[docjr03]

I've got a 2003 225 hp Mercury 4 stroke (black yamaha with a mercury sticker). is there a way to check the motor for how many hours are on it?

 

[rj]

Yes there is a memory chip in the motor that contains data like total hrs, highest rpm's,highest operating temp, etc, your merc dealer can read the chip.

 

[docjr03]

thanks for the reply, rj. i figured as much

 

[mercurytech]

Actually they can only read the hours if the dealer has the new cds software. There isn't a port to connect the old ddt. Basically now trouble shooting the 225 four stroke consist of hooking up a light to the test port and counting the flashes. If your local merc dealer doesn't have CDS call a yamaha dealer.