Start the engine briefly to circulate the oil, turn it off, and verify there are no leaks around the drain plug.

2007 Husqvarna WR250 Model-Specific Call-Outs

  • 2-stroke transmission oil is used in the gearbox, NOT standard 4-stroke motor oil. Only fill the oil in the designated gearbox fill port.
  • The WR250 typically does not have an oil filter but an oil screen, which should be cleaned rather than replaced; neglecting this step can cause contaminants to recirculate.
  • If your WR250 is fitted with aftermarket sump guards or bash plates, removing them may require extra tools.
  • Always use the correct oil grade for temperature and riding conditions – consult your Husqvarna service manual for viscosity recommendations.
  • Carefully inspect gaskets and sealing washers to avoid pesky leaks or transmission issues.
  • Disposal: Place old oil in a sealed jug and take it to an oil recycling center. Never pour oil down the drain.

Helpful Pro Tips

  • Label your drain pan with “transmission oil” so you don’t mix it with engine or premix oil during disposal.
  • Avoid overtightening the drain bolt; damaged threads can be expensive to repair.
  • Keep track of maintenance intervals in a riding log or app so you know when your WR250 is due for the next oil change.
  • If you notice metallic particles or a milky color in the drained oil, consult a mechanic to check for possible internal issues.

By following these steps, you’ll keep your 2007 Husqvarna WR250 running smoothly and reliably for many rides to come. For more OEM-recommended parts, oil, and maintenance solutions, visit MotoSport.com.

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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.