What three books would you buy for small engine repair?

OK, strange question but, I've got a $60 gift card from Amazon and I was thinking I'd like to have some updated small engine repair manuals to keep in my mobile repair van.



I've got some pretty old manuals and that's great but, they don't cover the newer (last 10-15 years) of small engines.



If you could pick 3 or 4 of your favorites, it would be a great help to me and possibly to others looking for ideas.



Also, some are available on the Kindle version (I have an original Kindle so that's doable) and I could probably get a few more that way.



Any ideas are greatly appreciated.



I've pretty much talked myself out of the Foley Belsaw course as I was reading on another site that was talking about the locksmithing course (long night surfing and following strange links) and they were pretty much trashing it. That's when I got the idea of ordering some manuals from Amazon.



Of the older manuals I have, I really haven't had to refer to them at all lately as I don't generally run across older equipment like that and the pieces of equipment that I have run across that are that old have been easy repairs because of how well the were built..



Thanks for the help in advance.