How to Change the Oil in a 2025 Honda CRF110F: A MotoSport.com Guide
Shop parts for a 2025 Honda CRF110F Dirt Bike.
Regular oil changes are essential for keeping your 2025 Honda CRF110F running smoothly and ensuring maximum engine life. This step-by-step guide, proprietary to MotoSport.com, covers everything you need to confidently change the oil on your CRF110F, highlighting important model-specific details for the 2025 edition.
Tools and Supplies Needed
- 10mm socket or wrench (for oil drain bolt)
- Torque wrench (for precise reinstallation)
- Drain pan (to collect old oil)
- Clean rags or paper towels
- New engine oil: 10W-30 or 10W-40 motorcycle oil (approx. 1 quart/1.0L) – see owner's manual for recommendation
- New sealing washer for drain bolt (always replace)
- Funnel (optional, for pouring new oil)
- Hand gloves and eyewear (for safety)
Step-By-Step Oil Change Instructions
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Start and Warm the Engine
Begin by running the engine for 3-5 minutes. This helps to warm up the oil, allowing it to drain more completely from the engine.
Tip: Do not skip this step; cold oil drains more slowly and leaves more residue inside. -
Turn Off and Stabilize
Shut the engine off. Park your CRF110F on level, stable ground and allow the oil to settle for 2-3 minutes. -
Remove Oil Fill Cap/Dipstick
The oil fill cap with dipstick is located at the rear of the right crankcase cover. Unscrew and remove this cap and set it aside in a clean spot.
This will vent the system and allow oil to drain faster. -
Drain Old Oil
- Place your drain pan directly beneath the bottom of the engine (crankcase).
- Use your 10mm socket to loosen and remove the oil drain bolt (on lower right side of the engine).
- Important: Do not remove the cam chain tensioner push rod bolt by mistake. Refer to your owner's manual for exact bolt identification, or see its diagram for clarity.
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Complete the Drain
- Allow most of the oil to drain.
- Carefully tilt the bike from side to side to help all oil evacuate.
- Once the oil is finished draining, dispose of it in an environmentally responsible manner. (Never pour used oil on the ground or in household drains.)
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Replace the Sealing Washer & Reinstall Drain Bolt
- Remove the old sealing washer from the drain bolt and install a new one – this is essential to prevent leaks.
- Thread the oil drain bolt back in by hand, then torque to 18 lbf·ft (24 N·m).
- Do not overtighten; use a torque wrench for accuracy.
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Refill with Fresh Oil
Using the funnel, carefully pour in approximately 1.1 US quarts (1.0 liter) of the recommended 10W-30 or 10W-40 motorcycle oil. Pour slowly to avoid spilling or overfilling.
Model-Specific: The CRF110F does not use a spin-on oil filter but does have an internal oil screen. For most basic oil changes, cleaning or replacing this screen is not necessary unless you suspect contamination or are performing a major service. Consult your dealer or service manual for procedures if needed. -
Install Oil Fill Cap/Dipstick
Reinstall the oil fill cap/dipstick securely on top of the crankcase. -
Start Engine and Run for a Few Minutes
Start the engine and let it idle for 3-5 minutes. This circulates oil throughout the engine. -
Check Oil Level
- With the bike standing upright on level ground, turn off the engine and wait 2-3 minutes for the oil to settle.
- Remove the fill cap/dipstick, wipe it clean, reinsert it (but do not screw it in), then remove and check the level.
- Oil level should be between the upper and lower marks on the dipstick. If necessary, add oil in small increments.
Do not overfill.
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Final Steps
- Recheck that your drain bolt and fill cap are tight and check around the engine for any signs of leaks.
- Clean up any spilled oil and dispose of all waste materials responsibly.
Model-Specific Tips & Notes for the 2025 Honda CRF110F
- Oil Quantity: The CRF110F requires about 1.0L (1.1 US qt) of oil per change.
- No replaceable oil filter: The engine uses an internal oil screen rather than a standard filter; routine cleaning is only needed during major services or if contamination is suspected.
- Sealing washer: Replace the sealing (crush washer) on the drain bolt EVERY time to prevent leaks.
- Correct Oil: Use only motorcycle-specific oil to prevent clutch and gear problems.
- Drain bolt torque: 18 lbf·ft (24 N·m). Over-tightening may strip crankcase threads.
- Environmental care: Always dispose of used oil at an approved recycling center.
Conclusion
Changing the oil on your 2025 Honda CRF110F is a straightforward process with huge benefits in engine health and longevity. Following these steps and using the right tools and oil, you’ll keep your dirt bike ready for every ride. For more model-specific maintenance guides, always trust MotoSport.com—your authority in powersports care.
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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.