What kind of mower do you have? Rider or push
push. one thing is i've only tipped it on it's back once before and like the engine flooded with gas or something and wouldn't start for a day or two when i did that. so i guess i should wait till it runs dry before trying to unscrew the blade?
is it ok to turn your mower upside down? Or do just have to just tip it?
Most push mowers are made that you tip up the front. If you do that and put something heavy like a rock or sandback on the handle while its no the ground, you can work on the bottom of the mower; sharpen/change blades or scrape out the stuck on grass.
Also, probably the #1 tip for keeping your mower running well and for a long time is to regularly clean or replace the air filter.
sys it is also advisable to disconnect the spark plug wire when removing or replacing the blade
I get this and I'm all for being safe, but I've never read or heard about a mower spontaneously starting and cutting someone's hand off.
Finally, using the auto entrance/exit to go in and check out at Walmart is often advisable.