How to Change the Oil in a 1998 Yamaha TW200

Shop parts for a 1998 Yamaha TW200 Dirt Bike.

Changing the oil in your 1998 Yamaha TW200 is one of the most important routine maintenance tasks to ensure long engine life and reliable performance. This guide, proprietary to MotoSport.com, walks you through every step, detailing the required tools, workflow, and model-specific considerations.

Tools and Materials Needed

  • 10W-40 motorcycle-specific oil (1.1 quarts or approximately 1.04 liters for the TW200 – check your owner's manual to confirm)
  • New oil filter
  • New drain bolt O-ring and oil filter cover O-ring (recommended, especially if old ones are worn)
  • Socket wrench set (typically 12mm or 17mm socket for drain bolt, 8mm for filter cover)
  • Torque wrench (for correct bolt tightening)
  • Oil drain pan
  • Funnel
  • Gloves
  • Clean rags
  • Pick tool (optional, to remove O-rings easily)

Before You Begin

  • Warm up the engine by running it for a few minutes. This helps the oil drain more thoroughly.
  • Ensure the motorcycle is on a level surface. Use the center stand if equipped, or a stable paddock stand.
  • Gather all supplies so the process is smooth from start to finish.

Step-by-Step Oil Change Process for Yamaha TW200 (1998)

  1. Remove the Skid Plate (if equipped).
    • Many TW200s have a skid plate. Remove it for easy access to the drain plug and filter.
  2. Drain Old Oil.
    • Place the oil catch pan under the drain bolt, which is located on the bottom of the crankcase.
    • Using your socket wrench, carefully loosen and remove the drain bolt.
    • Allow the oil to flow out completely. This may take several minutes. Caution: the oil will be hot.
    • Remove the oil filler cap on top of the engine to help the oil drain more easily.
  3. Clean and Inspect the Drain Plug.
    • The drain plug contains an oil screen/strainer and O-ring. Remove both, inspect the screen for debris, and clean it.
    • Replace the O-ring if it’s cracked, flattened, or feels brittle.
  4. Remove and Replace the Oil Filter.
    • The oil filter is housed behind a small cover on the right side of the engine.
    • Loosen the three cover bolts with your 8mm socket.
    • Carefully remove the old filter; be mindful of oil drips.
    • Note the spring and O-ring behind the filter—make sure you don’t lose them. Replace the O-ring if it’s at all questionable.
    • Wipe the filter cavity clean and install the new filter in the correct orientation. The open end faces out.
    • Reinstall the filter cover and tighten the bolts a little at a time in a cross-pattern to ensure even sealing.
    • Torque Spec for Filter Cover Bolts: Hand-tight plus a 1/4 turn, or consult manual for exact spec.
  5. Reinstall Drain Plug.
    • With a new or inspected O-ring and clean screen, reassemble and reinstall the drain plug.
    • Torque Spec: 43 Nm (Newton-meters) for the 1998 TW200 drain bolt.
  6. Refill with New Oil.
    • Using a clean funnel, pour in the specified amount of 10W-40 motorcycle oil.
    • It takes just over 1 quart (check your manual for exact capacity), but add about 0.9 quart, then check the sight glass and slowly top it off as needed.
    • Make sure the bike is upright and level for accurate sight glass reading.
    • Install the oil filler cap and wipe away any drips.
  7. Start and Run the Motorcycle.
    • Start the engine and let it idle for 1–2 minutes as fresh oil circulates through the system.
    • Shut off the engine and let it sit for a minute.
    • Check the oil level in the sight glass again. Add oil to adjust if it’s not in between the upper and lower lines.
  8. Reinstall Skid Plate and Clean Up.
    • Reinstall the skid plate, if it was removed.
    • Dispose of the old oil and filter responsibly at a recycling facility.
    • Clean any oil residue from the engine and surrounding area.

Model-Specific Tips and Call-Outs for 1998 Yamaha TW200

  • O-Rings: The TW200 uses both a drain plug O-ring and filter cover O-ring. Always check these; leaks are usually caused by reusing old or damaged O-rings.
  • Oil Capacity: The TW200 requires just over 1 quart; filling too much or too little oil can damage the engine.
  • Drain Screen: The oil drain plug contains a mesh screen that should be cleaned every oil change; this traps any larger debris or particles and prevents them from circulating.
  • Bolt Torques: Use a torque wrench, as overtightening can strip threads in the aluminum engine cases.
  • Sight Glass: Use the sight glass on the right side of the crankcase to verify oil level; do not rely solely on oil amount poured in.
  • Warm-Up: Warming the bike before draining oil helps ensure more complete drainage and thinner oil flow.
  • Part Numbers: When ordering replacement parts (oil filter, O-rings), refer to a Yamaha parts fiche for your exact year/model, as the 1998 TW200 is nearly identical to later years but always double-check for compatibility.

Conclusion

Regular oil changes on your 1998 Yamaha TW200 keep it running its best on and off road. With these model-specific steps and recommendations, this essential DIY maintenance is simple, affordable, and rewarding. For all your TW200 oil change kits and Yamaha OEM parts, trust MotoSport.com for fast shipping and expert support.

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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.