How to Change the Oil in a 2007 Suzuki RM250: Complete Guide

Shop parts for a 2007 Suzuki RM250 Dirt Bike.

Keeping your 2007 Suzuki RM250 in optimal condition means regular oil changes. This guide from MotoSport.com will walk you through every step and detail you need to know, including special callouts unique to your RM250.

Tools and Materials Needed

  • Socket wrench with metric sockets (including 8mm and 10mm)
  • Allen key set
  • Drain pan large enough for at least 1 quart
  • Funnel
  • Shop towels or rags
  • New engine/transmission oil (10W40 recommended)
  • Replacement oil check bolt O-ring (optional)
  • Torque wrench (optional but recommended)
  • Gloves (optional)

Oil Type and Capacity

  • Recommended Oil: 10W40 (high-quality motorcycle-specific transmission oil)
  • Transmission Oil Capacity: Approximately 750ml (always verify with your owner–s/service manual)

Step-by-Step Guide to Changing the Oil

  1. Prepare the Bike
    • Start the engine and let it idle for a few minutes to warm up. Warm oil drains more easily and removes more contaminants.
    • Turn the engine off and place your RM250 upright on level ground using a stand.
  2. Locate the Drain Plug
    • The main oil drain plug is located underneath the engine near the bottom of the transmission case.
    • Place your drain pan directly beneath the drain plug to catch the used oil.
  3. Remove the Drain Plug and Drain the Oil
    • Using your socket wrench, remove the drain plug carefully.
    • Allow all the oil to fully drain into your pan. This can take several minutes. Tilt the bike slightly side to side if needed for a complete drain.
    • Inspect the drain plug for metal shavings and clean it before reinstalling.
  4. Replace the Drain Plug
    • Reinstall the drain plug once draining is complete, tightening securely but not over-torquing. Use a torque wrench if available (check your service manual for the proper spec).
  5. Check the Oil Check Bolt (RM250 Specific)
    • The RM250 features an oil check bolt located behind the left side chain guard and a bundle of wires. Remove the chain guard and gently move wires aside to access the Allen bolt (oil check bolt).
    • It's about 1 inch long and requires an Allen key to remove. This allows you to check the oil level during refill.
      Pro tip: Many owners overlook the location of this bolt, so take your time to access it safely without pinching wires or losing the bolt behind components.
  6. Refill with New Oil
    • Remove the transmission fill cap (usually located on the right side of the engine).
    • Use a clean funnel to pour in new 10W40 oil. Start slowly and pour around 700ml, then check level at the oil check bolt.
    • Continue to fill until oil just begins to run out of the oil check bolt hole. This indicates the correct level.
    • Replace the oil check bolt and transmission fill cap securely.
  7. Inspect for Leaks and Clean Up
    • Start the engine and let it run for 30 seconds. Shut it off and check for leaks at the drain and check bolts.
    • Re-inspect the oil level if needed.
    • Safely dispose of used oil according to local regulations.

Specific Owner Call-Outs for the 2007 Suzuki RM250

  • The oil check bolt location is not obvious: it’s hidden behind the chain guard and wires on the left side—plan for extra time during your first oil change to access it smoothly. Improper level checks can lead to incorrect filling.
  • Always use a new O-ring or gasket for the oil check bolt if you notice any damage or wear to prevent leaks.
  • Never overfill—the correct level is when oil just seeps from the oil check bolt opening.
  • Check your service manual for torque specs on the drain and check bolts for best practice.

Conclusion

Regular oil changes are critical for your RM250’s performance and longevity. Pay attention to model-specific quirks—particularly the hidden oil check bolt—follow suggested torque specs for all hardware, and always use fresh, high-quality transmission oil. Following this guide ensures your 2007 Suzuki RM250 delivers peak performance for every ride.

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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.