Yanmar YT

Differential fluid capacity & service interval

Yanmar YT differential fluid capacity is 5 liters. Service intervals include checking at 50 hours and changing at 300 hours. The data covers 3 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • YT118 (2019- )
  • Front
  • Use: Normal
  • Capacity 5 liter
  • Check 50 hours
  • Change 300 hours
  • YT120 (2019- )
  • Front
  • Use: Normal
  • Capacity 5 liter
  • Check 50 hours
  • Change 300 hours
  • YT122 (2019- )
  • Front
  • Use: Normal
  • Capacity 5 liter
  • Check 50 hours
  • Change 300 hours

Additional Notes

  • The front differential on the Yanmar YT118, YT120, and YT122 each carries a capacity of 5 liters, which represents the service fill volume for normal operating conditions.
  • A fluid level check interval of 50 hours applies to the front differential across all three models, reflecting a relatively frequent inspection cadence typical of working equipment subject to load and heat cycles.
  • The fluid change interval is set at 300 hours under normal use conditions for the front differential on all three models listed.
  • The 50-hour check interval and 300-hour change interval together establish a six-to-one ratio between inspection and replacement, meaning fluid condition is monitored multiple times before a full drain and refill is due.
  • All three configurations share an identical 5-liter capacity, identical check intervals, and identical change intervals, indicating no variation in front differential service specifications across the YT118, YT120, and YT122 for the 2019 starting model year.

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