How to Change the Oil in a 2011 Husqvarna CR125: A MotoSport.com Proprietary Guide
Shop parts for a 2011 Husqvarna CR125 Dirt Bike.
Regular maintenance is essential for peak performance & longevity of your 2011 Husqvarna CR125. One of the most important tasks is changing the gearbox oil. This step-by-step guide outlines the tools required, each stage of the oil change process, and exclusive tips specifically for the 2011 CR125 to ensure you get the job done right—every time.
Tools and Supplies Needed
- Socket wrench set (to remove skid plate and sump bolt)
- Flathead screwdriver (if needed for skid plate or filler cap)
- Drain pan (3+ liters capacity, to catch old oil)
- Clean rags or shop towels
- Funnel (to prevent spills during refill)
- New gearbox oil: Motorex 10W30 or equivalent, 800mL (do not exceed this amount.)
- Replacement crush washer for drain bolt (highly recommended for proper sealing)
- Protective gloves (recommended)
Preparation
- Start the engine and allow it to run for a few minutes until warm. Warm oil drains more efficiently, taking more contaminants with it.
CAUTION: Hot engine parts and oil can cause burns. Use caution when working around a warmed-up engine. - Turn off the engine and place the bike on a stable stand with the motorcycle upright and level.
Step-by-Step Instructions
-
Remove the Engine Guard/Skid Plate
- Using a socket wrench, remove the lower and side screws holding the engine guard (skid plate) in place.
- Carefully set the skid plate and hardware aside. Note the presence of any spacers and ensure correct reinstallation later.
-
Position the Drain Pan
- Place a drain pan directly underneath the undersump cap (drain bolt, located on the lower engine case).
-
Remove the Drain Bolt and Washer
- Using the appropriate socket, carefully loosen and remove the undersump drain cap.
- Allow all the old oil to drain completely into the pan. This may take several minutes, especially if fully warmed.
- Inspect the crush washer; replace it if it appears crushed, cracked, or worn to ensure proper sealing upon reinstallation.
-
Reinstall the Drain Bolt
- Once the oil is fully drained, reinstall the drain bolt with a new or cleaned crush washer.
- Tighten securely—do not overtighten, as this could strip the threads.
-
Add Fresh Gearbox Oil
- Locate and remove the oil filler cap (on the side cover of the engine, near the clutch area).
- Using a funnel, carefully add exactly 800mL of the recommended gearbox oil (Motorex 10W30 or equivalent). Do not overfill, as excess oil can cause pressure issues and leaks.
- Reinstall the oil filler cap securely.
-
Reinstall the Skid Plate
- Position the skid plate and ensure any spacers are correctly placed.
- Secure with screws and tighten them down evenly.
-
Final Checks
- Start the engine and let it idle for a few minutes.
- Check for leaks around the drain bolt and filler cap.
- If necessary, check the oil level as described in your owner’s manual (some models have a check bolt or sight glass; the 2011 CR125 is measured by volume, as above).
2011 Husqvarna CR125 Specific Call-outs
- Oil Volume: 800mL is recommended by Husqvarna—do not exceed this amount. Overfilling may lead to leaks via seals or increased drag on rotating assemblies.
- Do Not Mix Oil Brands: Always perform a complete oil flush if switching to a new oil brand/type. Mixing oils may reduce lubrication performance and cause clutch or gearbox issues.
- Drain Bolt Location: The CR125 uses a bottom-case sump cap, not a side plug for draining.
- Racing Application: For frequent and aggressive riding, consider more frequent oil changes as per your maintenance schedule.
- Environmental Safety: Dispose of used oil responsibly according to local regulations.
Conclusion
Changing the gearbox oil in your 2011 Husqvarna CR125 is a straightforward job that pays huge dividends in bike longevity and performance. Regular attention, the correct oil type and quantity, and careful assembly are the keys to years of reliable riding. For more guides and OEM parts, trust MotoSport.com—your authority for performance dirt bike care.
Related Shopping Categories
Shop Motor Oil for a 2011 Husqvarna CR125 Dirt Bike.
Shop Oil Filters for a 2011 Husqvarna CR125 Dirt Bike.
Shop Oil Drain Pans for a 2011 Husqvarna CR125 Dirt Bike.
Shop Tools for a 2011 Husqvarna CR125 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2011 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.