Here are more tools to add to the list.
The new valve spring compressor just arrived via UPS today. I think that it might be easier to use than the previously pictured valve spring compressor. I'll let you know after I use it for the first time.
Battery Load Tester
(just because a battery reads 12V, does not mean that it works well under load, this will help)
Valve Spring Compressor
(I just got it delivered today - looking forward to using it)
(Dewalt 18V XRP)
Cordless impact driver
(Milwaukee M12 - 2450-22)
As an avid DIYer, the drill/driver and this impact driver come in handy for much more than small engine repair.
There are many different sizes available and they aren't cheap. I bought this one for a specific job - I hope that I get the chance to use this size again.
This is a must for any DIYer. I like the digital read out on this one.
KEEP THE INSTRUCTION MANUAL THAT COMES WITH IT, YOU WILL PROBABLY NEED IT TO REMIND YOU HOW TO USE EACH FUNCTION!