Pulled the grate and ride plate to get a closer look at the impelller.

It appears I have nicked up the impeller with some stones as I found one lodged in the grate. I guess this could cause 2 -3 MPH drop in speed?

I was not able to locate in the TECH section HOW to replace the
impeller on the 250 Ultra. I understand it requires a special Kawasaki
insert tool. Where can I locate the tool to purchase and find instructions
to remove.

I would like to improve the speed. SHould I have the impeller repaired or purchase a new impeller. If there is a new impeller that improves speed
I would elect to go that route.

Those with some insight in this I appreciate your directions.