2003 F50 Yamaha

[Phil Nowack]

I can't find in the manual where it discusses warnings that are in the form of vibration or shakes.

This morning, at 3/4+/- throttle... it started shaking.. Initially ( since it was in the dark) I thought it was wild celery beds that were fouling the prop... I put in reverse to get, the imagined weeds off the prop, and took off like normal for another mile, give or take. When it happened on my way back in, I tilted the motor up, and it was clean. I was about a 1000 yards from the landing, so I ran it back in half throttle with the expected performance. This is a tiller unit, with no tach. No whistles or sirens went off..

It was peeing.

 

[roy brewington]

Is prop bent, It doesn,t take a lot of bend on edges to get vibrations. Or is prop shaft bent, fishing line wrapped around prop shaft near seals will have similar effect.

 

[Phil Nowack]

Nope, nothing bent.... AND I was able to run at the same speed/rpm after the shaking.....

 

[Chris Hughes]

Is it possible the prop hub is slipping?

 

[Phil Nowack]

Possible I suppose

 

[Paul Taylor]

prop hub slipping would just feel like it's blowing out not vibrate.

Check lower unit oil and magnetic end of drain plug for metal shavings. I hope that's not it tho!

 

[Huntindave McCann]

Did it vibrate today? If not it may have been weed(s) that dislodged and went un-noticed when you slowed down, before you raised the motor to inspect.

 

[Phil Nowack]

I did not go out today... Otter is close to being ready, but not quite.. I am afraid, Kodi's days in the field are done. He had a LarPar/breathing attack yesterday. I wasn't sure he would be with us today. Finishing the layout today.