Kubota G/GR

Automatic transmission fluid capacity & service interval

Kubota G/GR models utilize automatic transmission fluid with a capacity range of 2,7 to 11 liters. Service intervals include checks at 25 and 50 hours, and fluid changes at 100, 200, 300, and 400 hours. The data covers 10 configurations.

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

TypeSpecifications
  • G26 HD (2012- )
  • Hydrostatic
  • Use: Normal
  • Capacity 11 liter
  • Change 400 hours
  • G26 LD (2012- )
  • Hydrostatic
  • Use: Normal
  • Capacity 11 liter
  • Change 400 hours
  • G18 (2001- )
  • Hydrostatic
  • Use: Normal
  • Capacity 4,5 liter
  • Check 50 hours
  • Change 300 hours
  • G4200 H, Kubota Z430
  • Hydrostatic
  • Use: Normal
  • Capacity 7 liter
  • Check 25 hours
  • Change 200 hours
  • Code: 1/1
  • G4200 H, Kubota Z430
  • Hydrostatic
  • Use: Initial service
  • Capacity 7 liter
  • Change 100 hours
  • Code: 1/1
  • G5200 H, Kubota D600
  • Hydrostatic
  • Use: Normal
  • Capacity 7 liter
  • Check 25 hours
  • Change 200 hours
  • Code: 1/1
  • G5200 H, Kubota D600
  • Hydrostatic
  • Use: Initial service
  • Capacity 7 liter
  • Change 100 hours
  • Code: 1/1
  • G6200 H, Kubota D640
  • Hydrostatic
  • Use: Normal
  • Capacity 7,5 liter
  • Check 25 hours
  • Change 200 hours
  • Code: 1/1
  • G6200 H, Kubota D640
  • Hydrostatic
  • Use: Initial service
  • Capacity 7,5 liter
  • Change 100 hours
  • Code: 1/1
  • GR1600EC2, Kubota Z482-E2-GX
  • Hydrostatic
  • Use: Normal
  • Capacity 2,7 liter
  • Change 200 hours

Additional Notes

  • The Kubota G26 HD and G26 LD share an 11-liter hydrostatic transmission capacity, the largest among the G/GR configurations listed. Both carry a 400-hour change interval, which is also the longest drain interval in the group.
  • The G4200 H and G5200 H both hold 7 liters of hydrostatic transmission fluid and share identical service schedules: a check at 25 hours and a change at 200 hours under normal use conditions.
  • The G6200 H paired with the Kubota D640 engine holds 7.5 liters, slightly more than the G4200 H and G5200 H. Like those models, a fluid level check is specified at 25 hours and a full change at 200 hours under normal conditions.
  • An initial service interval of 100 hours applies to the G4200 H, G5200 H, and G6200 H. Under normal ongoing use, the change interval extends to 200 hours. The earlier first change is a common practice in new or rebuilt equipment to flush metal particles and contaminants generated during break-in.
  • The GR1600EC2 with the Kubota Z482-E2-GX engine has the smallest hydrostatic transmission capacity in the group at 2.7 liters, reflecting the more compact design of the GR-series riding mower compared to the larger G-series machines.
  • The G18, introduced from 2001, carries a 4.5-liter hydrostatic transmission capacity with a fluid level check specified at 50 hours and a change at 300 hours. The 50-hour check interval is longer than the 25-hour check intervals assigned to the G4200 H, G5200 H, and G6200 H.
  • Across the G4200 H, G5200 H, and G6200 H, the capacity values of 7 and 7.5 liters are consistent with mid-range hydrostatic transmission systems in commercial-grade garden tractors, where fluid volume supports both lubrication and hydraulic power transfer functions within a shared sump.

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