After 4 long months of waiting, I got my SX180 w/90 out for break in. Once I was allowed to give it full throttle I couldn't get it to tach more that 4800 and I had 39 on the GPS. That was at full trim also. I would think I should be maxing out at around 5300 and around 45mph. What could be the problem. Not my 1st boat but the 1st one that didn't hit its max RPM from the start. It has a stainless 19" prop. Thanks.
Todd