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Old 21 October 2004, 05:35   #1
Country: UK - England
Town: I.O.W/Bristol
Boat name: HotShot
Make: shakey
Length: 5m +
Engine: 70hp Tohatsu
Join Date: Jul 2003
Posts: 1,543
Identifying the age of an engine

How do you find out how old an engine is (other than asking whoever is selling it!). I've read somewhere (on here I think) that the last two digits of a serial number is the year of manufacture.

I need to find out how old a 70hp tohatsu is. Where will I find the serial number? What else can I determine from the serial number?

Any help/advice greatly received.



slimtim is offline   Reply With Quote
Old 21 October 2004, 06:24   #2
Country: Sweden
Town: Gothenburg
Boat name: Greau
Make: RING Powercraft
Length: 10m +
Engine: 2 x Yanmar
Join Date: Sep 2004
Posts: 9

you can dowload an online manual at and see when itsīs printed. the only thing you hav to know is wich type it is. a,b or c.


staffan is offline   Reply With Quote
Old 21 October 2004, 07:16   #3
Country: Sweden
Town: Stockholm
Boat name: Osprey & Ring
Make: Osprey & Ring
Length: 9m +
Engine: Plenty
Join Date: Mar 2003
Posts: 860
You can se it as you say on the serial number, but i am not sure that all engines has the 2 last digits.
Thats the year of build but i think not sure, that the year of engine is the year after what the digits say.
Petrov is offline   Reply With Quote
Old 21 October 2004, 07:27   #4
Nick Hearne's Avatar
Country: UK - England
Town: Bucks
Boat name: Blue & Ding Dong
Make: Ribeye,SR4 & Bombard
Length: 6m +
Engine: 115,50 & 15Hp Yams
Join Date: Feb 2004
Posts: 3,232
Hi i know its not tohatsu but this is how to tell the year for a OMC!
I found this on google a few years ago! you could always try Andy Clark at I'm shore he could tell you.

Johnson/Evinrude outboards from 1981 forward uses a two letter code derived from the
word Introduces to establish the model year. See matrix below.

1 2 3 4 5 6 7 8 9 0

Example: 1998 Evinrude 115 = E115TLECS the EC represents 98 or 1998.
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