Re: mercury 150 serial number doesn't exist
I also have a 150 Optimax, vintage 2006 that I bought new/used from a dealer. Reason I say new/used, it was supposedly used by Mercury as a "classroom trainer"...i.e., taken apart then reassembled. The dealer put the normal warranty (3yrs) on it but I decide one day to register it on line...surprise, same as you experienced, "no record" of this s/n. I called the dealer and he said he didn't know the reason but that the warranty is in force and he will honor it. Well, since I know the dealer as reputable, I did not pursue it further. The motor is designated "Pacemaker" on the Bill of Sale.