How to Change the Oil in a 2018 Yamaha TTR50

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Routine oil changes are essential for keeping your 2018 Yamaha TTR50 running smoothly and lasting longer. This guide walks you step-by-step through the oil change process, outlines the tools needed, and highlights specific tips for this make, model, and year.

Tools and Supplies You'll Need

  • 10W-40 motorcycle engine oil (Yamalube or any major brand, 800ml capacity)
  • 17mm socket and socket wrench
  • Oil drain pan or tray
  • Funnel
  • Rags or paper towels
  • Dipstick (built into the oil fill cap)
  • Torque wrench (optional but recommended for tightening the drain bolt to spec)
  • Nitrile gloves (to keep hands clean)

Preparation Steps

  • Warm up the engine:– Start your TTR50 and let it idle for several minutes so the oil can warm up. Warm oil drains out more completely, taking contaminants with it.
  • Stabilize the bike:– Place the bike on a solid, level surface, preferably using a bike stand for maximum stability. The kickstand can work, but ensure the bike can't tip over.
  • Gather your tools:– Have everything handy, as oil changes are quick and you don't want to pause mid-step.

Step-by-Step Oil Change Instructions

  1. Remove the drain bolt:–
    • Locate the oil drain bolt on the underside of the engine case—it's a 17mm bolt.
    • Position your oil drain pan underneath the bolt.
    • Use the 17mm socket and wrench to loosen and completely remove the drain bolt.
    • Allow the oil to drain fully. This may take a few minutes, especially if the bike wasn't fully warmed.
  2. Replace and tighten the drain bolt:–
    • Check the crush washer on the drain bolt for wear or damage. Replace if necessary.
    • Hand-thread the drain bolt back in.
    • Use the wrench to tighten firmly. Do not over-tighten—just a solid snug torque to avoid stripping the threads.
    • If you have a torque wrench, tighten to Yamaha's specified torque (typically around 14 ft-lb/20 Nm, but double-check your owner's manual).
  3. Refill with fresh oil:–
    • Remove the oil filler cap and dipstick (right side of the engine).
    • Insert a funnel and pour in approximately 800ml (0.85 US quarts) of 10W-40 motorcycle oil.
    • It's safer to start with 700–750ml, then top off in the next step as needed.
    • Reinstall the dipstick and filler cap.
  4. Check oil level:–
    • With the bike upright and sitting level, remove the dipstick but do not screw it in.
    • Wipe it clean, reinsert (not screwing in), and check the oil level.
    • The oil should be between the min and max marks on the dipstick.
    • If underfilled, add oil a small amount at a time until you reach the correct level.
  5. Run and recheck:–
    • Start the engine and let it idle for a minute or two.
    • Turn it off and wait a few minutes for oil to settle back into the crankcase.
    • Repeat the dipstick check, topping off as needed. Do not overfill.
  6. Dispose of used oil responsibly:–
    • Pour the old oil from the drain pan into a sealed container.
    • Take it to your local recycling or hazardous waste center. Most auto parts stores accept used oil for recycling.

Model-Specific Tips and Call-Outs for the 2018 Yamaha TTR50

  • Oil Quantity:–
    • The correct oil capacity is 800ml (0.85 US quarts). Overfilling can cause oil to be forced into the airbox and result in poor running or leaks. It's better to slightly underfill, check, and top off as needed.
  • No oil filter to change:–
    • The TTR50 does not use a replaceable oil filter. Regular oil changes are even more important for prolonging engine life.
  • Recommended interval:–
    • Change oil every 10 hours of riding (or as specified in your manual), or at least every few months if not used frequently.
  • Dipstick Method:–
    • Always check the oil level with the bike vertical and the dipstick only inserted, not screwed in.
    • A tilted bike or incorrectly inserted dipstick leads to inaccurate readings.
  • Use quality oil:–
    • Yamaha recommends a quality motorcycle oil, such as Yamalube 10W-40.

Pro Tips

  • Label the oil drain bolt or keep a reminder of the torque spec in your workspace.
  • Clean your tools and any drips before and after—this keeps your work area safe and tidy.
  • Changing the oil while the bike is still warm (but not hot) makes the job easier and more effective.

Performing regular oil changes ensures your 2018 Yamaha TTR50 is always ready for adventure. If you have more questions about this or other maintenance, trust MotoSport.com for expert advice, parts, and service supplies.

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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.