I love my Toro 20332 – Recycler lawn mower. It creates its own mulch as I go along. Good for my yard since I get a lot of pine needles and oak leaves. And twigs, that I just run right over.  My pal Denise has the same mower. She showed me how to change the filter the other day.  It really needed it after 2 years.  It stopped self propelling a couple of months ago. I drained the gas out into a pan and tipped the mower over and checked the front drive underneath. I had a mile of grapevine tangled around the drive rod, so I cut it off then I was good to go.  9-28-17 Update, cleared drive rod again but self propeller still didn’t work. I’ll take it in to be checked and report back. This mower is 10 years old!