John Deere Full size front mower

Automatic transmission fluid capacity & service interval

John Deere Full size front mower uses automatic transmission fluid with a capacity range of 8,5 to 8,7 liters. Service intervals include checking at 10 hours and 50 hours, and changing at 400 hours. The data covers 4 configurations.

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

TypeSpecifications
  • 1420 PIN (010001-) (2002-2005)
  • Hydrostatic
  • Use: Normal
  • Capacity 8,5-8,7 liter
  • Check 10 hours
  • Change 400 hours
  • 1425 PIN (010001-) (2000-2005)
  • Hydrostatic
  • Use: Normal
  • Capacity 8,7 liter
  • Check 50 hours
  • Change 400 hours
  • 1435 PIN (010001-) (2000-2005)
  • Hydrostatic
  • Use: Normal
  • Capacity 8,7 liter
  • Check 50 hours
  • Change 400 hours
  • 1445 PIN (010001-) (2000-2005)
  • Hydrostatic
  • Use: Normal
  • Capacity 8,7 liter
  • Check 50 hours
  • Change 400 hours

Additional Notes

  • The 1420 (PIN 010001-) carries a hydrostatic transmission fluid capacity listed as a range of 8.5 to 8.7 liters, which reflects an acceptable fill window rather than a single fixed volume.
  • The 1425, 1435, and 1445 (PIN 010001-) each share an identical hydrostatic transmission fluid capacity of 8.7 liters, placing all three at the upper boundary of the range seen across the 2000-2005 lineup.
  • The 1420 has a fluid check interval of 10 hours under normal use conditions, which is notably shorter than the 50-hour check interval specified for the 1425, 1435, and 1445 under the same normal use conditions.
  • All four models share a 400-hour fluid change interval under normal use conditions, meaning the hydrostatic transmission fluid is replaced at the same mileage-equivalent threshold regardless of model.
  • The John Deere Full Size Front Mower 1420 carries a 2002-2005 production window within the broader 2000-2005 dataset, making the 1420 the only model in the group without coverage for the 2000-2001 period.

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