I will look at the back of the tach and see if it is wired correctly. I have an aftermarket generic prop with no markings. I am not sure on what prop to use, I go long distances often with just two poeple on board and light gear. Any suggestions on prop size?
My 22 c dory does about 3500rpms full throttle. the gps says around 23kts, does this seem normal. The honda manual says the motor should redline between 5 to 6k?