How to Change the Oil in a 2007 Honda CRF100F: A Complete Guide

Shop parts for a 2007 Honda CRF100F Dirt Bike.

Routine oil changes are essential to keep your 2007 Honda CRF100F running smoothly and to ensure long engine life. This step-by-step guide is proprietary to MotoSport.com and details the tools needed, step sequence, and important model-specific tips for this renowned Honda dirt bike.

Tools and Materials Needed

  • 1 quart of 10W-40 motorcycle oil (Honda recommends a high-quality 4-stroke oil formulated for wet clutches; do not use oil additives or non-specified oil types)
  • 14mm socket and ratchet
  • Oil drain pan
  • Clean funnel
  • Rags or paper towels for cleanup
  • Gloves (optional, but recommended)
  • Original oil container or approved jug for disposal

Steps to Change the Oil on a 2007 Honda CRF100F

  • Warm up the Engine
    • Start the bike and let it idle for about 3–5 minutes to allow the oil to warm up and flow easier for draining.
  • Prepare the Bike
    • Turn the engine off.
    • Place the bike on a level, firm surface using a stand to keep it steady.
    • Ensure the area around the oil filler cap is clean to prevent dirt from getting into the engine.
  • Remove the Oil Filler Cap
    • Unscrew the oil filler cap/dipstick to allow air in the system when draining oil. The cap is typically on the right side of the engine and has the dipstick attached to it.
  • Drain the Old Oil
    • Position your oil drain pan under the engine, beneath the oil drain bolt (bottom of the crankcase).
    • Using your 14mm socket and ratchet, carefully unscrew and remove the oil drain bolt. Be cautious: the oil may be hot.
    • Allow the majority of the oil to drain out. Gently tip the bike side to side to ensure all oil is removed.
    • Wipe the drain bolt clean and check the washer; replace if damaged.
  • Reinstall the Drain Bolt
    • Once draining is complete, reinstall the oil drain bolt and tighten securely, but do not overtighten to avoid stripping threads.
  • Add New Oil
    • With a clean funnel, pour in approximately 1 quart (0.95 L) of 10W-40 motorcycle oil into the filler hole.
    • Do not use dirty funnels or tools to avoid contamination.
    • Reinstall the oil filler cap/dipstick.
  • Check Oil Level
    • Let the oil settle for a few moments.
    • Unscrew the dipstick, wipe it clean, reinsert (do not screw in), then remove to check the level. Oil should be between the "Low" and "Full" marks.
    • Add oil if necessary, but do not exceed the upper limit.
  • Final Check
    • Start the engine and let it idle for 3–5 minutes again. Inspect for leaks at the drain bolt.
    • Turn the engine off and let oil settle for a minute; recheck the oil level and top off if needed.
  • Dispose of Oil Properly
    • Pour the used oil into the original container or an appropriate jug and take it to a recycling or disposal center. Never dump oil on the ground or in household trash.

2007 Honda CRF100F Model-Specific Call-Outs

  • Oil Capacity: Approximately 1 quart (0.95L) for an oil change without filter removal, which is the standard routine for this model.
  • Drain Plug Size: 14mm hex bolt is used for the drain bolt on the 2007 CRF100F.
  • Oil Recommendation: Use high-quality 10W-40 motorcycle oil, formulated for wet clutch compatibility. Never add oil additives.
  • No oil filter element service is required during a standard oil change on the CRF100F, as this model does not feature a replacement cartridge-type oil filter (it uses a screen to catch debris instead).
  • Routine Interval: Change oil every 15–20 hours of riding or after every few rides, especially if riding in harsh conditions.
  • Cleanliness: Always ensure the area around the filler and drain bolt is very clean to prevent engine contamination.

Quick Tips for the 2007 CRF100F Oil Change

  • Always use a clean funnel and never reuse dirty containers for new oil.
  • Warm oil drains better, ensuring you get as much of the old oil out as possible.
  • Check your dipstick regularly between changes to avoid running low, especially after aggressive rides.
  • Consult your owner’s manual for torque specs if unsure; overtightening the drain plug can damage the crankcase.

This MotoSport.com guide helps keep your 2007 Honda CRF100F performing at its best with a simple, effective oil change routine.

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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.