I'm embarrassed to admit that I didn't do right by my lawn mower last
Fall and just left it in the garage over the winter without doing any
winter prep. It's warm enough today that I thought I'd drag it out and
see if I could start it, and I couldn't after priming the engine and a
few quick on the rope. What should I do at this point? The lawn mower
is a Murray with a 4-stroke engine (model 20617A for those that care).
I bought it used and didn't get a manual or anything like that with it.

As a follow up, what's the right way to put this machine away for the
winter?

Thanks in advance,
-Lotofun