Hours Display - 6Y5 Multi Function Tach 2013 90HP

[CBSNLBoater]

I just installed a 6Y5 Tach Multi-Guage on my 2013 90hp Yamaha with 703 Controls. The install was very easy, however, I have one question.

Should the total hours automatically update once installation is complete? Or will I have to go to a dealer to get a reading from them? I only started the motor for a few minutes with the muffs on to check the tach

[99yam40]

new tach will only read the hours the motor has run since the motor has run since the tach was installed

[CBSNLBoater]

K Thanks so much. II'll have to drop in to a dealer to get them to tell me the total hours for me to make a note of.

[fairdeal]

If you had installed a 6Y8 tach
(which would also require some new wiring between engine and tach)
it would display the actual engine hours

[boscoe99]

To be somewhat quirky, it should be noted that:

A 6Y5 tachometer records and displays tachometer hours. It is all done within the tachometer only. Move a 6Y5 tachometer from one motor to another motor and the hours logged on the tachometer will remain the same.

A 6Y8 tachometer displays engine run time that is recorded within an Engine Control Unit. What is seen on the tachometer is not always reality. Replace an Engine Control Unit on a motor that has lots of run time, say 500 hours, with a new ECU, and the 6Y8 tachometer will display 0 run time. Conversely, install a used ECU that has lots of run time, on a motor that has less run time, and the tachometer will indicate more hours than are really on the motor.

[CBSNLBoater]

Thanks for your time and responses. Much appreciated.....be safe.