MBK Stunt

Automatic transmission fluid capacity & service interval

MBK Stunt uses automatic transmission fluid with a capacity of 110 CM3. Service intervals include checks at 6000 km and changes at 1000 km or 12000 km. The data covers 2 configurations.

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

TypeSpecifications
Stunt, YW50N (2005-2017)
  • Use: Normal
  • Capacity 110 CM3
  • Check 6000 km
  • Change 12000 km
Stunt, YW50N (2005-2017)
  • Use: Initial service
  • Capacity 110 CM3
  • Change 1000 km

Additional Notes

  • The MBK Stunt YW50N carries an automatic transmission fluid capacity of 110 CM3, a figure consistent with the compact gearbox architecture found in 50cc scooter drivetrains.
  • Under normal use conditions, a fluid check interval of 6000 km applies, with a full fluid change due at 12000 km.
  • An initial service change is specified at 1000 km, a notably shorter interval that addresses the early wear particles and fluid contamination typical of a new transmission's break-in period.
  • The 110 CM3 capacity figure remains consistent across both the normal and initial service entries for the YW50N, indicating no variation in fill volume between a routine service and the first change.
  • The initial service interval of 1000 km represents one-twelfth of the standard 12000 km change interval, reflecting how aggressively new mechanical components shed material during early operation.