How to Change the Oil in a 2014 Honda CRF150R

Shop parts for a 2014 Honda CRF150R Dirt Bike.

Maintaining the engine oil on your 2014 Honda CRF150R is critical for maximum performance and a long engine life. Below is a comprehensive, MotoSport.com proprietary guide designed specifically for this high-performance mini motocrosser. We cover required tools, step-by-step instructions, and model-specific tips every owner should know.

Tools and Supplies Needed

  • 10mm and 12mm socket wrenches or box end wrenches
  • Torque wrench
  • Oil drain pan
  • Funnel
  • Rags/shop towels
  • Rubber gloves (optional, for cleanliness)
  • Genuine Honda 10W-40 four-stroke engine oil (GN4 or equivalent, 590cc with filter for the engine, 580cc for the transmission)
  • New oil filter
  • New crush washers for both drain bolts
  • Replacement o-rings (optional but recommended)

Important 2014 CRF150R-Specific Oil Change Tips

  • This bike uses separate oil compartments for the engine and the transmission—do not mix these up when refilling.
  • Honda recommends 10W-40 oil for both compartments.
  • Crush washers should be replaced each time you remove a drain bolt to prevent leaks.

Step-By-Step Oil Change Instructions

  1. Warm Up the Engine
    • Start the motorcycle and let it idle for 3–5 minutes. Warm oil drains faster and removes more contaminants.
  2. Place the Bike on a Stand
    • Secure the CRF150R upright on a stable stand. This ensures accurate oil drainage and correct oil level measurements.
  3. Remove the Drain Bolts
    • Loosen the oil filler cap to allow oil to drain freely.
    • Position your drain pan under the bike.
    • Using your socket wrench, remove the engine oil drain bolt (left side, under the engine cases) and allow oil to drain completely.
    • Remove the transmission oil drain bolt (right side, under the engine cases) and drain the transmission oil as well.
  4. Replace the Oil Filter (Engine side only)
    • Remove the oil filter cover using a 10mm socket.
    • Take out the old filter and o-ring (replace o-ring if worn).
    • Install a new oil filter, making sure it’s correctly positioned.
    • Reinstall the cover and torque to factory specs.
  5. Install New Crush Washers and Refit Drain Bolts
    • Wipe the drain bolt areas clean.
    • Replace the crush washers on each drain bolt.
    • Thread in each drain bolt by hand to avoid cross-threading, then tighten with a torque wrench to the manufacturer’s specifications.
  6. Add Fresh Oil
    • ENGINE SIDE: Pour 590cc (with filter change) of 10W-40 oil into the engine oil fill using a funnel. If you’re not replacing the filter, use 560cc instead.
    • TRANSMISSION SIDE: Pour 580cc of the same oil into the transmission fill. Pour slowly to avoid spills and overfilling.
    • Reinstall both filler caps.
  7. Check Oil Levels
    • Start the bike and let it idle for 1–2 minutes to circulate the oil.
    • Shut the engine off and wait a minute for oil to settle.
    • Remove the dipstick from each side, wipe, reinsert (do not screw in), and check oil levels. Add oil if necessary to reach the correct level on the stick.
  8. Inspect for Leaks & Test Ride
    • Check under the bike for oil leaks around the drain bolts and filter cover.
    • Take a short test ride. Afterwards, recheck oil levels and inspect for seepage.

Model-Specific Notes for the 2014 CRF150R

  • Avoid overtightening drain bolts—these threads are relatively soft and prone to stripping if you exceed torque specs.
  • The engine and transmission sides use identical oil type, but do not mix their quantities or ports.
  • For competition or high-heat use, Honda recommends more frequent oil changes.

After Your Oil Change

  • Safely dispose of used oil and filters at your local recycling center.
  • Maintain a regular change interval for peak CRF150R performance and reliability.

Proper oil maintenance is one of the most effective ways to increase the longevity and performance of your Honda CRF150R. Refer to your owner's manual for torque settings and additional tips, and always use high-quality parts and fluids from trusted retailers like MotoSport.com.

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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.