Issue with Honda BF5A outboard

[lawrence_craig]

I have an issue with a Honda BF5A outboard where one moment it will run fine, then run rough for a period of time, then run fine. When running rough, the exhaust also smells rough.

I have removed the carb and cleaned it.

I have linked a video of the issue here: https://youtube.com/shorts/N53AIJDidQo?feature=share.

Any suggestions on what/where to look at?

Thanks.

[GordMay]

FWIW:
Honda ‘BF5' Service Manual ➥ https://static1.squarespace.com/stat...ice+Manual.pdf
or ➥ https://www.scribd.com/document/6406...Service-Manual