It appear my tachometer may not be reading correctly on my dash. I have a Honda V-Tech 150 model #BANJ-1403002. How can I plug into the engine at speed to see if my tachometer is correct on my dash to confirm my RPM’s? Will HondaLink Marine work on this old of an engine? If not, is there another way? Thanks in advance.

 

Scan tool.

 

What scan tool are your referring to?

 

Any that can read the datastream.