AJ,
If you can get it home for little cash out of pocket, go for it. Fuel injected engines don't varnish as badly as carburetors do because the fuel system has no exposure to air. The generator will need the carburetor cleaned, that is a given.
The remark above about replacing all the rubber parts is optimistic. The good thing is that replacing all the hoses and flushing the coolant and brake system is a DIY job that is usually less than 1K$us out of pocket. Tires are toast, plan on that.
I have mentored three of these programs and two were complete successes the third was only not because the owner was not willing to tear a wall open.
Matt