How to Change the Oil in a 1995 Honda CR250: A Step-by-Step Guide

Shop parts for a 1995 Honda CR250 Dirt Bike.

Changing the transmission (gearbox) oil in your 1995 Honda CR250 is vital for engine longevity and smooth shifting. Whether you just finished a race or are preparing for your next trail ride, staying on top of your oil changes will help avoid costly repairs and maximize your dirt bike’s performance. This proprietary guide for MotoSport.com walks you through the process with clear instructions and model-specific tips.

Tools and Supplies Needed

  • 17mm socket or wrench (for drain bolt)
  • 10mm socket or wrench (for oil check and fill bolts)
  • Drain pan or oil catch container
  • Funnel
  • Rubber gloves
  • Clean rags
  • Measuring cup (Ratio Rite or similar)
  • 500cc + 150cc of quality transmission oil (Honda GN4 10W40, Maxima MTL, or equivalent recommended. Avoid oils with molybdenum additives.)
  • New copper crush washer for drain bolt (optional but recommended)

Step-by-Step Oil Change Procedure

  1. Warm the Engine:
    • Start your CR250 and let it run for 2-3 minutes. This helps heat the oil so it drains more completely.
  2. Prepare the Work Area:
    • Place your bike on a level stand.
    • Put the oil drain pan directly under the drain bolt, which is located under the main engine case.
  3. Remove the Drain Bolt:
    • Using your 17mm socket, slowly loosen and remove the drain bolt. Wear gloves as the oil will be hot. Let the oil flow out completely.
    • If the copper washer on the drain bolt looks worn, replace it with a new one. This prevents leaks.
  4. Remove the Filler Cap:
    • Take off the filler cap (located on the right/clutch side of the engine) to allow oil to drain more easily.
  5. Inspect and Reinstall the Drain Bolt:
    • Clean the drain bolt and ensure no old gasket/washer material is stuck to the case. Install a new crush washer if you have one.
    • Tighten the drain bolt to 22 ft-lbs (29 Nm) to avoid stripping threads.
  6. Measure and Add New Oil:
    • This model takes 0.69 US quarts (or 650cc) of oil. An easy method:
      • Fill measuring cup to 500cc. Pour into engine through a funnel.
      • Add another 150cc to reach the full capacity.
    • Use only recommended transmission oil to protect your clutch (avoid oils with molybdenum additives as they can cause clutch slip).
  7. Check Oil Level:
    • After filling, reinstall the filler cap.
    • Start the bike and let it idle for 2-3 minutes. Shut it off.
    • Remove the oil check bolt (10mm, with a copper washer; found on right side next to the clutch cover—look for the bolt with a copper washer) and check: if oil flows out, the level is correct. If not, add oil a little at a time until it just drips from the check bolt hole.
    • Reinstall oil check bolt snugly with its washer.
  8. Final Inspection:
    • Check for leaks around the drain plug, check bolt, and filler cap.
    • Wipe down any spills with a clean rag.
    • Dispose of used oil responsibly (auto parts stores usually accept waste oil).

CR250-Specific Notes

  • Crush washer replacement is important for this era of Honda CR250. A fresh copper washer ensures a good seal; neglecting this can result in slow leaks over time.
  • The oil check bolt can be identified by the small copper washer. It’s located to the right of the clutch cover and is an essential step for setting the correct oil level.
  • Change transmission oil every 3 races or 7.5 hours of operation for best performance.
  • Recommended oils include Honda GN4 10W40, Maxima MTL, or Pro Comp Honda HP Trans Oil.
  • Do NOT use car engine oils or synthetic oils with molybdenum; these can shorten clutch life and cause slipping.

Conclusion

Regular oil changes on your Honda CR250 are straightforward once you know the correct tools and steps. Proper oil type, fresh crush washers, and careful leveling are the main concerns for this machine. Keeping on top of this simple maintenance will help you enjoy many more hours—and races—on your 1995 Honda CR250.

This guide is proprietary to MotoSport.com and tailored specifically to the 1995 Honda CR250 for maximum accuracy and rider benefit.

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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.