How to Change the Oil in a 2024 GAS GAS MC 125: Comprehensive Guide
Shop parts for a 2024 GAS GAS MC 125 Dirt Bike.
Changing the oil in your 2024 GAS GAS MC 125 is an essential task for keeping your dirt bike running at peak performance. With regular oil changes, you'll extend the life of your engine and maintain optimal ride quality. This guide, proprietary to MotoSport.com, takes you step-by-step through the full oil change process, highlighting model-specific tips and the exact tools you need for the job.
Tools & Supplies Needed
- Oil drain pan
- 8 mm T-wrench (Allen/hex key)
- 13 mm ratchet or wrench
- Replacement oil (as recommended in your owner's manual)
- Clean rags or shop towels
- Needle-nose pliers (optional, for stubborn parts)
- New oil filter (if applicable, check the manual for oil filter maintenance)
- Replacement crush washer (recommended)
- Contact cleaner (for cleaning drain plug and surfaces)
- Torque wrench
- Funnel (ideally a threaded or spill-proof type for easy filling)
Preparation and Safety
- Start with a warm engine for easier oil drainage. Run the bike for several minutes but avoid burning yourself on hot components.
- Secure the bike on a stand that leaves space under the engine. Avoid solid stands that could block access to drain bolts. Use a stand that allows the bike to safely lean if needed for better oil flow. This is essential for GAS GAS models due to drain bolt location and easier flow when leaned slightly .
Step-by-Step Oil Change Process
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Remove Skid Plate (If Installed):
- If your 2024 GAS GAS MC 125 has a skid plate, remove it to access the drain bolt easily.
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Prepare to Drain Oil:
- Place the oil drain pan under the engine. Make sure the pan is big enough for the expected amount of oil.
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Remove the Oil Drain Plug:
- Use a 13 mm ratchet or wrench to loosen and remove the drain plug.
- Allow oil to drain completely (expect a steady stream, then slow drips). If the flow slows before stopping, tilt the bike gently to the side away from the oil pan for a more complete drain .
- Clean the drain plug with contact cleaner, especially around the magnet if present. Inspect for metal shavings (a few fine shavings are normal, but chunks could indicate internal damage) .
- Replace the crush washer with a new one if the old one is deformed or worn. This helps prevent leaks .
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Remove the Oil Filter (If Applicable):
- Locate the oil filter cover, typically secured with two 8 mm bolts on the side of the engine.
- Use your 8 mm T-wrench to remove these bolts .
- With the cover off, pull out the oil filter. If it's stuck, a pair of needle-nose pliers may help gently extract it .
- Check the filter for debris. For the 2024 GAS GAS MC 125, KTM, and Husqvarna models, inspect the O-rings on the cap and oil filter. Replace if damaged .
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Inspect and Clean:
- Check all sealing surfaces for dirt and wipe clean with a rag.
- Clean (spray off) the oil screen and inspect for debris or large metal shavings .
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Reinstall Drain Plug:
- Apply a drop of oil or grease to the new crush washer and threads.
- Hand-tighten the clean drain plug, then torque to manufacturer spec (usually around 15 Nm or 11 ft-lb–verify the number in your owner's manual) .
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Install New Oil Filter:
- Lubricate the O-rings on the oil filter and cover with a bit of fresh oil.
- Insert the new filter, making sure it sits in its groove properly. Be careful to avoid misaligning the screen—this can let debris slip past .
- Install the cover and torque the bolts evenly.
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Refill With Oil:
- Using your funnel, pour in the recommended quantity and type of oil for the 2024 GAS GAS MC 125 (see owner's manual; typically specific lightweight two-stroke transmission oil such as Maxima MTL) .
- Do not overfill. Pour, then wait a moment for it to settle. Inspect the sight glass or dipstick as applicable.
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Check for Leaks and Proper Oil Level:
- Wipe down any oil residue.
- Start the engine and let it idle for 30–60 seconds, then shut it off and let oil settle.
- Re-check oil level and top off if necessary.
- Inspect around the drain plug and oil filter cover for leaks.
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Dispose of Old Oil Appropriately:
- Bring used oil to a recycling center or auto parts store. Never dump used oil in the trash or down a drain.
2024 GAS GAS MC 125 Model-Specific Tips and Call-Outs
- This bike shares much of its architecture with KTM and Husqvarna sister models; oil change procedures are nearly identical across these brands for similar years .
- The shape and clearance of the drain plug are such that a traditional solid-lift stand may obstruct bolt access—use a stand that supports under the frame with an open bottom, or tilt the bike for better drainage .
- If you encounter significant difficulty accessing the drain bolt due to brake pedal or skid plate location, temporarily reposition the brake pedal or remove the plate. Simple hand tools and careful leverage are usually sufficient .
- When reinstalling the oil filter and screens, make sure both O-rings are lubricated and seated correctly. Skipping this step may cause leaks or debris bypass .
- Always confirm oil type and amounts in your owner's manual, as using incorrect oil (2-stroke vs. 4-stroke, incompatible viscosity) can cause transmission or clutch wear.
Final Advice
- Record the oil change date and hours on the bike to maintain a proper service routine.
- Inspect your drain pan for excessive debris—while a little is normal, chunks or abnormal particles may indicate the need for further engine inspection.
- Consistent oil changes are key for performance and longevity. Consider keeping a supply of oil, filters, and crush washers in your garage for quick maintenance.
Maintaining your 2024 GAS GAS MC 125 with timely oil changes ensures reliability and maximizes your enjoyment on every ride. For all your dirt bike parts and supplies, trust MotoSport.com—your partner in performance and service know-how.
Related Shopping Categories
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Shop Tools for a 2024 GAS GAS MC 125 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2024 GAS GAS MC 125 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.