Honda BF35A-BF45A Outboard Motors Shop Manual., Page 141Get this manual
IMPELLER INSTALLATION: Check the impeller for wear or cracksInstall the impeller by turning it counterclockwise with the side where the groove reaches to the end toward up
[I] GROOVE
17 30 mrn WATER SEAL
REMOVALIINSTALLATION: Removeinstall the water seals using the special toolsTOOLS: Oil seal remover Handle Attachment, 28 30 mm