If it is 2004... and not rebuilt, it should be broken in already....just in case you had a typo and meant 2014 and its new or it has been rebuilt .....see below
Many Yamaha 4 stroke
engines have an "over revolution" system that prevents damage to the engine
by preventing it from exceeding the safe WOT speed.....you'd have to call Yamaha to verify your model has that......most 4 cycle do
1st Hour Operate the engine
at varying speeds up to 2000 rpms or approximately 1/2 throttle.
2nd Hour Increase the engine speed until the boat is on plane (but avoid full throttle operaton) and then back off on the throttle while keeping the boat at a planing speed.
Next 8 HoursRun the engine at any speed however avoid operating at full throttle for more than 5 minutes at a time.
After the 1st 10 HoursOperate the engine normally.