How to Change the Oil in a 1994 Yamaha XT350

Shop parts for a 1994 Yamaha XT350 Dirt Bike.

Performing an oil change on your 1994 Yamaha XT350 is essential for maintaining engine longevity and peak performance. This detailed DIY guide is proprietary to MotoSport.com and covers the exact process, the tools and materials required, and specific call-outs for this classic dual-sport dirt bike model.

Tools and Materials Needed

  • Socket wrench set
  • Oil drain pan
  • New oil filter (OEM recommended)
  • Fresh engine oil (SAE 20W40 Type SE or SAE 10W40 compatible, capacity 1.3 L for oil change, 1.4 L if replacing oil filter)
  • Funnel
  • Clean rags or paper towels
  • Gasket or O-ring (as needed, inspect for wear)
  • Torque wrench (for drain bolt and filter cover screws)
  • Safety gloves

1994 Yamaha XT350 Oil Change Procedure

  1. Warm up the engine
    • Start and let the engine come up to operating temperature for several minutes. This helps the oil flow and drains easily without burning you. Do not make the engine too hot to touch.
  2. Secure the motorcycle
    • Place the bike upright on a level surface. A slight tilt can give you an inaccurate oil level reading. Use a center stand or other bike lift if available.
  3. Locate drain plug and oil filter
    • The drain plug is on the underside of the engine. The oil level window is at the lower right crankcase cover, and the oil filter cover is also on the right side.
  4. Drain the old oil
    • Remove the oil filler cap first for better flow.
    • Position your oil pan under the drain plug and carefully remove the drain bolt with a socket wrench.
    • Let the engine oil drain completely into the pan.
    • Remove also the air bleed screw for thorough drainage, if equipped.
  5. Inspect and clean components
    • Check the drain plug and washer or O-ring for damage.
    • Replace if worn, as a faulty gasket or O-ring may cause future oil leaks.
  6. Replace the oil filter
    • The oil filter cover is held by three screws. Remove the lowest screw first to allow the filter cavity to drain.
    • Remove the old filter (refer to your service manual for orientation).
    • Clean the filter element with solvent if reusing, or install a new filter cartridge.
    • Check the O-rings–replace if damaged and ensure they are seated properly before reassembly.
  7. Reinstall drain bolt & filter cover
    • Once drained, reinstall the drain plug and new/cleaned washer. Tighten with a torque wrench to factory specification (43 Nm / 31 ft-lb for drain bolt, 10 Nm / 7.2 ft-lb for filter cover screws) for the XT350.
    • Reinstall the oil filter, filter cover, and screws–ensure everything is secure but not over-torqued.
  8. Refill with fresh oil
    • Insert a funnel in the oil filler neck and pour in 1.3 L of SAE 20W40 (or 10W40) for an oil change only, or 1.4 L if you replaced the oil filter.
    • Replace the filler cap.
  9. Check and top off oil level
    • Start the engine and idle for a few minutes to circulate new oil.
    • Stop the engine and wait several minutes for oil to settle.
    • With the bike upright, check the oil level window. Add oil gradually if the level is below the maximum mark, but do not overfill.
  10. Inspect for leaks and proper operation
    • Run the engine and recheck for leaks at the drain bolt, oil filter cover, and oil filler cap.
    • Clean up any spills and properly dispose of the old oil and filter according to local regulations.

XT350-Specific Oil Change Call-Outs

  • Oil type and volume: Yamaha recommends SAE 20W40 SE oil, though SAE 10W40 is also widely used and available. Oil change: 1.3 L, Oil + filter change: 1.4 L. Do not overfill, as excess oil can cause smoking or poor performance.
  • Filter orientation: The OEM-style filter should be installed with the open end facing out. Be sure the spring and O-ring are in place behind the filter for a proper seal.
  • Oil inspection window: Always check the oil level with the bike absolutely upright. Even a minor tilt can give a false reading.
  • Gasket/O-ring integrity: A worn drain plug washer or filter cover O-ring is a common leak culprit on older XT350s. Carefully inspect and replace if needed to prevent future issues.
  • Proper bolt torque: Over-tightening the drain plug or filter cover screws can strip threads in the aluminum cases. Use a torque wrench and stick to the specs.

Conclusion

Changing the oil in your 1994 Yamaha XT350 is straightforward with a few basic tools, some attention to detail, and proper parts. By maintaining the correct oil level and using the recommended filter and lubricant, your XT350 will reward you with smooth operation and reliable power for years to come. For authentic Yamaha parts, filters, and detailed support, shop MotoSport.com — your trusted dirt bike experts.

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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.