Yamaha s433 engine

[Swabbster]

I bought a old snowmobile a while back for 40$ and it is a gp396, the motor cervical number is s433, single carb, electric start, if you guys have any info on this motor let me know, if it is a string motor I may put dual carbs on it

 

[machinist@large]

cervical #?????

 

[Doc Sprocket]

cervical #?????

Sure. You gotta track these sorts of things...

...This is precisely why I turn off auto correct on all my devices. I may make the odd typo here and there, but at least I don't find myself calling a gynecologist for engine information...