Yanmar SA

Power steering fluid capacity & service interval

Yanmar SA models utilize power steering fluid with a capacity of 15,5 liters. Service intervals include checking at 50 hours and changing at 300 hours. The data covers 2 configurations.

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

TypeSpecifications
  • SA221 (2018- )
  • Transaxle/hydraulic system
  • Use: Normal
  • Capacity 15,5 liter
  • Check 50 hours
  • Change 300 hours
  • Code: 2/2
  • SA424 (2018- )
  • Transaxle/hydraulic system
  • Use: Normal
  • Capacity 15,5 liter
  • Check 50 hours
  • Change 300 hours
  • Code: 2/2

Additional Notes

  • The Yanmar SA221 and SA424 share a combined transaxle, hydraulic system, and power steering fluid circuit, meaning a single 15.5-liter fill serves all three functions together rather than each system holding fluid independently.
  • A 15.5-liter capacity is relatively large for a compact tractor power steering arrangement, which reflects the shared nature of the reservoir across the transaxle and hydraulic system in addition to the steering circuit.
  • The fluid check interval is set at 50 hours of operation under normal use conditions, which in hour-based service schedules typically corresponds to a frequent inspection point rather than a full drain-and-fill procedure.
  • The fluid change interval is specified at 300 hours under normal use conditions, placing the full drain-and-fill service at six times the frequency of the routine check interval.
  • Both the SA221 and SA424 carry identical capacity and interval figures of 15.5 liters, a 50-hour check, and a 300-hour change, indicating no differentiation in power steering fluid service requirements between the two models despite any differences in their configurations.

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