Honda BF115A, BF130A Outboard Motors Shop Manual., Page 142Get this manual

5SILENCER CASE aREMOVALINSTALLATION
Remove the engine cover and disconnect the TP sensor connector
SILENCER GROMMET
INSTALLATION: Push the grommet onto the silencer case securely until the stepped part inside the grommet comes in contact with the silencer case end as shown131-2 SILENCER GROMMET [31-1

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