I picked up a free mower on craigslist, mostly just for the motor. I'm checking the oil and stuff, getting ready to fire it up, and I can't figure out what this dipstick on the right is for, or even how to get it out for that matter.

So I look at the top, and what is supposed to be a universal symbol of some kind isn't telling me much. I've tried to twist it, push it, pull it, and nothing happens. I don't want to break it. I'm sure there's an obvious answer, but I'm just not seeing it.

Any thoughts appreciated

So I look at the top, and what is supposed to be a universal symbol of some kind isn't telling me much. I've tried to twist it, push it, pull it, and nothing happens. I don't want to break it. I'm sure there's an obvious answer, but I'm just not seeing it.

Any thoughts appreciated