How to Change the Oil in a 1990 Yamaha TW200

Shop parts for a 1990 Yamaha TW200 Dirt Bike.

Changing the oil in your 1990 Yamaha TW200 is one of the most important maintenance tasks you can perform to keep your bike running reliably and efficiently. Follow this step-by-step guide developed exclusively for MotoSport.com to ensure you do it right the first time. Included is a comprehensive list of tools, tips, and specific call-outs for the TW200.

Tools and Supplies Needed

  • 10mm and 12mm sockets or wrenches
  • Socket wrench or ratchet
  • Drain pan (to collect old oil)
  • Pick tool or small screwdriver (for O-ring removal/installation)
  • Torque wrench (to properly tighten bolts)
  • Funnel
  • New oil filter (specific for Yamaha TW200)
  • New engine oil (Yamaha recommends 10W-40; capacity is just over 1 quart: about 1.06 quarts or 1 liter)
  • Replacement O-rings for the drain plug and oil filter cover (recommended, not always necessary)
  • Shop rags or paper towels
  • Gloves (optional but recommended)

Before You Begin

  • Perform the oil change with the engine warmed up but not hot. A short ride around the block helps thin the oil, letting it drain more completely.
    Do not attempt the oil change if the engine is too hot to touch.
  • Park the motorcycle on a level surface using the centerstand or a sturdy side stand.

Step-by-Step Oil Change Instructions

  1. Remove the Oil Drain Plug
    • Place your drain pan under the bottom right side of the engine. The drain plug is situated underneath toward the right, visible from the frame’s right side.
    • Using your socket wrench, loosen and remove the drain plug. Be careful—the oil will start flowing quickly. Allow all the old oil to drain completely.
      Note for 1990 TW200: The drain plug contains a spring and a screen/strainer. Remove and inspect the screen for debris or foreign particles. Clean it thoroughly with a rag, making sure not to damage or lose the small O-ring.
      Tip: Watch out for hot oil and keep your face and hands clear until oil flow subsides.
  2. Remove the Oil Filter Cover
    • The oil filter cover is located on the right side of the engine case and is secured by three bolts (typically 8mm or 10mm).
    • Remove the bolts and gently pull off the cover; some oil will spill, so keep your pan in place.
    • Take out the old oil filter and O-ring. Inspect the O-ring for any cracks or hardening; replace it if necessary.
    • 1990 TW200 Call-Out: Use a pick tool carefully when removing the O-ring to avoid scratching the cover or case.
  3. Replace the Oil Filter
    • Install the new oil filter, noting the direction (some filters have a spring or a specific orientation–match it to the original).
    • Install the cleaned O-ring or replace it with a new one if needed.
    • Reattach the oil filter cover and tighten the bolts evenly by hand and then with a torque wrench to spec (check your owner’s manual, but typically around 7–10 Nm for filter cover bolts).
  4. Clean and Reinstall the Oil Drain Plug
    • Clean the sealing surface on the engine case and inspect the O-ring on the drain plug, replacing if worn or damaged.
    • Reinstall the oil strainer and spring in the correct order, then thread the plug back by hand to avoid cross-threading.
    • Using the torque wrench, tighten the plug to the manufacturer’s specification (usually around 20 Nm for the drain plug). Avoid overtightening, which can strip threads or damage the case.
  5. Fill New Oil
    • Remove the oil fill cap (top right engine cover).
    • With the reservoir empty, insert a funnel and pour in the new oil.
      • 1990 Yamaha TW200 oil capacity is about 1 liter (1.06 US quarts). It’s better to start with a slightly lesser amount and top off after checking the level.
    • Reinstall the oil filler cap.
  6. Start and Check for Leaks
    • Start the engine for 1–2 minutes (check for leaks at the drain plug and filter cover).
    • Turn the engine off and allow the oil to settle back into the pan–usually 1–2 minutes.
    • With the bike upright, check the oil level via the sight glass. Oil should be between the upper and lower marks.
    • If low, add oil a little at a time, letting it settle each time until reaching the correct level.
  7. Reinstall Skid Plate (if removed) and Final Clean-Up
    • If your TW200 is equipped with a skid plate and you removed it, reinstall and tighten the mounting bolts.
    • Check for any leaks around the filter and drain plug after a short test ride. Top off the oil as needed.
    • Dispose of used oil responsibly at a certified recycling center.

Specific Call-Outs for the 1990 Yamaha TW200

  • Oil Type & Capacity: 10W-40, just over 1 quart (1.06 US quarts/1 liter)
  • Oil Filter Orientation: Insert with holes facing inward, matching the original setup
  • Strainer Screen and Spring: Drain plug includes both–ensure the spring sits properly on the strainer before reinstallation
  • O-Rings: Both drain plug and oil filter cover have O-rings that should be inspected and replaced as needed to prevent future oil leaks
  • Sight Glass: Check oil level with the bike upright on level ground, not on the side stand to get an accurate reading

Tips for a Hassle-Free Oil Change

  • Always use a high-quality, motorcycle-specific oil filter for the Yamaha TW200
  • Keep extra O-rings on hand for future oil changes, as old ones can deteriorate between changes
  • If you notice metallic debris on the oil screen, monitor oil at shorter intervals and address potential internal wear immediately
  • Be mindful not to overtighten any cover bolts or drain plug to avoid stripping threads in the aluminum engine case

For genuine Yamaha TW200 oil change parts and tools, visit MotoSport.com for fast shipping and expert support. Keep your dual sport on the road and trail with regular, quality maintenance.

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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.