I don't think it would be a motor mount issue since their is no shuttering/vibration in any position except hard right. It is not felt at slow speeds (around dock) turned hard right, just at high speed right.
I read this warning from Mercury:
"The shift cable must be adjusted correctly so that the reverse gate does not interfere with water flow coming out of the rudder. If the reverse gate hangs down into the water flow, a vibration may be felt in the control box. If this occurs, reduce throttle immediately and readjust the cable. Improper adjustment may result in pump damage including loss of the reverse gate."
Any advise on adjusting shift cables?
Thanks
I actually adjusted the trust cable today. I noticed that the bucket was not resting with tension against the forward stop. There was significant slack in the cable.
What I did was remove the cotter pin holding the cable to the bucket, removed the stainless bracket covering the barrel adjuster and I turned the barrel and checked until it felt like I have slight tension at the front stop and smooth movement of shifter.
Hopefully this fixes my problem. Please advise me if I need to do anything else.
Thank you,
Brian