Iseki SG

Coolant capacity & service interval

Iseki SG models require coolant with a capacity range of 3 to 3,4 liters. Maintenance requirements include a 10 hour check interval and a 400 hour change interval. The data covers 4 configurations.

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

TypeSpecifications
SG15 (1997- )
  • Use: Normal
  • Capacity 3 liter
  • Check 10 hours
  • Change 400 hours
SG153 (1997- )
  • Use: Normal
  • Capacity 3 liter
  • Check 10 hours
  • Change 400 hours
SG17 (1997- )
  • Use: Normal
  • Capacity 3,4 liter
  • Check 10 hours
  • Change 400 hours
SG173H/SG173H-U (1997- )
  • Use: Normal
  • Capacity 3,4 liter
  • Check 10 hours
  • Change 400 hours

Additional Notes

  • The Iseki SG15 and SG153 share a cooling system capacity of 3 liters, while the SG17 and SG173H/SG173H-U require 3.4 liters, reflecting the slightly larger engine displacement in the latter two models.
  • A 10-hour check interval applies across all four SG series configurations, indicating that coolant level inspection is among the most frequent routine maintenance tasks in the service schedule.
  • All four configurations specify a coolant change interval of 400 hours under normal use conditions, placing full coolant replacement well into long-term service rather than early maintenance cycles.
  • The 0.4-liter difference in cooling system capacity between the SG15/SG153 group and the SG17/SG173H/SG173H-U group suggests a meaningful difference in engine size and heat rejection requirements between the two sub-groups within the SG range.
  • The SG173H and SG173H-U share identical cooling system specifications, including the 3.4-liter capacity and both the 10-hour check and 400-hour change intervals, indicating no service differentiation between the standard and U-suffix variants.