[Mcfall]

Recently purchased, it ran fine but was leaking gas from carb when it set. I got into the habit of turning off the gas when I was done.

I'm not smart enough to leave well enough alone and rebuilt/cleaned carb. While it was off, I replaced the coil and condenser.

Now when used for a prolonged period, the engine won't shut off when the key is turned to the off position. I turned the gas off and it'll eventually stop.

Any ideas on what could cause this?

Thanks