Re: Trimming motor
On I\Os there is trim and trailer. Trailer allows you to raise the motor all the way up, whereas trim only adjusts the motor within a smaller range. On outboards, there is usually only trailer (it does both jobs).
On the trailer, the motor should be all the way up (using the up-trailer switch), supported by a bracket or "transom saver" (you lower it slightly (using the down-trim switch) to contact the retention device and the device takes the load off the trailer while traveling.
When you launch, do so with the motor all the way up (raise it slightly to remove the transom saver).
When you begin your startup procedures, lower the motor all the way down (you'll hear the trim pump change tone). Raise it a bit (maybe one or two seconds, it depends). Start motor.
As you pull away and get up on plane, adjust the trim as noted by soundman above. It can be a little different or each boat, and will vary based on number of passengers, loading of cargo, wind & waves, etc.
We usually adjust using the "start porpoising and lower it a bit" method, but you can also hear the engine increase slightly in RPM (and maybe boat speed) when it's trimmed right.
Or have someone show you.
