90 hp mercury what year is it?

Question

s# on motor mount is 5996487 it is a 3 cylinder

Answer 1

90 HP is a six cylinder with 3 carburetors.

OK I did some searching. You may do best calling a Dealer and asking, here what I found;

Q. OK, I have the serial number. Where is the year?

A. It really is not important to know the year of your motor if you have the serial number. The serial number (combined with model or horsepower) should always be used to accurately order parts and manuals. Check our model listing page for a hyperlink to your model, where you will find serial number-to-year information. If your model is not yet listed or hyperlinked and you need to know the year, we can look it up for you when you call to place an order.
http://www.oldmercs.com/faq.html#year

This is for older motors and I doubt you will find your serial number listed. I just give this for information.

Answer 2

i ran the numbers everything i show is a six cylinder?
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