How To Change the Oil in a 2017 Honda CRF125F: Complete MotoSport.com Guide
Shop parts for a 2017 Honda CRF125F Dirt Bike.
Changing the oil in your 2017 Honda CRF125F is a key part of regular dirt bike maintenance. Performing this task yourself saves money and helps extend the life of your bike’s engine. This guide walks you through each step, tools needed, and special considerations specific to this make, model, and year.
Tools and Materials Needed
- 17mm socket with ratchet (preferably deep well or with an extension)
- Oil drain pan
- Narrow funnel
- New engine oil (Honda GN4 10W-30 or 10W-40 motorcycle oil–make sure it is motorcycle-specific)
- Replacement crush washer for the drain plug
- Clean rag
- Beaker or measuring cup (to measure 850cc or 0.9 quarts)
- Torque wrench (optional but recommended for correct drain plug tightening)
Step-by-Step Instructions
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Warm Up the Engine
- Start your CRF125F and let it idle for about 3–5 minutes. Warming up the oil allows it to drain more quickly and removes more contaminants from the engine.
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Position the Bike Securely
- Place the bike on a firm and level surface using its side stand or, ideally, a bike stand to keep it upright and stable.
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Locate and Remove the Drain Plug
- Locate the drain plug (17mm) at the bottom center of the engine, under the skid plate. The skid plate on the CRF125F has a notch or hole designed for oil changes, making the plug easily accessible without removing the plate.
- Place the drain pan directly under the drain plug.
- Use the 17mm socket and ratchet (with or without an extension) to loosen and remove the drain plug. Allow the oil to drain completely—this typically takes about five minutes.
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Inspect and Replace the Crush Washer
- Remove and inspect the crush washer on the drain plug. Replace it with a new washer to ensure a proper seal and prevent oil leaks.
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Reinstall the Drain Plug
- Once the oil has drained, clean the area around the drain hole with a rag.
- Reinstall the drain plug and new crush washer.
- Tighten it securely. The recommended torque for the drain plug is 18 foot-pounds (216 inch-pounds). Avoid overtightening to prevent damage to the threads.
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Add New Engine Oil
- Remove the oil fill cap on the right side of the engine.
- Using a funnel, pour in 0.9 quarts (850cc) of fresh motorcycle oil. It’s important not to overfill.
- Reinstall the oil fill cap loosely for a moment while you check the level.
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Check Oil Level
- With the CRF125F, check the oil level as follows: Stand the bike upright, remove the dipstick, clean it, reinsert it (do not screw it in), then remove and check the level. Oil should be at or near the full mark.
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Start and Recheck
- Start the engine and let it idle for 3–5 minutes so oil circulates through the system. Shut it off and wait two minutes for the oil to settle.
- Check the oil level again with the dipstick as described above. Top off as necessary (do not exceed the recommended amount).
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Dispose of Used Oil Properly
- Pour the used oil into a sealed container and take it to a recycling center or auto parts store that accepts used oil.
Special CRF125F Tips and Call-Outs
- No Oil Filter: The 2017 Honda CRF125F does not use an oil filter, simplifying the process. Change oil frequently (every 10–15 hours of riding or as specified in your manual) to keep the engine clean.
- Check Oil While Upright: Always check oil level with the bike balanced upright, not resting on the stand, and with the dipstick resting on the hole but not screwed in.
- Correct Oil Volume: Only add 0.9 quarts (850cc). Overfilling can harm performance and cause leaks.
- Torque Spec: Tighten the drain bolt to 18 ft-lbs. Over-torquing risks stripping the threads; under-torquing can cause leaks.
- Routine Check: Monitor oil level before each ride, as trail and track riding can consume more oil.
Conclusion
Changing the oil on your Honda CRF125F is simple and quick once you gather your tools and follow these steps. Regular oil changes will keep your bike running smoothly and help you get the most from every ride. Always use high-quality, motorcycle-specific oil, and double-check your manual for any updates or changes.
This how-to is proprietary to MotoSport.com and tailored specifically for the 2017 Honda CRF125F. Check back for more maintenance tips and guides.
Related Shopping Categories
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Shop Oil Fillers and Drain Plugs for a 2017 Honda CRF125F 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.