How to Change the Oil in a 2021 Honda CRF110F
Shop parts for a 2021 Honda CRF110F Dirt Bike.
Keeping your 2021 Honda CRF110F in top condition means regular maintenance, and changing the oil is one of the most critical tasks. This step-by-step guide, exclusive to MotoSport.com, walks you through the entire process, highlights any model-specific needs, and lists the tools required so you can get back on the trail with confidence.
Tools & Materials Needed
- 10mm socket or wrench (for oil drain bolt)
- Torque wrench (recommended for proper reinstallation)
- Drain pan
- Funnel (optional, but helpful for refilling)
- Rag or shop towels
- Fresh engine oil (Honda recommends 10W-40, approximately 1.1 US quarts/1.0 liters)
- Replacement drain bolt sealing washer
- Gloves (optional, for cleanliness)
Step-by-Step Oil Change Instructions
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Warm Up the Engine
Start your CRF110F and let it idle for 3–5 minutes. This ensures the oil flows and drains more completely. Turn off the engine and wait 2–3 minutes for the oil to settle. -
Stabilize the Bike
Park on a firm, level surface and hold the motorcycle upright. This ensures accurate oil drainage and level readings. -
Remove the Dipstick
Locate the oil fill cap/dipstick at the rear of the right crankcase cover. Unscrew and set aside for later. -
Drain the Oil
Position your drain pan under the crankcase. Using a 10mm wrench, remove the oil drain bolt (it's underneath on the right, nearest the footpeg). Do not mistakenly remove the cam chain tensioner push rod bolt—it's a common error—if you do, see a dealer for the correct procedure.- Allow the oil to drain fully. Tilt the bike gently from side to side to ensure all oil evacuates.
- Once flow slows to drips, pour the used oil into a suitable, sealable container for responsible disposal.
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Replace the Sealing Washer
Remove the old washer from the drain bolt. Install a new sealing washer—this prevents leaks and is a critical step for the CRF110F. -
Reinstall and Torque the Drain Bolt
Refit the drain bolt and hand-tighten first, then use a torque wrench to finish to 18 lbf·ft (24 N·m, 2.4 kgf·m) as specified by Honda. Over-tightening can strip the threads; under-tightening can cause leaks. -
Refill with Fresh Oil
Use a funnel to avoid spills and pour in 1.1 US quarts (1.0 liter) of 10W-40 motorcycle oil. This matches the factory specification—do not overfill.- The CRF110F has a small dipstick area; be patient and pour slowly. Consider oils designed for motorcycles for better clutch performance.
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Check the Oil Level
Insert the dipstick/fill cap without screwing it in, remove, and confirm oil is between the upper and lower marks on the dipstick.- Add oil if needed, but do not overfill. Overfilling can cause power loss and engine fouling.
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Start and Recheck
Reinstall the dipstick. Start the engine and idle for 3–5 minutes. Turn off and let sit for 2–3 minutes. Hold the bike upright and recheck oil level. Add as needed. -
Inspect for Leaks and Clean Up
Inspect around the drain bolt and oil filter area for any signs of leaks.- Dispose of old oil responsibly—most auto parts stores recycle motor oil.
Model-Specific Tips and Important Callouts
- 2021 CRF110F has no external oil filter; it uses an internal oil screen that should be checked occasionally for debris, especially on higher hour bikes. The oil screen isn't replaced routinely but can be accessed behind the side case if needed, which is a more advanced step best left for annual or major maintenance.
- Right Side Drain Bolt: Ensure you correctly identify the drain bolt; the cam chain tensioner push rod bolt is commonly mistaken for it. Removing the wrong bolt can introduce additional maintenance needs.
- Oil Quantity: The 2021 CRF110F takes 1.1 US quarts (1.0 liter) of oil. Overfilling is a common mistake—add gradually and keep checking.
- Regular Checks: Check your oil level often, especially after the first few rides post-change. Leaks or consumption can occur more frequently on dirt bikes exposed to hard use.
Final Thoughts
Changing the oil in your 2021 Honda CRF110F is straightforward with the right tools and process. Always consult your owner's manual for model-specific torque specs and oil type. By performing regular oil changes, you'll prolong your bike's life and enjoy more worry-free riding. For all your maintenance parts, oils, and Honda CRF110F accessories, trust MotoSport.com.
References
Procedure and specifications based on Honda documentation and verified user guides for 2021 CRF110F.
Related Shopping Categories
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Shop Oil Fillers and Drain Plugs for a 2021 Honda CRF110F 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.