How to Change the Oil in a 2019 Honda CRF125F: A Step-by-Step MotoSport.com Guide
Shop parts for a 2019 Honda CRF125F Dirt Bike.
Routine oil changes are crucial for keeping your 2019 Honda CRF125F running at peak performance and extending engine life. This guide will cover all the tools you need, detailed instructions, and specific tips for the CRF125F to ensure a smooth oil change every time.
Tools and Materials Needed
- 17mm socket (preferably deep well or with extension)
- Socket wrench
- Drain pan for catching old oil
- Rag or shop towels for cleaning up spills
- 1 quart (0.9L/900mL) of 10W-30 or 10W-40 motorcycle-specific oil (such as Honda GN4)
- New drain plug crush washer (recommended)
- Measuring cup or beaker marked for at least 1 liter (optional for accuracy)
- Torque wrench (recommended for precise tightening)
Specific Call-Outs for the 2019 Honda CRF125F
- This model does not have an oil filter–frequent oil changes are especially important to prevent engine wear every 10 hours of riding.
- Oil capacity is 0.9 quarts or about 850-900cc (850 mL).
- Do not screw the dipstick in when checking oil level—just insert it into the threads and then remove to read the level.
- The drain plug torque spec is 18 ft-lb or 216 in-lb. Always use a new crush washer to avoid leaks.
- The skid plate has a notch that gives you direct access to the drain plug for easy service.
Step-by-Step Oil Change Instructions
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Warm Up the Engine
- Start the bike and let it idle for 3-5 minutes until the engine is warm to the touch. Warm oil drains more easily and thoroughly.
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Stabilize and Prepare the Bike
- Place the bike on a stand or keep it upright and level to ensure all the old oil drains out.
- Lay shop towels underneath the bike to protect your work area from spills.
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Locate the Drain Plug
- The drain plug is centered at the bottom of the engine, accessible through a cutout in the skid plate.
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Drain the Old Oil
- Using the 17mm socket and wrench, loosen and remove the drain plug. Allow the oil to fully drain into your pan. Be sure not to lose the crush washer.
- Let the oil drip until fully drained—this can take several minutes.
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Inspect and Replace Drain Plug/Washer
- Inspect the crush washer; always replace it with a new one to ensure a proper seal and prevent leaks.
- Reinstall the drain plug and tighten to 18 ft-lb (216 in-lb) using a torque wrench if available.
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Add New Oil
- Remove the dipstick from the oil fill hole.
- Slowly pour in 0.9 quarts (850-900cc) of 10W-30 or 10W-40 motorcycle oil.
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Check Oil Level
- With the bike upright and level, insert (but do not screw in) the dipstick, then remove and check the oil level. Add oil in small increments if needed to reach just below the “full” mark.
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Start and Re-Check
- Start the engine and let it idle for 3-5 minutes, then shut it off and allow to sit for 2-3 minutes.
- Check the oil level again and top up if necessary.
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Clean Up
- Wipe away any drips, dispose of used oil at a local recycling facility, and make sure the oil fill cap and dipstick are secure.
Final Tips
- Frequency: Change the oil every 10 hours of riding or at least every few months if ridden less often, since the CRF125F lacks an oil filter.
- No filter to replace: Quick, inexpensive, but don’t skip regular service.
- If you lose track of when the oil was last changed, it’s better to change too often than too little.
- Always dispose of waste oil properly and keep your work area clean.
With the right tools and this guide, changing the oil on your 2019 Honda CRF125F is straightforward and ensures your engine stays reliable. Stay ahead of the maintenance curve and enjoy your ride, courtesy of MotoSport.com.
Related Shopping Categories
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Shop Oil Fillers and Drain Plugs for a 2019 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.