Where in Canada is the boat?

If it's with in an hour or two from me I don't mind making the drive on your behalf.

look at RPM run times and then add all up

PCM could have been changed out even from 496 MAG to a 496 HO MAG not uncommon or they needed a new / used one however. Hence from a lower hour PCM

Also top dress cover on the engine changed as well to show HO MAG. You can verify all this by engine serial number. Located down at the starter and or on the original title depending on State titling / paperwork

Get all serial numbers - engine - drive and transom assembly and have a dealer run them and or Merc also all stickers on the PCM and or other stamping on the PCM. Merc can tell you MANU date and cal.

that would be awesome,i sent you pm

Nope,,ECU only records hours while there is a crank/rpm signal present,

Your pm box is full.

I am 6 hours away unfortunately.

That boat is most likely salt water used though just so you are aware.

thank you (sellers comment,Alway in fresh water, never touch salt water)

The St. Lawerence is brackish/salt water until the locks at Montreal. He is on the ocean side of the locks. Unless it's a smaller boat and lake driven..... My experience with that area is salts and poorly if ever flushed.

thanks again

ECM and PCM scan will only show hours of total run time and then break it down into the RPM's run times. It will NOT log hours / time from key on no engine running.

there is the answer
thank you