90 yamaha

[Phil Coetzee]

Hi new at this I have got a 90 Yamaha, on the serial plate,
90AETO
6HI UL 854921
Does this tell the year and how can I get a correct wiring diagram for the instruments,ie- rev counter power trim
regards Phil

[rodbolt17]

that model is an international model number.
doesnt do anything for those of us in the US.
I cant help ya much with what your asking.

[99yam40]

possible it is a 1983 model

Yamaha Model Guide

[Phil Coetzee]

90 Yamaha

Thanks only other thing I forgot to mention is that it is a 2 stroke 3 cyilnder with power trim and electric start is there any thing else that can norrow it down or where else can I look ,
thanks Phil

[axolotl98]

Have a closer look at your spark plug wires. You might find their production date printed on them if you are lucky and if the previous owner did not replace them for the very same reason...

[JARB]

1994

That serail indicates it is a 1994. Production started at 854690 and stopped at 855021 for that model in 1994.

[rodbolt17]

international model designators BETO and AETO were not used in the US market with the exception of a very few v4 and v6 motors from 84-85.
the US market gets no other information on the AETO and BETO model designations.

[JARB]

According to the same document that I found that this is a 1994 motor, it also states that this engine was not sold in Europe, USA or Canada. It was sold in Oceania, Japan and some part of the world that yamaha call other

[Phil Coetzee]

90 yamaha

Thanks for the info surely the wiring to the instrements would not be to dissimular, may be the wire colours might be different, but I could trace out each wire if I had a drawing to follow.Has anyone got or where could I look to find one,
regards Phil

[Herman Melville]

Hi Phil sorry to revive an old post but did you find any solution?

I have a 90AETO and am wondering the same things as you

[99yam40]

old Phil has not been back since 2011