How to Change the Oil in a 1989 Yamaha TW200: A Complete Guide

Shop parts for a 1989 Yamaha TW200 Dirt Bike.

Changing the oil in your 1989 Yamaha TW200 is an essential maintenance step that helps prolong engine life and ensure reliable performance on and off the trails. This step-by-step guide covers specific details for the TW200, with tips and best practices every owner should know. All information is proprietary to MotoSport.com.

Tools & Materials Needed

  • 10mm, 8mm, and 19mm sockets
  • 5mm Allen socket
  • T40 Torx bit (if skid plate must be removed)
  • Socket wrench and handle
  • Torque wrench
  • Oil drain pan
  • Funnel
  • Replacement engine oil (SAE 10W-40 recommended for the TW200)
  • Replacement oil filter
  • O-rings for the drain bolt and filter cover
  • Clean rags or shop towels
  • Nitrile gloves and safety glasses
  • Contact cleaner (optional)

Preparation and Safety

  • Warm up the engine for 2-3 minutes. Warm oil flows more freely and carries out more contaminants.
  • Turn off the engine and place the bike securely on its kickstand or center stand.
  • Lay out tools and parts for easy access.

Oil Change Steps

  1. Remove the skid plate (if equipped).
    • Use the T40 Torx bit and/or 10mm socket to unscrew bolts and remove the skid plate for clear access under the engine.
  2. Locate the drain plug and oil filter cover.
    • The oil drain bolt is on the bottom-left side of the engine case. The oil filter cover is secured by two 8mm bolts and a 5mm Allen head bolt.
  3. Drain the engine oil.
    • Place the drain pan beneath the drain bolt.
    • Use a 19mm socket to remove the drain bolt and allow oil to fully drain. Take care, as hot oil can cause burns.
    • Inspect the drain bolt’s O-ring for any cracks or deformation. Replace it if damaged

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  4. Remove and inspect the oil filter.
    • Using an 8mm socket and 5mm Allen, remove the oil filter cover.
    • Take care to note the orientation of the old filter–a common mistake is to install the new filter backwards, which can block oil flow

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    • Remove the old oil filter; discard if it’s a paper filter, or inspect and clean if you use a reusable type.
    • Check and, if necessary, replace the cover’s O-rings.
  5. Clean the drain screen.
    • The TW200 features a small drain bolt screen to catch debris. Remove it per your owner’s manual and clean it before reinstallation

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  6. Reinstall filter and drain bolt.
    • Fit the new oil filter in the correct orientation. Double-check your work to avoid oil starvation to the engine.
    • Reinstall the cover, torque bolts to manufacturer specs (consult your manual; usually 7.2 ft-lb for filter cover bolts and 31 ft-lb for drain bolt for most TW200 model years, but always confirm).
    • Fit the cleaned screen and install the drain bolt with a new O-ring if needed.
  7. Refill with oil.
    • Insert a funnel into the oil fill cap on the right side of the engine.
    • Pour in the recommended oil. The 1989 TW200 requires about 1.1 quarts (1.0 L) after a filter change. Pour slowly and avoid overfilling

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    • Replace and tighten the fill cap.
  8. Check for leaks and oil level.
    • Start the engine and run for 1–2 minutes, then shut it down and wait several minutes.
    • Inspect the drain plug and oil filter area for leaks.
    • With the bike perfectly upright, check the oil level in the sight glass. Top off if needed.
  9. Reinstall the skid plate (if removed).
    • Secure all bolts and torque to specification.
  10. Dispose of the old oil and filter responsibly.
    • Bring used oil to an authorized recycling center.

Model-Specific Callouts for 1989 Yamaha TW200

  • Oil Capacity: For the 1989 model, oil capacity is approximately 1.0–1.1 L (about 1.1 quarts) when including the oil filter change.
  • Torque Specs: Always check the TW200 owner’s manual for model-year specific torque specs, as fastener tolerance may vary slightly depending on year and prior service.
  • O-rings: Be sure to inspect and replace both the drain bolt and filter cover O-rings at each change. Cracked O-rings are a common source of leaks on older bikes

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  • Oil Filter Orientation: Double-check filter placement. Reversing the filter can cause catastrophic engine damage due to loss of oil pressure

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  • Oil Type: Yamaha recommends SAE 10W-40 for the original air-cooled engine, but always consider local climate and riding intensity when choosing oil viscosity

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Final Tips

  • Maintain an oil change interval of every 4,000 miles or at least once a season for the 1989 TW200 unless riding in severe conditions, in which case increase frequency

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  • Always use motorcycle-specific or JASO MA-rated oil for wet-clutch compatibility.
  • Keep a log of oil changes for better long-term maintenance tracking.

Regular oil changes keep your 1989 Yamaha TW200 running hard and reliable, whether commuting or carving up off-road trails. For all your maintenance supplies, trust MotoSport.com—your source for genuine parts, filters, oils, tools and expert dirt bike resources.

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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.