Yamaha F4B outboard motor ticking issue.

[Tony_z]

I have this little motor for over 4 year been a lovely toy. However, it recently develop this kicking issue with a clicking sound. It happens in any gear. please see the linked video for reference. Can any expert give me some tips.
https://youtu.be/9965cBRe6yk
Thank you in advance.
Tony

 

[raczekp1]

its from gearbox or powerhead