I seem to have stumbled on this thread because I am having the same problem (in all modes of operation on the boat and on an engine stand). I have a 2012 20hp Suzuki with less than 30hrs that I am having vibration issue with. My engine idles (800rpm) smooth as silk, then at about 1500rpms I...
I have an 04 Yam 15 2-stroke and would like to take the next steps to getting more power out of it. What are the next and least expensive ways to go about doing this?
