Help With Engine ID

[boscoe99]

http://yamahamc.partsandwarranty.com/SyndicateNav.cfm

Sorry try this one. If you enter the 300116 in the second search field from PID it brings up what I referenced.

That won't work. Reason being that the serial number is just one part of the complete engine ID.

There may be numerous models with the same serial number of 300116. For instance, 63PX 300116, 69JX 300116, 6G5L 300116. The prefix to the serial number is changed so as to denote a specific engine.

[Jason2tpa]

Have your friend look at the carburetors and the starter motor for any markings. What are they?

And are there six individual carburetors or three sets of dual carburetors?

6 individual carbs

[boscoe99]

Take a look at these models that use the carburetor solenoid valve.

61A-86120-00-00 YAMAHA SOLENOID VALVE ASY

Also, see if your friends model has an electric fuel pump mounted below the carburetors.

I suspect this may be what is known as a V76X model:

[Jason2tpa]

Thanks for the info guys

[rodbolt17]

it definatly has 3 2bbl carbs.
it is most definatly NOT a 3.1L.
however I have never seen a 90-93 225 with the a&b solinoids nor ever rebuilt the prime start pump.