Re: Getting hours from electronic ignition
I have a 2002 Mercruiser 4.3 220hp I/O. There is no hour meter on the boat which seems odd to me. I thought I heard somewhere that somewhere in the electronics of the engine control, the hours are recorded. Has anyone heard of this? Is there a way to extract the hour information from the engine control?
You would need to either buy a scan tool like what is in this link And also the adapter kit to make it work, Or next time you have the boat in for service see if they have the tools to look it over for you.

http://www.rinda.com/marine/marine.htm
Scan Tool Adapter Kit
Used in conjunction with the Mercruiser Scan Tool or Diacom Marine software, this adapter kit contains all the adapters needed for connection to the different modules supported by the Scan Tool and Diacom Software. Included in the kit are: Thunderbolt V (1) adapter, 2.8L 4.3L 7.3L D-Tronic Diesel (2) and Mercury Outboard (2) High Performance adapters.
Download Information & Pricing
Request Information via US Mail
Part #94035
1996-Up MerCruiser Thunderbolt V
Ignition module support
The scan tool supports 1996-up MerCruiser Thunderbolt V
ignition modules. Technicians can access engine operating
hour data from the module and review the number of hours
an engine has operated in several preset RPM ranges.
http://www.rinda.com/marine/mtspec.htm