Yamaha BW's 100 / 125

Brake fluid capacity & service interval

Yamaha BW's 100 / 125 uses brake fluid with a capacity range between min and max. Service intervals include checks at 1000 km, 3000 km, and 6000 km, with a change interval of 24 months. The data covers 4 configurations.

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

TypeSpecifications
BW's 125, YW125B (2010- )
  • Use: Normal
  • Between min and max.
  • Check 3000 km
  • Change 24 months
BW's 125, YW125B (2010- )
  • Use: Initial service
  • Between min and max.
  • Check 1000 km
BW's 100, YW100E (2005-2008)
  • Use: Normal
  • Between min and max.
  • Check 6000 km
  • Change 24 months
BW's 100, YW100E (2005-2008)
  • Use: Initial service
  • Between min and max.
  • Check 1000 km

Additional Notes

  • The Yamaha BW's 100 (YW100E) and BW's 125 (YW125B) both specify brake fluid level as "between min and max" rather than a fixed volume, which is standard for hydraulic brake reservoir maintenance where topping up to a marked range is the service method rather than a measured refill.
  • For the BW's 100 (YW100E, 2005-2008), the normal-use inspection interval for the hydraulic brake system is set at every 6000 km, while the BW's 125 (YW125B, 2010- ) carries a tighter normal-use check interval of every 3000 km.
  • Both the BW's 100 and BW's 125 share an initial service brake fluid check at 1000 km, applied regardless of displacement, indicating a common break-in inspection point across the two variants.
  • The 24-month fluid change interval applies under normal use to both the BW's 100 (2005-2008) and the BW's 125 (2010- ), meaning the replacement schedule is time-based rather than mileage-based for both configurations.
  • The initial service entries for both variants list only a 1000 km check interval with no associated fluid change interval, distinguishing the break-in inspection from the ongoing 24-month replacement cycle specified under normal use.

Other Systems