It makes it exactly what Davie said right at the start, 1992. My bad! It looked like a C or G on my crappy iPad zoom, if that's not enough to convince me I need the iPad3 I don't know what is
The L denotes the shaft length, in this case Long. Obviously an S there instead would mean its short shaft.
Yams use the age identifier below. Works with "Yam" built Mariner engines of the same period too
As you see it starts in 1993 on an "A" then goes forward and back in alphabetical order, with some letters missing so as not to confuse with "E" electric start, "L" long shaft etc.
Can still be a little confusing as some letters are used more than once so common sense is needed to make sure somebody does not pass off a 25 yr old as 9 year old etc.
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