How to Change the Oil in a 2001 Husqvarna CR125

Shop parts for a 2001 Husqvarna CR125 Dirt Bike.

Keeping your 2001 Husqvarna CR125's transmission oil fresh is crucial for performance and longevity. This detailed guide from MotoSport.com walks you through the process with model-specific tips, the required tools, and best practices for success every time.

Tools and Supplies Needed

  • Socket wrench set (with an 8mm or 13mm socket–verify size for your drain bolt)
  • Oil drain pan
  • Funnel
  • Clean shop rags
  • Measuring cup (for accurate fill)
  • Replacement transmission oil (Recommended: high-quality 80W transmission oil or your favorite gear oil rated for wet clutches)
  • New crush washer (recommended, if needed for drain bolt)
  • Rubber gloves (optional, for cleanliness)
  • Service manual (for torque specs and reference)

Steps to Change the Oil

  • 1. Warm Up the Bike
    • Start the CR125 and let it idle for a few minutes to warm the transmission oil. Warm oil drains faster and removes more contaminants.
  • 2. Prepare the Bike
    • Place the bike on a stable stand–use a center stand or paddock stand so the bike sits level.
    • Lay down a rag or cardboard under the bike to catch any spills and position your oil drain pan beneath the crankcase.
  • 3. Remove the Filler Cap
    • The oil fill cap is located on top of the clutch cover. Removing it before draining helps oil flow out smoothly and speeds the process.
      Tip: This is also a good time to check for any dirt or debris near the filler hole–wipe it clean with a rag.
  • 4. Remove the Drain Plug
    • Locate the oil drain plug at the base of the engine (usually at the lowest point of the transmission case).
    • Use your socket wrench to carefully loosen and remove the plug. Be ready—oil will flow immediately.
    • Let all the oil drain into your pan. You can tip the bike slightly side to side (in small amounts) to help evacuate old oil.
    • Call-out: On the 2001 Husqvarna CR125, inspect the drain plug for a magnet–this feature collects metal particles. Wipe it clean and replace the crush washer if it's damaged or deformed.
  • 5. Inspect the Old Oil
    • Look for signs of excessive metal, cloudiness, or milky color (which could indicate water contamination).
    • Tip: If you notice excessive debris, consider a more frequent oil change schedule or inspect the clutch for wear.
  • 6. Reinstall the Drain Plug
    • Once oil is fully drained, reinstall the (cleaned) drain plug and torque to the factory specification from your manual.
    • If you replaced the crush washer, ensure it's seated properly to avoid leaks.
  • 7. Add New Oil
    • Place a funnel in the fill hole. Refer to the owner's manual for the correct capacity–the 2001 Husqvarna CR125 typically takes about 650ml (about 22oz) of oil–but always verify with your own manual or markings.
      Tip: Measuring the oil before pouring avoids overfilling.
    • Pour oil slowly to avoid spills, pausing to check the level if your bike has a sight glass or dipstick.
  • 8. Replace the Filler Cap
    • Wipe up any drips and install the filler cap securely.
  • 9. Run the Engine and Check for Leaks
    • Start the CR125 and let it idle for a few minutes, cycling through the gears briefly if possible.
    • Check the drain plug and filler cap area for leaks.
    • Re-check the oil level. Some settling may occur after the first run. Top off as needed, but do not overfill–this impacts clutch performance and could cause leaks.

Model-Specific Call-Outs for the 2001 Husqvarna CR125

  • Always use a transmission oil suitable for wet clutches–avoid friction-modified automotive oils.
  • Transmission oil should be changed more frequently for hard use (racing, mud, or sand) because debris and water ingress happen faster.
  • 650ml capacity is typical for this year and model, but confirm with your owner's manual or transmission cover markings. Never overfill.
  • Check the condition of your drain plug magnet if present–residue is common, but larger metal shards could indicate a problem.
  • The 2001 CR125 transmission and engine are separate lubricated systems, so changing the transmission oil is all that's required.

Final Pro Tips from MotoSport.com

  • Write down the date and runtime hours at each oil change–it helps with maintaining a routine and troubleshooting future issues.
  • Dispose of used oil responsibly at a dedicated recycling center.
  • Check your clutch lever feel and shifting action after the new oil circulates–a notchy feel could indicate a need for another flush or clutch service.

Performing regular oil changes on your 2001 Husqvarna CR125 is one of the simplest ways to protect your transmission and keep your rides fun and hassle-free.

Related Shopping Categories

Shop Motor Oil for a 2001 Husqvarna CR125 Dirt Bike.

Shop Oil Filters for a 2001 Husqvarna CR125 Dirt Bike.

Shop Oil Drain Pans for a 2001 Husqvarna CR125 Dirt Bike.

Shop Tools for a 2001 Husqvarna CR125 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2001 Husqvarna CR125 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.