How to Change the Oil in a 2010 Husqvarna CR125

Shop parts for a 2010 Husqvarna CR125 Dirt Bike.

Regular oil changes are crucial for ensuring your 2010 Husqvarna CR125 remains in peak running condition. This detailed guide, proprietary to MotoSport.com, walks you step-by-step through the process for your two-stroke dirt bike. While the job is straightforward, attention to detail and use of proper supplies will protect your engine for years of riding.

Tools & Supplies Needed

  • Metric socket wrench set
  • 8mm socket or T-wrench
  • Drain pan (with capacity for at least 1 liter)
  • Fresh transmission/gearbox oil (Motorex 10W30 or equivalent)
  • Funnel
  • Clean rag or shop towels
  • New cap seal/gasket (if needed)
  • Triangle stand or center stand
  • Rubber gloves (optional, but recommended)

Model-Specific Call-Outs

  • Recommended Oil Volume:– The 2010 Husqvarna CR125 requires 800ml of gearbox oil. Overfilling can affect shifting performance and is not recommended.
  • Oil Drain Location:– Unlike some bikes, the CR125 requires removal of the engine guard for drain plug access.
  • Filler Cap – Level Bolt:– Filling is done at the top cover cap; final volume can be double-checked using the level/bleeder bolt near the clutch cover.

Step-by-Step Oil Change Procedure

  • Warm Up the Engine
    • Start the engine and let it idle for 3–5 minutes. This allows the oil to warm, thin out, and collect contaminants for complete drainage.
  • Stabilize the Bike
    • Set the bike on a triangle stand or center stand. Ensure it is upright and secure to avoid accidents.
  • Remove the Engine Guard
    • Using your metric socket wrench, loosen and remove the lower and side screws securing the engine guard. Carefully set the guard aside and note the position of any spacers for correct reassembly later.
  • Place the Drain Pan
    • Position a suitable drain pan directly beneath the undersump drain plug at the bottom of the engine.
  • Remove the Drain Plug
    • With gloves on, use the correct socket (typically 8mm) to remove the drain plug.
      • Be careful: the oil and surroundings may be hot.
      • Allow the oil to drain fully—this can take several minutes.
  • Inspect and Clean
    • Wipe the drain plug and inspect the sealing washer or gasket. Replace the washer if it is crushed, cracked, or excessively worn, as this will prevent leaks.
  • Reinstall Drain Plug and Engine Guard
    • Once oil has fully drained, reinstall the drain plug and torque to the manufacturer's specification. Make sure the seal is properly seated.
    • Reattach the engine guard, ensuring any spacers are reinstalled in their original position.
  • Refill the Gearbox Oil
    • Locate and remove the oil fill cap on top of the engine or clutch cover.
    • Using a funnel, pour in 800ml of fresh, recommended 10W30 transmission oil, or as specified for your local conditions.
    • For best accuracy, pour slowly and check the level using the fill-level bolt (near the clutch cover). Remove the bolt; when oil begins to seep out, you're at the correct fill.
    • Replace both the fill cap and level bolt securely.
  • Clean Up
    • Wipe away any spilled oil, and responsibly dispose of the used oil and filter per your local environmental regulations.
  • Final Check
    • Start the engine and let it idle for a minute; look for any signs of oil leaks at the drain plug or fill cap. Double-check tightness if needed.
    • Confirm smooth shifting and normal clutch operation during your next ride.

Extra Tips for 2010 Husqvarna CR125 Owners

  • Always double-check your manual for the latest recommended oil type and volume. For the 2010 CR125, use 800ml Motorex 10W30 or equivalent; do not overfill.
  • Replace the sealing washer on the drain plug at each oil change to prevent leaks.
  • Warm oil drains more completely and carries more contaminants with it.
  • Check for any aluminum debris or metal flakes in the old oil or on the drain plug magnet, as these can indicate wear.
  • Never mix different brands or types of transmission oil.

Following this guide ensures your 2010 Husqvarna CR125 gearbox will perform reliably, whether you're on the race track or the trails. For all genuine parts, oil, and maintenance supplies, shop with confidence at 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.