Honda BF115A, BF130A Outboard Motors Shop Manual., Page 178Get this manual
5) Release the air vent tube I3 from the hose clamp and disconnect the air vent tube from the mounting case
6Disconnect the 550 tube and the 690 tube from the engine undercaseDisconnect the 690 tube from the 3-way joint
[217 550 mm TUBE
7 690 mm TU 7) Disconnect the 550 tube from the 3-way jointDisconnectthe 4.5 50 mm tube from the grommet mounted on the engine undercase