no speedometer-- tach running 4300rpm wide open

[runner]

have a 4.3 mercruiser speedometer does not work. wide open tach says 4300-4400rpm is this the normal speed for this type of engine?

 

[cajun1962]

Re: no speedometer-- tach running 4300rpm wide open

NO!!
you should be running 6000 RPM , you will burn it , Change your prop