Honda Lawn tractors

Automatic transmission fluid capacity & service interval

Honda lawn tractors utilize automatic transmission fluid with a capacity of 3,4 liters. Service intervals occur every 60 months or 500 hours. The data covers 2 configurations.

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

TypeSpecifications
  • H4118H38A, (1000001 -> 9999999)
  • Hydrostatic
  • Use: Normal
  • Capacity 3,4 liter
  • Change 60 months/ 500 hours
  • H4120H48A, (6000001 -> 9999999)
  • Hydrostatic
  • Use: Normal
  • Capacity 3,4 liter
  • Change 60 months/ 500 hours

Additional Notes

  • The Honda H4118H38A and H4120H48A lawn tractors share an identical hydrostatic transmission fluid capacity of 3.4 liters, which reflects a full system fill volume for a hydrostatic drive unit rather than a partial service top-up.
  • Both configurations carry a change interval of 60 months or 500 hours under normal use conditions, meaning whichever threshold is reached first would govern when a fluid change is due.
  • The 500-hour mark on a residential lawn tractor represents a substantial cumulative operating figure, placing the interval well beyond what most seasonal users would encounter within a single calendar year.
  • The 60-month interval runs parallel to the 500-hour limit, making calendar time the more likely governing factor for owners who do not log high annual operating hours.
  • The H4118H38A serial range opens at 1000001, while the H4120H48A opens at 6000001, yet both share the same 3.4-liter capacity and 60-month/500-hour service interval across their respective production ranges.

Other Systems