How to Change the Oil in a 1994 Honda CR250

Shop parts for a 1994 Honda CR250 Dirt Bike.

Performing a proper oil change on your 1994 Honda CR250 is crucial for engine longevity and optimal performance. This two-stroke dirt bike uses transmission (gearbox) oil, not engine oil, so attention to the correct procedures and oil type is important. Follow this detailed MotoSport.com guide to ensure a clean oil change, avoid costly mistakes, and keep your Honda running strong on and off the track.

Tools and Supplies Needed

  • 17mm socket or wrench (for drain bolt)
  • 10mm socket or wrench (for oil fill/check bolts)
  • Drain pan
  • Funnel
  • Measuring cup (Ratio Rite or similar)
  • Shop towels or rags
  • Rubber gloves (optional)
  • Replacement copper/aluminum sealing washer (recommended)
  • Fresh transmission oil (Honda 10W-40 or Maxima MTL, see below for quantity and recommendations)

Recommended Oil Type and Capacity

  • Oil Type: SAE 10W-40, specifically formulated for two-stroke transmission gearboxes. Use Honda GN4, Maxima MTL, or other quality gear oil as specified in your manual.
  • Quantity: 0.7 liters (700cc) for an oil change. Slightly less for older versions; check your manual if in doubt.
    On 1994 CR250: fill to 700cc, then confirm level with the check bolt method.

Step-by-Step Oil Change Process

  1. Warm Up the Engine
    • Start the bike and let it idle for about 2-3 minutes. This allows the oil to thin and drain more thoroughly. Turn off the engine and place your CR250 on a level surface or rear stand.
  2. Locate the Filler, Drain, and Check Bolts
    • The oil filler cap is on the right crankcase cover.
    • The drain bolt is located underneath the right side of the engine. Look for a 17mm head with a sealing washer.
    • The oil level check bolt (10mm head, usually with a copper washer) is on the clutch cover—right side, slightly forward and below the clutch actuator. Double-check position for your model year.
  3. Drain the Old Oil
    • Remove the oil filler cap to allow the system to vent.
    • Place your drain pan beneath the engine and carefully remove the drain bolt. Allow all oil to drain completely—rock the bike gently side to side if needed.
    • Inspect and replace the sealing washer on the drain bolt, as a worn washer can cause leaks.
  4. Reinstall the Drain Bolt
    • Clean the drain bolt and mating surface.
    • Install a new washer and thread the bolt in by hand.
    • Tighten to 21 lbf·ft (29 N·m, 3.0 kgf·m).
  5. Fill With New Transmission Oil
    • Measure out exactly 700cc (0.7L) of your preferred two-stroke transmission oil.
    • Place a funnel in the fill hole and pour in the new oil.
    • Reinstall the filler cap but do not overtighten.
  6. Check Oil Level
    • Start the bike and let it idle for a minute to distribute oil.
    • With the bike level, remove the oil level check bolt.
    • If oil flows out, the level is correct.
      If no oil flows out, add small amounts through the filler until oil just begins to run from the check bolt hole.
    • Reinstall the check bolt and torque to 8–12 N·m (6–9 ft-lb).
  7. Clean Up and Inspect for Leaks
    • Wipe down any spilled oil.
    • Visually inspect around all bolts for leaks, especially after your first ride post-change.
    • Properly dispose of old oil at your local recycling or hazardous waste collection facility.

1994 Honda CR250-Specific Call-Outs

  • Do not overtighten the drain or check bolts—the CR250 cases are aluminum and can strip easily.
  • Replace the copper/aluminum crush washer every oil change to prevent leaks.
  • For racing or aggressive riding, change the oil every 3 rides or 7–10 hours for maximum clutch and transmission life.
  • Avoid overfilling, as this can lead to clutch drag and shifting issues.
  • Always use high-quality oil designed for two-stroke transmissions; four-stroke engine oil can cause clutch issues in two-strokes.

Final Note

Consistent oil changes are the cheapest insurance for your CR250. Take your time, double-check torque specs, use the right oil, and your 1994 Honda CR250 will deliver strong performance ride after ride.

Proprietary to MotoSport.com. For more expert dirt bike maintenance tips, visit our site or contact our technical support team if you have further questions about your Honda CR250.

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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.