John Deere Full size front mower

Differential fluid capacity & service interval

John Deere Full size front mower uses Differential fluid with a capacity of 4,7 liters. Service intervals include checking at 50 hours and changing at 600 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)
  • Rear
  • Use: Normal
  • Capacity 4,7 liter
  • Check 50 hours
  • Change 600 hours
  • Code: (4x4)
  • 1425 PIN (010001-) (2000-2005)
  • Rear
  • Use: Normal
  • Capacity 4,7 liter
  • Check 50 hours
  • Change 600 hours
  • 1435 PIN (010001-) (2000-2005)
  • Rear
  • Use: Normal
  • Capacity 4,7 liter
  • Check 50 hours
  • Change 600 hours
  • 1445 PIN (010001-) (2000-2005)
  • Rear
  • Use: Normal
  • Capacity 4,7 liter
  • Check 50 hours
  • Change 600 hours

Additional Notes

  • The rear differential on the John Deere 1420 (PIN 010001-, 2002-2005) carries a fluid capacity of 4.7 liters, which reflects a full service fill volume for the differential housing.
  • The 1425, 1435, and 1445 models (PIN 010001-, 2000-2005) share the same 4.7-liter rear differential capacity as the 1420, indicating a common differential assembly across the lineup.
  • All four models specify a fluid level check interval of every 50 hours under normal use conditions, a relatively frequent inspection cycle consistent with working equipment subject to regular load.
  • The fluid change interval across all listed models is set at 600 hours under normal use conditions, representing a long-duration service cycle that reflects the sealed, low-contamination nature of a rear differential in this application.
  • The gap between the 50-hour check interval and the 600-hour change interval on all four models means fluid level monitoring occurs twelve times before a full drain-and-fill service is due under normal use conditions.

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