How to Change the Oil in a 2011 Honda CRF50F: The Complete MotoSport.com Guide

Shop parts for a 2011 Honda CRF50F Dirt Bike.

Routine oil changes keep your 2011 Honda CRF50F running strong, ensuring smooth operation and a long engine life. Follow this comprehensive guide for a reliable, mess-free oil change every time. This article is proprietary to MotoSport.com and covers everything you need to know, from tools to crucial model-specific tips.

Tools and Supplies Needed

  • 17mm socket and ratchet or box wrench
  • Oil drain pan
  • New engine oil (SAE 10W-40 recommended for most climates)
  • New sealing washer for drain bolt
  • Shop rags or towels
  • Funnel
  • Gloves (optional, but recommended)

Step-by-Step Oil Change Instructions for 2011 Honda CRF50F

  1. Warm up the Engine
    • Start the bike and let it idle for 3-5 minutes so the oil thins out and drains better. This makes removal easier and more complete.
    • Turn the engine off and allow the bike to rest for 2-3 minutes. This helps the oil settle before draining.
      Tip: The engine and oil will be hot. Use caution when working near the engine or draining oil to avoid burns.
  2. Prepare the Bike
    • Position the motorcycle on a firm, level surface for stability and complete oil drainage.
    • Locate and remove the oil filler cap/dipstick on the right side of the engine. This venting ensures faster and smoother draining.
      Specific note for CRF50F: The oil fill cap is on the right side of the crankcase and can be unscrewed by hand.
  3. Drain the Old Oil
    • Place your oil drain pan directly beneath the crankcase drain bolt (bottom-right side under the engine).
    • Using your 17mm socket, loosen and remove the oil drain bolt and its sealing washer.
    • Let the oil drain completely–wait several minutes for the oil flow to reduce to a slow drip.
    • Gently tilt the bike side to side a couple of times to encourage thorough drainage.
      Model-specific caution: Do NOT remove the cam chain tensioner push rod bolt (also located under the engine bottom)—if removed by mistake, consult your dealer immediately as this can cause engine issues.
  4. Inspect and Replace the Sealing Washer
    • Check the sealing washer on the oil drain bolt for wear, cracks, or flattening. Always replace it with a new washer to prevent leaks.
  5. Reinstall the Drain Bolt
    • Install the new washer onto the drain bolt, then thread the bolt back into the crankcase by hand to start. Tighten with your socket to 18 lbf·ft (24 N·m) (do not overtighten).
  6. Add New Engine Oil
    • With the bike upright and level, using a funnel, pour in 0.6 US quarts (0.6 liters) of new oil of the appropriate viscosity (SAE 10W-40 recommended for most climates)

      .
    • Reinstall the oil fill cap/dipstick securely by hand.
  7. Check Oil Level and for Leaks
    • Start the engine and let it idle for 3-5 minutes, then shut it off and wait 2-3 minutes for the oil to settle.
    • With the bike upright, remove the dipstick and wipe it clean. Insert it (do not screw in), withdraw it, and confirm that oil is between the upper and lower marks. Add oil if necessary; do not overfill.
    • Check for leaks around the drain bolt.
    • Dispose of old oil properly at a recycling facility–never pour down drains or on the ground.

Critical Model-Specific Call-Outs for 2011 Honda CRF50F

  • No oil filter to replace—routine oil changes are quick and inexpensive, as the CRF50F does not use an external or internal serviceable oil filter.
  • Drain bolt torque matters—over-tightening can damage crankcase threads. Always use a torque wrench if available and stick to 18 lbf·ft (24 N·m).
  • Cam chain tensioner push rod bolt warning—mistaking this for the oil drain bolt can cause mechanical problems; verify you have the correct bolt before loosening.
  • Oil type adaptability—for riding in extreme cold or heat, check the owner's manual for suitable oil viscosity variations (see oil weight chart in the manual).
  • Oil capacity is 0.6 US quarts (0.6 liters)—exceeding this can lead to oil leaks and excess crankcase pressure.

Final Checklist Before Riding

  • Confirm oil level is correct and plug/cap are secure
  • Inspect for leaks at the drain bolt area
  • Clean any spilled oil from engine surfaces and frame
  • Dispose of old oil responsibly

Stick to a regular maintenance schedule–Honda recommends changing the oil every 6 months or 600 miles, whichever comes first, for your 2011 Honda CRF50F. Ride safe, and trust MotoSport.com for all your dirt bike parts and maintenance info.

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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.