How about leving it plugged into the cord? Beats a repair job.

Did the plug feel hot, by any chance?

Nope. And I didn't see any evidence of burning/blackening on the plug or the extension cord. Both are nearly new, too. Just bought mower and cord in June, so any kind of damage would be easy to see, since there's little gunk or dirt to conceal anything.

Joe S

I like Jacks idea - why unplug it?

- why unplug it?

So he can plug in his Weed Whacker?

....and my blower, too. And if it's stuck, that means something is weird, and having something electrical not be quite right doesn't leave me with a warm and fuzzy feeling. Or worse, if I left it and didn't get fix it somehow maybe someday I would have a very unpleasant warm and fuzzy feeling when the thing decides to electrocute me. :o
Slow drips, drafty windows and creaky floors are things I can leave alone. Wonky electrical cords are another matter.

Joe S.

So is the plug pin still stuck in the extension cord? It sounds like that's what you're saying.

Yes, that's exactly what's happening. One pin is stuck. The other is not.

"having something electrical not be quite right doesn't leave me with a warm and fuzzy feeling"

Words to live by! If only everyone out there were so careful!

Sometimes the prongs on cords that get left outside get corroded. I'd give it one last honest tug (making sure its unpulged first, and tugging from the cord cap, not the cord itself). If it doesn't budge (or breaks, for that matter) you'll probably have to take it to a repair shop to get a new cord attached. What brand is it? I'm pretty sure Sears services their Craftsman lawn equipment... maybe they do other brands as well. Or you could check the yellow pages for lawn equipment repair.
Good Luck!

My guess is that the spring clip inside the extension cord's receptacle got damaged. THough I've never had one hang on to a pin, I've had some that refused to admit a plug without a struggle. Happens more often on the cheapies (which I no longer buy, partly for that reason).

Especially if it's a cheapie cord, you might try surgery on the receptacle end, using a mat knife or something similar (I'm assuming the recept is molded plastic). Then junk the cord end and replace it with a good one from the hardware store, which will probably outlast even a new molded cord.

I've had the situation where the connection was poor, there was some arcing, and the hot side prong welded to the hot side of the receptacle. The whole outlet came apart when I jerked on the cord. (I wasn't aware of the arcing until I inspected the remnants.)

the hot side prong welded to the hot side of the receptacle.

That's what I was thinking at first, but he said no heat was involved. Maybe it had cooled by the time he looked at it?

I am having this problem now. I ran over the cord so need to remove it but can't, and can't pull out for the life of me. I don't want to destroy the mower by taking it apart. Is there some sort of clip that is holidn it in?

One thing that annoys me about electric garden appliances is that they have 2-prong plugs, but you can't get extension cords with 3-prong receptacles. If you're having trouble with the plug on the end of the mower's cord, just remove it and install a 3-prong (grounded) plug, which will stay attached to the extension cord more securely. Now, if you're talking about the male plug on the appliance itself, then my suggestion won't work!