Max rpm on a 1996 evenrude E150ELEDB

[Beaver]

As 76Red18 mentioned, it may be that your carb linkage is out of adjustment. You can check this really easily by removing the silencer from the outside of the carbs and with the motor not running push the throttle wide open. When you look inside the carbs are the plates open all the way and the same amount for each carb? If not you need to adjust the linkage. I think its called "syncing your carbs". I'm sure there are several youtube videos showing how to do it.